Plumas County, CA Building Permits, Zoning & Septic Rules

Unincorporated Plumas County, California requires building permits and applies county zoning and land-use standards¹². The Plumas County Building Department handles permit review and inspections, while Environmental Health oversees septic systems and wells³⁴⁵. RV camping is temporary and zone-dependent, and a tiny home on wheels cannot be occupied year-round⁶⁷.

At a glance

Building permit: Required in unincorporated Plumas County; permitted work must pass county inspections¹⁸
Zoning: County zoning applies in unincorporated areas; lot size and setbacks depend on the district²⁹¹⁰
Septic permits: Plumas County Environmental Health oversees onsite wastewater systems and sewage-disposal permits⁴¹¹
RV living: Not year-round; private-land camping is zone-dependent and subject to time, sanitation and owner-consent limits⁶
Tiny home: A tiny home on wheels is treated as an RV; other tiny homes need an approved code-compliant classification and location⁷¹²
Owner-builder: A conditional contractor-license exemption is available, but building permits and inspections still apply¹³¹⁴
Water well: A county permit and a state-licensed, bonded drilling contractor are required⁵

Who to call

Building permits

Plumas County Building Department

Building permits, plan review and inspections

(530) 283-7011

555 Main Street, Quincy, CA 95971

Zoning

Plumas County Planning Department

Parcel zoning, land-use and development requirements for unincorporated Plumas County

(530) 283-7011

555 Main Street, Quincy, CA 95971

Septic permits

Plumas County Environmental Health

Septic and well permits, site review and inspections

(530) 283-6355

[email protected]

270 County Hospital Road, Suite 127, Quincy, CA 95971

Roads & driveways

Plumas County Department of Public Works

Encroachment permits for drive approaches and other work in county-maintained road rights-of-way

(530) 283-6268

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

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

Yes. Unincorporated Plumas County requires building permits, and the county Building Department enforces the California Building Standards Code¹. California requires a separate permit before covered construction, enlargement, alteration, repair, movement, improvement, removal, conversion or demolition begins¹⁵. Permit applications made in 2026 or later fall under the statewide 2025 California Building Standards Code¹⁶. Work performed under a Plumas County building permit must be inspected and approved by a county building inspector⁸. Plumas County publishes development-review and permit fees, but the total depends on the particular project and applicable reviews¹⁷. An owner-builder exemption can remove the contractor-license requirement when its conditions are met, but it does not remove building permits, code compliance or inspections¹³¹⁴.

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

The Plumas County Building Department provides permit review and inspection services at 555 Main Street in Quincy; call (530) 283-7011 before submitting plans³. The department is the first stop for a proposed home, addition, garage or other code-regulated structure in unincorporated Plumas County¹³. Planning is a separate review at the same address and phone number; the Plumas County Planning Department handles parcel zoning, land-use and development requirements¹⁸. Start with Planning when the project depends on allowed use, setbacks, lot area or a combining zone, then coordinate the construction documents with Building¹⁹¹⁰. County permit fees are published, but applicants should ask the departments for a project-specific estimate because we could not confirm one universal building-permit price¹⁷.

Does Plumas County have zoning?

Yes. Plumas County administers zoning and land-use requirements on unincorporated land, and the outcome depends on the parcel's zoning district, General Plan requirements and other applicable regulations²¹⁹. Residential lot-area minimums vary substantially by district rather than following one countywide number⁹. In the districts covered by the county's residential standards table, the front setback is 20 feet; side and rear setbacks are 5 feet per story on parcels under 1 acre and 30 feet on parcels over 1 acre¹⁰. The same table shows a 35-foot maximum building height for its listed districts, while noting that the limit does not control the number of stories²⁰. The county materials did not confirm one general minimum dwelling floor area, so ask the Planning Department about the parcel and proposed home rather than assuming there is no minimum¹⁸.

How do septic permits work in Plumas County?

Plumas County Environmental Health oversees the design, construction and installation of onsite wastewater treatment systems and wastewater holding tanks⁴²¹. A sewage-disposal permit governs installation, and the county allows a one-time extension when work cannot be completed within the permit's 1-year period; otherwise a new application and fees are required¹¹. Environmental Health also schedules and performs septic and well inspections, while engineered or alternative systems receive an additional inspection by a registered professional²². Call Environmental Health at (530) 283-6355 or visit 270 County Hospital Road, Suite 127, in Quincy²³. Site feasibility deserves attention before purchase: only about 1.5% of county soils are rated without severe limitations for a conventional septic drain field, so a standard system may be difficult on many parcels²⁴.

