Bolthole Index

Inyo County, California

Building permits, zoning and land rules in Inyo County, California

23Index Score / 100
#55 of 58 in California

Unincorporated Inyo County, California requires building permits for commercial and residential construction, including new homes, mobile-home installations, accessory structures and tiny houses1. Inyo County Planning administers the county zoning ordinance, while Environmental Health separately permits and inspects residential septic systems23. An owner may perform personal building, mechanical, plumbing or electrical work, but must still comply with the permit and code rules4.

At a glance

Building permit
Required for commercial and residential construction in unincorporated Inyo County1
Zoning
County-administered; the parcel's district controls allowed uses, setbacks and lot standards25
Septic permits
Inyo County Environmental Health permits and inspects residential systems under the county LAMP3
RV living
Ordinary long-term occupancy remains unconfirmed; RV short-term rentals are prohibited, with a limited emergency route after a disaster67
Tiny home
A county building permit is required, but a complete county occupancy rule was not confirmed18
Owner-builder
Allowed to perform personal trade work, without exemption from permits or code compliance4
Water wells
A local permit is required before construction, modification or destruction9

Who to call

Building permits

Inyo County Public Works - Building & Safety

Building permits, plan review and inspections for unincorporated Inyo County

760-873-7857

[email protected]

301 W. Line St. Suite F, Bishop, CA 93514

Zoning

Inyo County Planning Department

Zoning, subdivision and environmental review for unincorporated Inyo County

760-878-0263

168 N. Edwards Street - Annex Building, Independence, CA 93526

Septic permits

Inyo County Environmental Health Department

Residential septic and water-well applications, permitting and inspections

760-878-0238

[email protected]

1360 N. Main St., Bishop, CA 93514

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Inyo County, California?

Yes. Unincorporated Inyo County requires a building permit for commercial and residential construction, including new construction, mobile-home installation, accessory structures, tiny houses, remodeling, utility setup, grading for new construction, electrical and plumbing work, solar, reroofing and demolition1. County Title 14 applies to buildings and structures in unincorporated territory and adopts the most recent California Title 24 standards, subject to local amendments and lawful exemptions10. A permit is only the start of the county process: permitted work must be inspected when complete or at specified construction stages, and remote locations may take longer to serve11. Do not rely on a parcel's rural appearance as evidence that permits are optional; send the project scope to Building & Safety before ordering a structure or beginning site work.

Who is the Inyo County building department, and how do you reach it?

Inyo County Public Works - Building & Safety is the permit, plan-review and inspection office for construction in the unincorporated county12. The office is at 301 W. Line St. Suite F, Bishop, CA 93514, and its phone number is 760-873-785712. Applicants may email permit applications to [email protected]1312. Land-use approval is a separate desk: the Inyo County Planning Department administers zoning, subdivision and environmental review and can be reached at 760-878-0263214. Residential septic and well applications go to Environmental Health through its online portal, not to Building & Safety15. Contacting all relevant offices early matters because zoning approval, wastewater feasibility and floodplain constraints can change what Building & Safety is able to approve.

Does Inyo County have zoning?

Yes. Inyo County Planning administers the county's zoning and subdivision ordinances, while incorporated-city rules may differ216. The zoning map includes named districts and areas identified as unzoned, so check the parcel rather than assuming one countywide standard5. An R-1 building site generally requires at least 5,800 square feet and 50 feet of average width, with 25-foot front, 20-foot rear and 5-foot side yards1718. R-1 dwellings are limited to 35 feet and 2.5 stories, while accessory buildings are limited to 20 feet19. The OS zone generally requires 40 acres and 50-foot yards2021. OS principal buildings are limited to 30 feet or 2.5 stories, with a taller exception for farm and ranch buildings22. Land division is regulated, and subdivision lot sizes follow the zoning ordinance23. Ask Planning to confirm the district, allowed use and overlays in writing.

How do septic permits work in Inyo County?

The Inyo County Environmental Health Department permits and inspects residential septic-system installations, with designs governed by the Uniform Plumbing Code and new systems governed by the county Local Agency Management Program3. New standard systems in existing developments require a lot of at least 15,000 square feet, while new developments may have no more than 2 dwellings per acre; an engineered alternative is required where a conventional system is unacceptable3. Submit septic applications through Environmental Health's online portal and contact the department at 760-878-0238 or [email protected]15. Only 9.1% of county soils are rated without severe limitations for a conventional drain field, so wastewater feasibility belongs near the beginning of due diligence, not after house plans are complete24. California also requires a local permit before a water well is constructed, modified or destroyed9.

Can you live in an RV or tiny home on your land in Inyo County?

Do not assume that owning rural land in Inyo County authorizes full-time RV occupancy; we could not confirm a general county rule allowing or prohibiting ordinary long-term occupancy on private land. An RV cannot be used as a short-term rental dwelling in Inyo County6. A resident whose primary home becomes uninhabitable in a qualifying disaster may use an approved RV or mobilehome as a temporary emergency dwelling, but installation requires a building permit and occupancy is limited to 18 months7. Ask Planning about the parcel and intended use before moving an RV onsite14. A tiny house requires a county building permit, but we could not confirm a complete county occupancy rule outside the accessory-dwelling context1. ADUs may be allowed where septic and well service can be provided, and separate utility connections can depend on the type and timing of the ADU25. Manufactured homes are not automatically allowed everywhere; in the C-5 zone, the confirmed routes are an employee dwelling tied to onsite commercial recreation or a conditional-use mobilehome park26.