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

Plumas County does not treat private-land RV camping as year-round housing. Noncommercial camping outside a campground is limited to no more than 120 days per calendar year, requires the property owner's agreement and compliance with county health rules, and triggers proper water and sanitation arrangements after 17 consecutive days⁶. Camping is allowed in some zoning districts and prohibited in others, so confirm the parcel's primary and combining zones with the Planning Department before relying on an RV during construction⁶¹⁸. A tiny home on wheels is treated as an RV and cannot be occupied year-round; habitation is limited to an RV park, campground or the county's camping allowance, and it cannot be used for habitation in single-family residential areas⁷. A tiny home built as another approved classification must comply with that classification's standards and be placed where the classification is allowed¹².

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

Ask the Planning Department to confirm the parcel's zoning, permitted residential use, lot standards and combining zones before design begins¹⁸¹⁹.
Determine sewage disposal and water early: Environmental Health handles septic and well review, and only a state-licensed, bonded C-57 contractor may drill the well⁴⁵.
Prepare plans for the applicable California Building Standards Code and submit the building-permit application to the Building Department¹⁶³.
If the driveway or utilities will enter a county-maintained road right-of-way, obtain a Public Works encroachment permit before doing that work²⁵. A connection to a state highway instead requires a Caltrans encroachment permit²⁶.
Schedule and pass county inspections for all work performed under the building permit⁸.
If acting as owner-builder, document which statutory pathway applies and remember that the exemption concerns contractor licensing, not the permit itself¹³.

What should you check before buying land in Plumas County?

Start with parcel zoning, minimum lot area, setbacks and the Flood Plain Combining Zone; Plumas County regulates floodplain development for reasonable safety from flood hazards, but applicability must be checked parcel by parcel through county zoning information and FEMA mapping⁹²⁷. Test septic feasibility before treating a homesite as buildable because only about 1.5% of county soils are rated without severe limitations for a conventional drain field²⁴. Check terrain and access as well: about 21.7% of county land has a slope of 15% or less, and work in a county road right-of-way needs an encroachment permit²⁸²⁵. Roughly 73.3% of Plumas County is federal land, so verify legal access and parcel boundaries rather than assuming adjoining public land creates access²⁹. For carrying costs, the median property-tax bill is about $2,360 per year and the typical home-insurance premium is about $2,459 per year³⁰³¹.

Watch-outs

Private-land RV camping is not year-round housing: it is capped at 120 days per calendar year, and stays beyond 17 consecutive days require proper health and sanitation arrangements⁶.
A tiny home on wheels is an RV in Plumas County and cannot be lived in year-round⁷.
Plumas County did not confirm one general minimum dwelling floor area or a general agricultural exemption; ask the Planning Department about the proposed structure and parcel¹⁸.
A county-road driveway needs a county encroachment permit, while a connection within a state highway right-of-way goes through Caltrans²⁵²⁶.

Sources

Written September 27, 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.

How Plumas County scores

Seclusion71100% ev.

Self-Sufficiency47100% ev.

Admin Boringness3690% ev.

Durability20100% ev.

Property Autonomy56100% ev.

Carry Cost70100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$371kTypical home

0.7%Property tax

$4,222Land / acre

41.3"Annual rain

36% of yrsSevere drought

1.7 / yr (+1.5)Mid-century 100°F days

48.6 daysMid-century dry spell

2.89" (+4.7%)Mid-century 1-day rain

1.11×Wildfire change factor

100%Forward climate coverage

$2,459Home insurance / yr

11.6% / yrInsurance growth

3.37%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

8,413Radius comparison (15 mi)

7.5People / sq mi

73.3%Federal land

21.7%Land at 15% slope or less

1.5%Septic soil without severe limits

20,883 acWorkable land screen

63.6%Wooded land

70.1 tonsBiomass / forest ac

47.9°FAvg temp

Answers from the rulebook for Plumas County

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

Plumas County rules

Building code adoptedAdopted (with conditions)
Building standards enforced by Plumas County in the unincorporated area, including the California Building, Electrical, Mechanical, Plumbing, and Fire Codes, State Housing Law, WUI standards, and county SRA FireSafe regulations.
- The source states that no local amendments have been made.
- New state-adopted revised codes are locally adopted without the need to amend the ordinance every three years.
- WUI Building Standards apply in High Fire Hazard Severity Zones and Very High Fire Hazard Severity Zones.
- The County has adopted local certified SRA FireSafe regulations in lieu of state regulations.
California Building Code adoption: 2007 and all subsequent editions (2016) · International Building Code adoption: 2006 · California Electrical Code adoption: 2007 and all subsequent editions (2016) · California Mechanical Code adoption: 2007 and all subsequent editions (2016) · California Plumbing Code adoption: 2007 and all subsequent editions (2016) · California Fire Code adoption: 2007 and all subsequent editions (2016)
“Plumas County has adopted: 2007 and all subsequent editions (2016) of the California Building Code”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
InspectionsRequired
All work being done with a Plumas County building permit.
- The requirement applies to work being done with a permit.
- Inspection requests must include the permit number, inspection type, property address, requested date, and attending person's name and phone number.
- Inspection requests must be received by no later than 3 PM of the working day before the requested inspection.
“Inspections and approval by a County Building Inspector are required for all work being done with a permit.”
Inspection Request ↗Re-checked Sep 24, 2026
County-wide zoningPresent (with conditions)
County zoning and land-use development requirements administered by Plumas County Planning and Building Services for the unincorporated area.
- The Planning Department describes land-use and development requirements administered by the Planning and Building Services Departments.
- Specific development outcomes depend on the applicable zoning district, General Plan requirements, and other applicable regulations.
“The County’s share of the regional housing need will be met through the identification of available sites that are suitable and appropriately zoned for residential uses.”
Planning Department | Plumas County, CA ↗Re-checked Sep 24, 2026
Minimum lot sizeDistrict specific (with conditions)
New residential development in unincorporated Plumas County zoning districts.
- The source states these standards apply to all new residential developments.
- Manufactured Home Combining Zone (MH) standards are those required by the primary zoning with which MH is combined.
- The listed lot-area standards are county zoning standards and may not describe incorporated municipalities.
minimum lot area by district: 2-R: 21,780 sq ft; 3-R: 14,520 sq ft; 7-R: 6,223 sq ft; M-R: 6,000 sq ft; S-1: 43,560 sq ft; S-3: 130,680 sq ft; R-10: 435,600 sq ft; R-20: 871,200 sq ft; AP: 3,484,800 sq ft; GA: 1,742,400 sq ft
“Table 22 presents the County’s development standards, which are applied to all new residential developments. [...] 2-R 35 ft 60 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 21,780 - 50% [...] GA 35 ft 300 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 1,742,400 - 1 Acre7”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
SetbacksDistrict specific (with conditions)
Minimum residential yard setbacks in unincorporated Plumas County zoning districts.
- Front setback is 20 feet in the listed districts.
- For parcels under one acre, side and rear setbacks are 5 feet per story.
- For parcels over one acre, side and rear setbacks are 30 feet.
- MH standards are those required by the primary zoning with which MH is combined.
- The source identifies these as standards applied to all new residential developments.
front yard setback: 20 ft (Listed districts in Table 22) · side and rear yard setback for parcels under 1 acre: 5 ft/story (Listed districts in Table 22) · side and rear yard setback for parcels over 1 acre: 30 ft (Listed districts in Table 22)
“Minimum Yard Setback [...] Front Side [...] Parcels < 1 acre [...] Parcels > 1 acre [...] Rear Parcels < 1 acre [...] Rear Parcels > 1 acre [...] 2-R 35 ft 60 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 21,780 - 50%”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
Lot coverageDistrict specific (with conditions)
Maximum lot coverage for new residential development in unincorporated Plumas County zoning districts.
- Maximum lot coverage is 50% in 2-R, 3-R, 7-R, M-R, S-1, S-3, and R-10.
- R-20 has no maximum lot-coverage figure shown in the table.
- AP and GA show one-acre coverage limits.
- For S-1 parcels at least one acre, each dwelling unit and accessory buildings shall cover no more than one acre.