Building a home in Inyo County: the steps, in order

  1. Ask Inyo County Planning to identify the parcel's zoning district, allowed residential use, setbacks, height limits and any subdivision issue52314.
  1. Check flood mapping before design; development in a special flood-hazard area requires a county development permit before work begins27.
  1. Have Environmental Health evaluate septic feasibility, including whether an engineered alternative is needed, and confirm the well-permit path if the site lacks water service39.
  1. For an ADU, confirm whether separate water, sewer, gas or electrical connections and associated charges apply25.
  1. Submit plans and the building-permit application to Building & Safety by email1312.
  1. If acting as owner-builder, document which work you will personally perform; that route does not waive Title 14 or safety codes4.
  1. Arrange inspections at completion and at the stages specified by the county11.

What should you check before buying land in Inyo County?

Start with legal access, parcel boundaries, zoning and flood exposure. A driveway or other encroachment in a state-highway right-of-way requires a Caltrans encroachment permit, while work in an Inyo County road right-of-way has a minimum application fee of $50 plus any additional calculated fees2829. Water deserves equal attention because Inyo County averages about 6 inches of precipitation annually and has experienced severe drought in 44.8% of years3031. Confirm a lawful, reliable supply and obtain a septic feasibility opinion before closing; only 9.1% of county soils avoid a severe conventional-drain-field rating24. Federal land makes up about 94.3% of Inyo County, so verify that practical access does not depend on an undocumented route across public land32. Finally, budget for ownership: the effective property-tax rate is about 0.7%, and the median annual property-tax bill is about $2,3923334.

Watch-outs

  • The owner-builder provision lets an owner perform personal trade work, but it does not remove building-permit, inspection or code requirements4.
  • A tiny house requires a county building permit, but we could not confirm a complete Inyo County occupancy rule or a countywide minimum dwelling size; ask Planning and Building & Safety about the proposed structure and parcel11412.
  • An RV cannot be offered as a short-term rental, and the disaster-emergency dwelling allowance does not establish permission for ordinary long-term RV occupancy; ask Planning for a parcel-specific answer6714.

Sources

  1. Building and Safety, quoted and re-checked
  2. Planning Department, quoted and re-checked
  3. Residential Septic Systems | Inyo County California, quoted and re-checked
  4. Ordinance 1255 — Title 14 Building and Safety, quoted and re-checked
  5. Inyo County Zoning Ordinance, quoted and re-checked
  6. Chapter 18.73: Short-Term Rental of Residential Property, quoted and re-checked
  7. Chapter 18.83: Temporary Emergency Dwellings Following a Disaster, quoted and re-checked
  8. Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
  9. Well Standards (California statewide rule), quoted and re-checked
  10. Ordinance 1255, Title 14 Building and Safety, quoted and re-checked
  11. Inyo County Housing Element, quoted and re-checked
  12. Inyo County Public Works - Building & Safety (inyocounty.us)
  13. Building and Safety, quoted and re-checked
  14. Inyo County Planning Department (inyocounty.us)
  15. Inyo County Environmental Health Department (inyocounty.us)
  16. Planning Department, quoted and re-checked
  17. Chapter 18.30 R-1 Districts—One Family Residences, quoted and re-checked
  18. Chapter 18.30 R-1 Districts—One Family Residences, quoted and re-checked
  19. Chapter 18.30 R-1 Districts—One Family Residences, quoted and re-checked
  20. Chapter 18.12 OS (Open Space) Zone, quoted and re-checked
  21. Chapter 18.12 OS (Open Space) Zone, quoted and re-checked
  22. Chapter 18.12 OS (Open Space) Zone, quoted and re-checked
  23. Planning Department, quoted and re-checked
  24. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  25. Inyo County ADU Guide Book, quoted and re-checked
  26. Chapter 18.06: Definitions - Inyo County, CA, quoted and re-checked
  27. Chapter 14.28 Flood Damage Prevention Ordinance, quoted and re-checked
  28. Encroachment Permits | Caltrans (California statewide rule), quoted and re-checked
  29. Application for an Encroachment Permit, quoted and re-checked
  30. Annual precipitation: Bolthole Index county data
  31. Share of years in severe drought: Bolthole Index county data
  32. Federal land share: Bolthole Index county data
  33. Effective property tax rate: Bolthole Index county data
  34. Median property tax bill: Bolthole Index county data

Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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County locator

Inyo County in California

23
County map
Inyo County highlighted among the California counties · colored by Index score

How Inyo County scores

Seclusion81100% ev.
Self-Sufficiency10100% ev.
Admin Boringness41100% ev.
Durability12100% ev.
Property Autonomy56100% ev.
Carry Cost73100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$533kTypical home
0.7%Property tax
$961Land / acre
6"Annual rain
44.8% of yrsSevere drought
54.4 / yr (+20.3)Mid-century 100°F days
74.8 daysMid-century dry spell
0.95" (+7.4%)Mid-century 1-day rain
1.09×Wildfire change factor
100%Forward climate coverage
$1,213Home insurance / yr
3.4% / yrInsurance growth
1.35%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
3,133Radius comparison (15 mi)
1.8People / sq mi
94.3%Federal land
53.8%Land at 15% slope or less
9.1%Septic soil without severe limits
573,841 acWorkable land screen
3.9%Wooded land
11.9 tonsBiomass / forest ac
61.3°FAvg temp

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Answers from the rulebook for Inyo County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Inyo County rules

  • Building permitRequired

    Commercial and residential construction and the listed construction activities in unincorporated Inyo County.

    • Title 14 applies to buildings and structures in the unincorporated territory of Inyo County.
    • Buildings or structures exempted from compliance by the California Building Code, state law, or federal law are excepted.
    • The ordinance was adopted May 12, 2020 and states that it takes effect and is in full force and effect thirty days after adoption.
    • The county webpage lists examples requiring permits, including new construction, mobile-home installation, accessory structures, tiny houses, additions and alterations/remodels, electrical, plumbing, grading for new construction, solar, reroofing, demolition, and work changing the original footprint.
    “Examples of what requires a building permit: All Commercial and Residential Construction; New Construction; Mobile Home Installation; Guest House/Construct of an Accessory Structure; Tiny House; Additions and Alterations/Remodel”
  • Owner-builder exemptionConditional

    An owner performing their own building, mechanical, plumbing, or electrical work in unincorporated Inyo County.

    • The work must be performed in compliance with Title 14 and applicable building and safety codes.
    • This provision concerns the ability to perform the work personally; it does not exempt the project from otherwise applicable permit requirements.
    • Other California Building Code, state-law, or federal-law requirements may apply.
    “provided, however, that nothing in the codes adopted in this Chapter shall be construed to prevent any person from performing his own building, mechanical, plumbing, or electrical work when performed in compliance with this Chapter.”
  • Building code adoptedAdopted (with conditions)

    Buildings and structures in the unincorporated territory of Inyo County under County Code Title 14.

    • Title 14 applies to all buildings and structures in the unincorporated territory of Inyo County, except to the extent a building or structure is exempted from compliance by the California Building Code, state, or federal law.
    • All parts of the most recent California Code of Regulations, Title 24, are adopted subject to the modifications and amendments in Title 14.
    • The County adopted local modifications because of local climatic, geological, or topographical conditions, including snow loads, freezing temperatures, high winds, and remote mountain terrain.
    • Ordinance 1255 was passed and adopted on May 12, 2020 and states that it takes effect and is in full force and effect thirty days after adoption.
    • Permit fees are set by resolution of the Board of Supervisors and may not exceed the actual cost of the regulatory program.

    Title 24 adoption: all parts of the most recent California Code of Regulations, Title 24 (subject to the modifications and amendments contained in Title 14) · ordinance adoption date: 2020-05-12 (Ordinance 1255 states effectiveness begins thirty days after adoption)

    “All Parts of the most recent version of the California Code of Regulations, Title 24, are hereby adopted in the County of Inyo as a matter of state law, subject to the modifications and amendments contained in this Chapter.”
  • InspectionsRequired

    All work in unincorporated Inyo County for which a building permit is issued.

    • Inspection is required at completion or at specified stages of construction.
    • Remote areas of the county may take longer to receive an inspection.
    • The county Building and Safety Department performs enforcement at plan review and building/site inspection stages.
    “All work for which a building permit is issued must be inspected at the time of completion and/or at specified stages of construction.”
  • County-wide zoningPresent (with conditions)

    County-administered zoning under the Inyo County Zoning Ordinance and related county planning processes.

    • The Inyo County Planning Department administers the County's zoning ordinances.
    • Applicability to incorporated cities may differ because local land-use policies and regulations are adopted by the governing bodies of individual cities and counties.
    “We serve as staff to the Inyo County Planning Commission; administer the County's Zoning, Subdivision, Environmental Review, and Surface Mining Reclamation Ordinances, and provide information to the public.”
  • Local zoningVaries (with conditions)

    Aggregate local zoning across Inyo County, including county-administered zoning and zoning or land-use regulations adopted by incorporated cities within the county.

    • The County administers its County zoning ordinances.
    • The official county planning guide states that land-use decisions are delegated to city councils and boards of supervisors of individual cities and counties, and that local decision makers adopt their own land-use policies and regulations.
    • A parcel's applicable zoning authority depends on whether it is subject to county jurisdiction or an incorporated city's jurisdiction.
    “However, the State is seldom involved in local land use and development decisions; these have been delegated to the city councils and boards of supervisors of the individual cities and counties. Local decision makers adopt their own sets of land use policies and regulations based upon the state laws.”
  • Zoning districtsPublished

    County zoning districts and zoning-map boundaries in territory outside incorporated cities.

    • The ordinance identifies districts including unzoned areas, open space, agricultural, residential, commercial, industrial, precise-plan, planned-unit-development, public, and scenic-highway districts.
    • District boundaries are shown on the County of Inyo Zoning Map adopted by the County Supervisors.
    • The zoning map is on file with the County Clerk or Planning Commission.
    • If a district boundary is uncertain, the County Supervisors determine its location upon written application or on their own motion.
    • Uses, structures, and permits must comply with the regulations of the applicable district.
    “ZONING MAP. The Districts established an:1 the boundaries of such Districts are shown upon the map entitled "Zoning Map of the County of Inyo"”
  • Minimum lot sizeSpecified

    Building sites in the county R-1 one-family residence district.

    • The rule states 'Except as otherwise specified'; other Title 18 provisions may establish different minimums.

    minimum building-site area: >= 5800 square feet (Except as otherwise specified) · minimum average width: >= 50 feet (Except as otherwise specified)

    “Except as otherwise specified, every building site in an R-1 district shall have an area not less than five thousand eight hundred square feet and an average width not less than fifty feet.”
    One more reviewed finding on this topic
    • Specified — Parcels in the county OS Open Space zone.
      “Minimum parcel size, forty acres, except when a greater minimum area is established pursuant to Section 18.78.055;”
  • SetbacksSpecified

    Buildings in the county R-1 one-family residence district.