- For S-3 parcels at least three acres, each dwelling unit and accessory buildings shall cover no more than one acre.
- For R-10 parcels at least ten acres, each dwelling unit and accessory buildings shall cover no more than one acre.
- For R-20 parcels at least twenty acres, each dwelling unit and accessory buildings shall cover no more than one acre.
- For AP and GA, each dwelling unit and accessory buildings shall cover no more than one acre; miscellaneous permitted compatible uses shall cover no more than one acre.
- MH standards are those required by the primary zoning with which MH is combined.
maximum lot coverage: 2-R: 50%; 3-R: 50%; 7-R: 50%; M-R: 50%; S-1: 50%; S-3: 50%; R-10: 50%; R-20: not stated in table; AP: 1 acre; GA: 1 acre (See parcel-size exceptions in conditions)
“S-1 35 ft 120 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 43,560 - 50%3 [...] R-20 35 ft 300 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 871,200 - - [...] 6 For parcels at least twenty (20) acres in size, each dwelling unit and accessory buildings shall cover no more than one acre. 7 Each dwelling unit and accessory buildings shall cover no more than one acre. Miscellaneous permitted compatible uses shall cover no more than one acre”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
Building heightDistrict specific (with conditions)
Maximum building height for new residential development in unincorporated Plumas County zoning districts.
- The maximum height shown is 35 feet for 2-R, 3-R, 7-R, M-R, S-1, S-3, R-10, R-20, AP, and GA.
- The source states the height limit does not apply to the number of stories.
- MH standards are those required by the primary zoning with which MH is combined.
maximum building height: 35 ft (Height limit only; does not apply to number of stories)
“2-R 35 ft 60 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 21,780 - 50% [...] GA 35 ft 300 ft 20 ft 5 ft/story 30 ft 5 ft/story 30 ft 1,742,400 - 1 Acre7 [...] 2 Height limit only, does not apply to number of stories.”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
Living in an RVLimited
Camping and human habitation in recreational vehicles on private land in unincorporated Plumas County.
- Camping on private land must be non-commercial and not a campground.
- Camping is limited to no more than 120 days in a calendar year.
- All County health regulations must be met and the property owner must concur.
- After 17 consecutive days, proper health and sanitation is required, such as an RV hookup for well and septic.
- The number of RVs may be at least one and otherwise may not exceed the number of dwelling units, additional quarters, and guest house permitted by zoning, less the number already on the property.
- Camping is prohibited countywide in zones 2-R, 3-R, 7-R, M-R, C-1, C-2, C-3, Rec-OS, OS, and L.
- Camping is allowed countywide in zones S-1, S-3, R-10, R-20, R-C, Rec-P, Rec-1, Rec-3, Rec-10, Rec-20, I-1, I-2, AP, GA, TPZ, GF, and M.
maximum camping duration: <= 120 days per calendar year (subject to all stated zoning, owner-consent, health, sanitation, and RV-number limits) · health and sanitation trigger: > 17 consecutive days (proper health and sanitation is then required)
“Camping is permitted on private land (non-commercial/not a campground) for no more than 120 days in a calendar year if all aspects of the County health regulations are met and subject to the concurrence of the property owner. After 17 consecutive days proper health and sanitation is required (e.g., RV hook up for well and septic).”
FAQs ↗Re-checked Sep 24, 2026
Camping on your landLimited
Temporary camping on private land in unincorporated Plumas County.
- Camping on private land must be non-commercial and not a campground.
- Camping is limited to no more than 120 days in a calendar year.
- All County health regulations must be met and the property owner must concur.
- After 17 consecutive days, proper health and sanitation is required.
- County zoning determines whether camping is prohibited or allowed in the listed zoning districts.
maximum camping duration: <= 120 days per calendar year (subject to County health regulations and property-owner concurrence)
“Camping is permitted on private land (non-commercial/not a campground) for no more than 120 days in a calendar year if all aspects of the County health regulations are met and subject to the concurrence of the property owner. After 17 consecutive days proper health and sanitation is required (e.g., RV hook up for well and septic).”
FAQs ↗Re-checked Sep 24, 2026
Tiny homesLimited
Tiny homes on wheels used for occupancy in unincorporated Plumas County.
- A tiny home on wheels is treated as an RV.
- It cannot be lived in year-round.
- Human habitation is allowed only in an RV park, campground, or under Plumas County camping zoning limitations.
- It may not be used for human habitation in single-family residential areas.
- Camping is limited to no more than 120 days per calendar year, requires owner consent, and requires County health-regulation compliance for water and sanitation after 17 consecutive days.
- The number of RVs is limited by the dwelling-unit, additional-quarters, and guest-house calculation stated by the County.
maximum camping duration: <= 120 days per calendar year (subject to applicable camping zoning limits and conditions)