    • The front-yard rule is subject to exceptions in the general regulations.
    • Side-yard rules distinguish corner lots from interior side lot lines.

    front yard: 25 feet (Subject to exceptions set forth by the general regulations) · rear yard: 20 feet · street-side side yard: 5 feet (Along the street lot line of a corner lot) · interior side yard: 5 feet (Along an interior side lot line)

    “The minimum requirements for yards in R-1 districts shall be as follows: Depth of front yard, subject to the exceptions set forth by the general regulations, twenty-five feet; Depth of rear yard, twenty feet; Width of side yard along the street lot line of a corner lot, five feet; Width of side yard along interior side lot line, five feet.”
    One more reviewed finding on this topic
    • Specified — Buildings in the county OS Open Space zone.
      “The following are minimum standards established for development in the OS zone, except as otherwise provided in this title or as modified for conditional uses: Front yard, fifty feet; Rear yard, fifty feet; Side yard, fifty feet;”
  • Building heightSpecified

    Buildings in the county OS Open Space zone.

    • Farm or ranch buildings may reach sixty feet; other accessory buildings are limited to two stories or twenty-five feet.
    • Standards may be modified for conditional uses.

    maximum principal-building height: <= 30 feet (Or two and one-half stories) · maximum principal-building stories: <= 2.5 stories · maximum accessory-building height: <= 25 feet (Except sixty feet for farm buildings or ranch buildings) · maximum accessory-building stories: <= 2 stories

    “Maximum height of buildings: Principal buildings, two and one-half stories or thirty feet, Accessory buildings, two stories or twenty-five feet, except sixty feet for farm buildings or ranch buildings;”
    One more reviewed finding on this topic
    • Specified — Dwellings and accessory buildings in the county R-1 district.
      “No dwelling in an R district shall have more than two and one-half stories or a height in excess of thirty-five feet. No accessory building shall have a height in excess of twenty feet.”
  • Living in an RVTemporary only (with conditions)

    Use of a recreational vehicle as a temporary emergency dwelling by an Inyo County resident whose primary residence was rendered uninhabitable by a disaster.

    • The primary residence must have been rendered uninhabitable by a disaster.
    • A disaster generally means a natural catastrophe rendering two or more residences uninhabitable, or a small-scale accidental disaster such as a house fire destroying a single residence; resident-caused deterioration does not qualify.
    • The director of public works decides whether an event qualifies unless the Board of Supervisors or State of California has declared a disaster under Government Code § 8550 et seq.
    • The TED must be properly registered with the California Department of Motor Vehicles unless it is a mobilehome.
    • The TED must contain permanently affixed cooking, refrigeration, toilet, shower or bathtub, heating, potable-water, and electrical systems.
    • The TED must be located on the disaster-impacted parcel and occupied only by individuals who used that parcel as their primary residence on the disaster date.
    • The TED must meet applicable setbacks; normally only one TED may be installed per parcel, with additional TEDs allowed based on residence size, and never more than three per parcel.
    • A building permit is required before installation; hazardous disaster debris must be removed before occupancy; and a certificate of occupancy is required, expiring 18 months after issuance.
    • The TED must meet the applicable recreational-vehicle or mobilehome construction standards stated in § 18.83.040.

    maximum emergency dwelling occupancy period: 18 months · maximum TEDs per parcel: <= 3 TEDs (One TED is generally allowed; additional TEDs may be installed based on the impacted residence's square footage.)

    “"Temporary emergency dwelling (TED)" shall mean a recreational vehicle as defined in Section 18.06.460 of this code or any of the following: a recreational vehicle as described in Health and Safety Code Section 18010; a camper as defined in Vehicle Code Section 243; a camp trailer as defined in Vehicle Code Section 242; a fifth-wheel travel trailer as defined in Vehicle Code Section 324; a housecar as defined in Vehicle Code Section 362; or a mobilehome that has been approved pursuant to Title 25 of the California Code of Regulations that is left on its transportation chassis and is not temporarily or permanently affixed to the land. [...] Any individual in Inyo County whose primary residence has been rendered uninhabitable by a disaster shall be permitted to utilize a TED as a dwelling unit for a period of eighteen months.”
    One more reviewed finding on this topic
    • Prohibited — Use of an RV as a short-term rental dwelling in Inyo County; the county code defines short-term rental activity as residential-property rental for 30 days or less.
      “"Short-term rental" means to provide transient lodging in a dwelling unit, for compensation, for a period of 30 consecutive calendar days or less. "Short-term rental" does not include transient lodging in county-approved hotels and motels. [...] Short-term rentals shall not be permitted in dwelling units that are not compliant with applicable building and safety and/or environmental health requirements, or in non-habitable structures, tents, travel trailers, RVs, treehouses, yurts, or other provisions or structures not intended for primary occupancy.”
  • Camping on your landLimited

    Camping at Inyo County-operated campgrounds.

    • Camping stay is limited to 15 days at any one campground in any six-week period.
    • A 30-day camping permit is available to people age 62 and older.
    • Camping fees and rules are posted at each campground.
    • The source addresses County-operated campgrounds and does not establish a rule for all private land countywide.

    maximum stay: 15 days at any one campground in any six-week period (A 30-day camping permit is available to people 62 years of age and older.)

    “~ Camping stay is limited to 15-days at any one campground in any six-week period. ~ A 30 day camping permit is available to people 62 years of age and older.”
  • Manufactured homesLimited

    Manufactured or modular homes treated as mobilehomes in the C-5 Commercial Recreation zone and used as employee dwellings or in a mobilehome park.

    • Inyo County treats modular and manufactured houses as mobilehomes, while excluding recreational vehicles from the mobilehome definition.
    • In the C-5 zone, mobilehomes may be used for dwellings of persons regularly employed on the premises for commercial recreational activities.
    • A mobilehome park is a conditional use in the C-5 zone.
    • The cited sources do not establish unrestricted manufactured-home occupancy in all county zoning districts.
    “Dwellings of persons regularly employed on the premises for commercial recreational activities. Mobilehomes may be used for this purpose;”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in Inyo County residential and mixed-use zones.

    • ADUs are permitted in all residential and mixed-use zones.
    • The County zoning code's rules for principally permitted dwelling units in residential and mixed-use zones apply to ADUs.
    • State ADU law prevails if County zoning regulations conflict with state law.
    • The County public guidance states that a building permit is required.
    • The County guidance states that attached or detached ADUs require one parking space for newly constructed units unless the unit is within one-half mile of public transit, created within an existing building, in a historic district, or within one block of a car-share option.
    • JADUs have separate rules, including a 500-square-foot maximum and an owner-occupancy requirement.

    maximum detached ADU size: <= 1200 square feet · maximum attached ADU size: 1,200 square feet or 50% of the floor area of the primary residence square feet / percentage · minimum separation between detached structures: >= 10 feet · minimum rental term: >= 30 days (Short-term rental requires a Planning Department permit; pre-approved-plan ADUs are ineligible for short-term rental permits.)

    “Accessory dwelling units ("ADUs") are permitted in all residential and mixed use zones. Regulations found in this title regarding principally permitted dwelling units in the residential and mixed use zones apply to ADUs; provided, however, that if such regulations conflict with state law regarding ADUs, state law shall prevail.”
  • Who permits septicCounty

    Installation of residential septic systems in Inyo County.

    • Septic system design must comply with the Uniform Plumbing Code.
    • For new systems, the Inyo County Local Area Management Plan applies.
    • The cited page states that new standard systems are permitted in existing developments when lot size is at least 15,000 square feet, or in new developments when there are no more than two dwellings per acre.
    • Where a conventional system is unacceptable, an engineered alternative system is required.

    minimum lot size for new standard systems in existing developments: >= 15000 square feet · maximum dwelling density for new standard systems in new developments: <= 2 dwellings per acre

    “The Inyo County Environmental Health Department (ICEHD) is responsible for permitting and inspecting the installation of residential septic systems.”
    One more reviewed finding on this topic
    • County — Onsite wastewater treatment systems in unincorporated Inyo County.
      “The Inyo County Environmental Health Department (ICEHD) is responsible for permitting and inspecting the installation of residential septic systems.”
  • Septic permitRequired

    Construction, reconstruction, repair, modification, destruction, abandonment, or use of an onsite wastewater treatment system or greywater system in unincorporated Inyo County.

    • No person may construct, reconstruct, repair, modify, destroy, or abandon an OWTS or greywater system without first obtaining an AA permit.
    • An OWTS or greywater system may not be covered, abandoned, destroyed, modified, repaired, concealed, or put into use without a permit and final approval.
    • Routine maintenance and servicing by a qualified contractor may be performed without a permit if a written report is submitted to the AA and applicable requirements are met.
    • Alternative systems and systems with supplemental treatment require an operating permit before final construction approval.
    • A building permit must be issued for any new structure utilizing an OWTS before the OWTS construction permit is issued.
    • Construction permits expire if work is not commenced within one year; extensions may be granted under the stated conditions.
    “Before any construction begins, an “Application to Construct Sewage Disposal System” must be submitted to and approved by the AA.”
  • Septic inspectionRequired

    OWTS servicing and alternative or supplemental-treatment systems in unincorporated Inyo County.

    • Whenever an OWTS is serviced, a qualified inspector must inspect it and a written report must be submitted to the AA within 30 days.
    • If an inspection finds system failure, the report must be submitted within 24 hours.
    • Alternative OWTS owners must arrange visual and operating inspection at the manufacturer-specified frequency or at least once every three years.
    • Inspection reports for alternative systems are due within 30 days.
    • Supplemental-treatment systems also require periodic annual monitoring, with frequency specified in permit conditions.

    alternative OWTS inspection interval: <= 3 years (unless the manufacturer specifies a more frequent interval) · inspection report submission: <= 30 days (failure reports are due within 24 hours)

    “The report must be submitted to the AA within 30 days of the date of the servicing/inspection.”
  • Off-grid sanitationLimited

    Composting toilets, incinerating toilets, greywater systems, chemical toilets, and other non-septic sanitation methods in unincorporated Inyo County.

    • Composting and incinerating toilets require permission of the administrative authority.
    • Composting toilets must conform to ANSI/NSF Standard 41.
    • Incinerating toilets must conform to NSF P157.
    • Greywater systems are allowed only as required by the California Plumbing Code and require a county permit before construction, modification, or use.
    • Chemical toilets may be used only temporarily and/or occasionally.
    • Holding tanks are prohibited as a permanent sewage-disposal method unless specifically approved in writing by the AA.
    • New cesspools are not allowed.
    “Chemical toilets may only be used on a temporary and/or occasional basis.”
  • Well permitRequired

    Well construction, casing repairs or modifications, abandoned-well destruction, deep exploratory holes, and conversion of oil/gas or geothermal wells for water-well use in Inyo County.

    • The Inyo County Environmental Health Department issues permits to appropriately licensed California contractors.
    • Permit-required activities include construction of a new well; repairs or modifications to the casing of existing wells; destruction of abandoned wells; exploratory holes for soil testing, monitoring, or seismic exploration greater than twenty-five feet deep; and conversion of oil and gas or geothermal wells for use as a water well.
    • A complete permit application and accurate plot plan are required for review.
    • For multiple excavations, an individual application is required for each proposed bore hole, and each permit authorizes only one boring as proposed and approved.
    • Deviations require written approval before execution and may require updating and resubmitting the permit application and plot plan.
    • Projects with multiple excavations or extenuating circumstances may require a work plan.
    • The applicant must sign and return the indemnification document required by Inyo County Code section 14.24.052 before a permit can be issued.

    exploratory-hole permit threshold: > 25 feet (holes less than twenty-five feet deep are listed as not requiring a permit)

    “Activities that require a permit include: Construction of new well”
    2 more reviewed findings on this topic
    • Limited — Water-well construction, casing repair or modification, abandoned-well destruction, qualifying exploratory holes, and conversion of oil, gas, or geothermal wells for water use in Inyo County.
      “The Inyo County Environmental Health Department issues permits to appropriately licensed California contractors for a variety of drilling activities.”
    • Not required — Specified drilling activities in Inyo County that the county page expressly excludes from its well-permit requirement.
      “The following activities do not require a permit:”
  • Mandatory utility hookupConditional

    ADUs and JADUs addressed by the Inyo County ADU Guide Book.

    • Inyo County may allow ADUs or JADUs in areas where septic and well can be provided.
    • Depending on the type of ADU proposed, new or separate utility connections may be required, including water, sewer, gas, and electricity.
    • For an ADU or JADU contained within an existing, developed single-family residence or accessory structure, new or separate water and sewer connections are not required and related connection fees or capacity charges cannot be imposed.
    • For an ADU or JADU constructed at the same time as a new single-family dwelling, new or separate water and sewer connections may be required.
    • Connection or capacity charges for those new or separate connections must not exceed a reasonable cost for providing the service.
    “Depending on the type of ADU proposed, new or separate utility connections may be required including water, sewer, gas, and electricity, which can add connection fees or capacity charges.”
    One more reviewed finding on this topic
  • Subdividing landRegulated (with conditions)

    Division of land and subdivision mapping in unincorporated Inyo County.

    • The Inyo County Planning Commission acts as advisory agency and may approve, conditionally approve, or disapprove tentative maps and certificates of compliance.
    • Minimum subdivision lot sizes follow Title 18 zoning standards.
    • Cul-de-sac lot frontage must be at least forty feet.

    minimum cul-de-sac lot frontage: >= 40 feet

    “For subdivision purposes, the minimum lot sizes shall be the same as shown in Title 18 of this code. (Zoning ordinance). See Title 18 for minimum lot sizes. Lot design shall meet the standards as shown in Title 18 of this code. Lot frontage on cul-de-sacs shall be a minimum of forty feet.”
  • Building in a floodplainRequired

    Construction or other development, including manufactured-home placement, in an area of special flood hazard in unincorporated Inyo County.

    • The chapter applies to all areas of special flood hazards within the County of Inyo.
    • The adopted FEMA FIS and FIRMs for the unincorporated areas of Inyo County are effective December 3, 2020, together with subsequent amendments or revisions.
    • Applications may require scaled plans showing location, dimensions, elevations, structures, fill, storage, drainage, utilities, flood elevations, floodway location, foundation details, certifications, and watercourse alterations.
    • The site must comply with other applicable regulations, and more stringent overlapping restrictions prevail.
    • The Public Works Department director administers and enforces the chapter.

    FEMA FIS and FIRM effective date: 2020-12-03 (Subsequent amendments or revisions also apply) · maximum cumulative base-flood water-surface increase where no floodway is designated: <= 1 foot

    “A development permit shall be obtained before any construction or other development, including placement of manufactured homes, begins within any area of special flood hazard established in Section 14.28.070.”
  • Short-term rentalsLimited

    Short-term rental of residentially zoned property for 30 days or less in the unincorporated county.

    • Only hosted short-term rentals may operate on residentially zoned property.
    • The applicant must apply to the Planning Department.
    • The applicant must register with the Treasurer Tax Collector to collect and pay Transient Occupancy Tax.
    • The hosted-rental requirements call for a completed application, project description, ownership proof, insurance, owner information, off-street parking, emergency access, trash-receptacle location, interior and exterior site plans, tax registration, posted rules, a 300-foot owner list, and neighborhood acknowledgments.
    • On-street parking is prohibited.
    • Outdoor amplified sound and outdoor fires are prohibited; quiet hours are 9:00 p.m. to 7:00 a.m.; pets must be secured and nuisances are prohibited.

    short-term rental duration: <= 30 days or less · neighbor acknowledgment radius: 300 feet (Reasonable attempts must be documented if signatures cannot be obtained) · quiet hours: 9:00 p.m. to 7:00 a.m.

    “On February 11, 2020, The Board of Supervisors Updated the Short-term Rental Ordinance allowing only hosted short-term rentals to operate on residentially zoned property.”
  • Permit feesPublished (with conditions)

    Encroachment permits for work in the right-of-way of Inyo County roads.

    • A minimum permit fee of $50.00 is required with all applications.
    • Additional fees are calculated for each permit and are payable before issuance.

    minimum permit fee: 50 USD (Additional fees may apply.)

    “Minimum Permit fee of $50.00 is required with all applications. Additional Fees will be calculated for each permit, and payable before the permit is issued.”
  • Permit processPublished (with conditions)

    County building-permit applications and review in Inyo County.

    • The Building and Safety Department provides permitting, plan review, and inspection services.
    • Permit applications may be submitted by email to [email protected].
    “We provide permitting, plan review, and inspection services to help you complete your project according to established standards. Permit applications may be submitted via email to [email protected].”

California rules that apply here

  • Certificate of occupancyRequired

    Completed construction projects within HCAI jurisdiction involving California health facilities.

    • The HCAI Compliance Officer issues the project-completion Substantial Compliance or Certificate of Occupancy once required conditions are met.
    • The stated examples include delivery of all test reports to the Inspector of Record, clearance of outstanding items, and completion of the Testing, Inspection and Observation Program.
    • Once construction is completed, the certificate of occupancy allows the owner to apply to the Department of Health Services for a license to operate the health facility.
    “Issues the certificate of occupancy and/or construction final.”
  • Minimum dwelling sizeSpecified

    Efficiency units permitted by a California city, county, or city and county.

    • The local jurisdiction must adopt an ordinance permitting the efficiency unit.
    • Occupancy is limited to no more than two persons.
    • The unit may have partial kitchen or bathroom facilities as specified by the local ordinance.
    • All other applicable minimum standards under Health and Safety Code Part 1.5 continue to apply.

    minimum floor area: >= 150 square feet · maximum occupancy: <= 2 persons

    “Notwithstanding Sections 17922, 17958, and 17958.5, a city, county, or city and county may, by ordinance, permit efficiency units for occupancy by no more than two persons which have a minimum floor area of 150 square feet and which may also have partial kitchen or bathroom facilities, as specified by the ordinance.”
  • Tiny homesAllowed (with conditions)

    Occupancy of a structure marketed or described as a tiny home in California.

    • The tiny home must comply with applicable standards and be approved as a HUD-Code manufactured home, California Residential or Building Code home, factory-built housing, recreational vehicle, park trailer, or camping cabin.
    • The location must be approved for the applicable classification.
    • A tiny home that does not fit one of those classifications and does not comply with the California Building Standards Code is a noncomplying structure whose occupancy is illegal.
    • Approving and enforcing agencies vary depending on whether the unit is inside or outside a mobilehome or special occupancy park.

    park trailer or RV gross area limit: <= 400 square feet (Applicable classification-specific exclusions and standards apply.)

    “In order to be occupied, a tiny home must comply with the standards of, and be approved as one of the following types of structures: a HUD-Code manufactured home (MH), California Residential Code or California Building Code home, factory-built housing (FBH), recreational vehicle (RV), park trailer (PT) or camping cabin (CC).”
  • Driveway accessLimited

    Driveways and comparable access work located within, under, or over a California State highway right-of-way in Inyo County.

    • An encroachment permit is required unless the work falls within an identified exemption, including work under contract with Caltrans, certain Caltrans service contracts, a delegated maintenance agreement, authorized work in non-operating State highway right-of-way, or activity authorized by the California Vehicle Code that does not affect highway operation or safety.
    • Applicants must submit a current Standard Encroachment Permit Application with supporting documentation such as plans, a location map, environmental documentation, a letter of authorization, surety bonds, liability insurance, and applicable fees.
    • Fees vary by encroachment type and staff hours; a deposit is typically required. The Standard Hourly Rate is $181 per hour effective 2026-01-01.
    • The appropriate District Encroachment Permits Office has jurisdiction over the proposed encroachment site; Caltrans District 9 serves the Bishop area.

    standard hourly rate: 181 USD/hour (Effective 2026-01-01; fees vary by encroachment type and review or inspection time) · permit application decision deadline: <= 60 calendar days (After the application submittal is determined complete under Streets and Highways Code section 671.5(a))

    “An encroachment permit must be obtained for all proposed activities related to the placement of encroachments within, under, or over the State highway rights of way. Some examples of work requiring an encroachment permit are utilities, excavations, encroachment renewals, advertisements (when allowed by statute), vegetation planting or trimming, surveys, mailboxes, driveways, installation or removal of tire chains for compensation, special events, and commercial filming activities.”
    One more reviewed finding on this topic
    • Required — Driveways and driveway connections involving proposed encroachments within, under, or over State highway rights of way.
      “An encroachment permit must be obtained for all proposed activities related to the placement of encroachments within, under, or over the State highway rights of way.”
  • Campground & park staysLimited

    Occupancy and use of manufactured homes and mobilehomes in California mobilehome parks and other locations subject to HCD jurisdiction.

    • HCD administers titling and registration for manufactured homes and mobilehomes.
    • HCD-inspected mobilehome parks are subject to health and safety enforcement where local government has not assumed enforcement.
    • Manufactured/mobilehome park regulations address construction, use, maintenance, and occupancy.
    • Separate local land-use, building, fire, health, and utility requirements may apply.
    “MHs may be occupied outside or inside of mobilehome parks and installation and approval for occupancy is governed by the Mobilehome Parks Act (MPA), HSC Sections 18200, et seq., and Title 25, CCR Sections 1000, et seq.”
    2 more reviewed findings on this topic
    • Limited — RV and trailer camping at Silver Strand State Beach Campground in the San Diego Coast District.
      “Camping Stay Limits: Applies to persons, equipment, or vehicles and any combination thereof [...] Maximum stay of 30 days per calendar year [...] Maximum 7 consecutive days during peak season (May 15 – September 15) [...] Maximum 14 consecutive days during non-peak season”
    • Limited — Occupancy and use of recreational vehicles in California special occupancy parks and designated RV sections of mobilehome parks.
      “Unless otherwise allowed by a local ordinance, RVs generally may be occupied only in mobilehome parks or special occupancy parks governed by the Mobilehome Parks Act”
  • county zoning authorityGeneral

    California county legislative bodies' authority to adopt zoning ordinances regulating buildings, structures, land uses, lots, yards, open space, lot coverage, intensity of use, parking, loading, and setbacks within county jurisdiction, including unincorporated areas.

    • The authority is exercised pursuant to Government Code Chapter 4, Zoning Regulations.
    • The statute separately authorizes city legislative bodies; incorporated municipalities may exercise their own zoning authority.
    • Government Code Section 65850 also lists authority to regulate signs and billboards, building and structure location, height, bulk, number of stories, and size, lot and open-space size and use, lot coverage, intensity of land use, offstreet parking and loading, and building setback lines.
    • The cited section states it was amended by Stats. 2017, Ch. 376, Sec. 1, effective January 1, 2018.
    “The legislative body of any county or city may, pursuant to this chapter, adopt ordinances that do any of the following:”
  • county building authorityGeneral

    California counties administering and enforcing state building standards through county building departments, including residential construction in unincorporated areas.

    • Each county must maintain building standards and state building regulations in the office of the building official responsible for administration and enforcement of state building standards.
    • The statewide Title 24 standards apply subject to statutory exceptions and any authorized local amendments or local requirements.
    • The cited HCD bulletin concerns the 2019 California Building Standards Code and its July 1, 2021 supplement; later code editions may supersede those particular edition dates.
    “These codes shall be maintained in the office of the building official responsible for the administration and enforcement of state building standards”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Lot coverage — Maximum lot or site coverage in unincorporated Inyo County.
  • Agricultural exemption — Agricultural-building or agricultural-use exemption from county building, zoning, or development requirements in unincorporated Inyo County.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Water rights & wells in Inyo County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from California’s water agency.

Adjudicated — rights fixed

Water rights here have been fixed by a court. New supply effectively means acquiring an existing right.

Household wellPermit required — restricted

California requires no STATE permit for a domestic well — wells are permitted by the county — but under SGMA a Groundwater Sustainability Agency can meter or restrict new wells in medium/high-priority and critically overdrafted basins, and Executive Order N-7-22 requires counties in those basins to get GSA verification that a new well is consistent with the Groundwater Sustainability Plan before permitting.

Limit: 2 acre-feet/year de minimis under SGMA (Water Code §10721(e)) — largely exempt from GSA metering/fees

California DWR / State Water Board — SGMA de minimis & EO N-7-22 Action 9 FAQ ↗
  • Owens Valley (Inyo) — Adjudicated Area / LADWP Long-Term Water Agreementpartial of county

    On DWR's adjudicated-areas layer; groundwater pumping governed by the 1991 court-validated Inyo County–Los Angeles Long-Term Water Agreement with LADWP as operator; local development effectively cannot access basin supply.

    California DWR — Adjudicated Areas ↗
  • Indian Wells Valley Basin — Critically Overdrafted (Under Adjudication)localized of county

    Ridgecrest / China Lake desert basin ~4x overdraft, also in active court adjudication; import-fee framework; effectively closed to new large appropriation.

    California DWR Bulletin 118 — Critically Overdrafted Basins ↗

Hybrid state (appropriation + riparian). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the California state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Inyo County, California

Is Inyo County a good place to live off-grid or homestead?

Inyo County scores 23/100 on the Bolthole Index, a weak county profile. Its strengths: sparse surroundings — about 3,133 people within 15 miles and manageable long-term carry cost. Watch-outs: weak self-sufficiency basics: only 6″ of rain a year, in severe drought 44.8% of years and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Inyo County, California?

Inyo County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Inyo County Environmental Health Department (ICEHD). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Inyo County?

Living in an RV on your own land in Inyo County is allowed on a temporary basis only: Use of a recreational vehicle as a temporary emergency dwelling by an Inyo County resident whose primary residence was rendered uninhabitable by a disaster. The primary residence must have been rendered uninhabitable by a disaster. A disaster generally means a natural catastrophe rendering two or more residences uninhabitable, or a small-scale accidental disaster such as a house fire destroying a single residence; resident-caused deterioration does not qualify. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Inyo County, California?

Land in Inyo County runs about $961 per acre, based on the latest county data.

What is the water situation in Inyo County?

Inyo County gets about 6" of rain a year, with severe drought in roughly 44.8% of years. On water rights, Inyo County lies in the Owens Valley (Inyo) — Adjudicated Area / LADWP Long-Term Water Agreement — On DWR's adjudicated-areas layer; groundwater pumping governed by the 1991 court-validated Inyo County–Los Angeles Long-Term Water Agreement with LADWP as operator; local development effectively cannot access basin supply..

How remote is Inyo County?

A typical private-land location has about 3,133 people within 15 miles and 1,173,432 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

Going off-grid in Inyo County means bringing your own water and power. The kit we’d start with:

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How Inyo compares in California

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