“A tiny home on wheels is considered a Recreational Vehicle (RV) and would be regulated by either DMV or CA Housing and Community Development (HCD). An RV by definition is considered a vehicle and not a structure therefore cannot be lived in year-round.”
Tiny Home Information Guide ↗Re-checked Sep 24, 2026
Who permits septicCounty
On-site wastewater treatment systems and wastewater holding tanks in Plumas County.
“The Department of Environmental Health oversees the design, construction, and installation of all on-site wastewater treatment systems and wastewater holding tanks.”
Liquid Waste ↗Re-checked Sep 24, 2026
Septic permitRequired
Installation of on-site wastewater treatment systems in Plumas County.
- The county page states that installation must follow the procedure allotted to the sewage disposal permit.
- A one-time extension is available if the project cannot be completed within the one-year period; otherwise a new application and fees are required.
- Alternative systems may be used where a standard system cannot be installed.
installation completion period: 1 year from permit issue (one-time extension available)
“Regardless of the type of system, you must follow the step-by-step procedure to complete the installation in the time frame that is allotted to the sewage disposal permit.”
Liquid Waste ↗Re-checked Sep 24, 2026
Septic inspectionRequired
Septic inspections in Plumas County, including inspections coordinated through Environmental Health.
- Well and septic inspections are scheduled and inspected by the Department of Environmental Health.
- For engineered or alternative systems, a registered professional also performs inspection in addition to the Environmental Health Specialist.
“No. Well and septic inspections are scheduled and inspected by the Department of Environmental Health. Call (530) 283-6355 for more information.”
FAQs ↗Re-checked Sep 24, 2026
Well permitRequired
Construction of water wells in Plumas County.
- The application requires a preliminary plot plan and appropriate fee.
- The Planning and Building Services Agency reviews land-use and setback requirements before forwarding the application to Environmental Health.
- Environmental Health schedules a site inspection and issues the construction permit if requirements are met.
- Only a state-licensed and bonded C-57 drilling contractor is authorized to drill.
- For an agricultural production well in the Sierra Valley Groundwater Management District, the District must review the application before Environmental Health can issue the permit.
water-well construction permit validity: 1 year from issue (one-time renewal for up to one year may be requested before expiration) · minimum well depth: >= 50 feet
“Submit the completed Application for Permit to Construct a Water Well and a preliminary plot plan drawn to scale on an 8 ½" X 11" sheet to the Planning and Building Services Agency with the appropriate fee.”
Plumas County Well Manual ↗Re-checked Sep 24, 2026
Subdividing landRegulated (with conditions)
Single-family-unit subdivisions in unincorporated Plumas County.
- Tentative Map Review is required, including approval by the Zoning Administrator.
- The source lists an estimated total processing time of 12 months for a single-family unit subdivision.
- Other project types have different listed requirements and timelines.
estimated total processing time: 12 months (Source labels this as an estimate)
“Table 26 Typical Processing Procedures by Project Type [...] Tentative Map Review (including approval by Zoning Administrator) [...] Est. Total Processing Time 4-8 weeks 12 months 8 weeks 12 weeks”
Plumas County 2019–2024 Housing Element ↗Re-checked Sep 24, 2026
Building in a floodplainLimited
Development in the Plumas County Flood Plain Combining Zone (FP).
- The FP combining zone regulates development to achieve reasonable safety from flood hazards.
- Parcel-specific applicability must be checked through the County zoning/GIS information and FEMA floodplain maps.
- The cited source does not state a universal permit requirement or numeric development standard.
“Flood Plain Combing Zone (FP) regulates development to achieve reasonable safety from flood hazards.”
Planning Department ↗Re-checked Sep 24, 2026
Permit feesPublished (with conditions)
County development-project review and related permits in unincorporated Plumas County.
- New fees are enacted by resolution of the Plumas County Board of Supervisors.
- The resolution formally amends the County Master Fee Schedule.
- Fees become effective 60 days after Board adoption.
- The page identifies Resolution 24-8957 as approved 10/8/24 and effective 12/7/24 for Department of Public Works fees, and Resolution 24-8958 as approved 10/8/24 and effective 12/7/24 for Engineering Department fees.
“A description of the application fees and fee amount is included on the following pages.”
Permits and Fees ↗Re-checked Sep 24, 2026

California rules that apply here

Building permitRequired
Construction projects within the California Department of Health Care Access and Information Office of Statewide Hospital Planning and Development jurisdiction, including health-facility projects requiring HCAI review.
- Written plan approval must be issued before the building-permit application proceeds.
- The application must provide contractor information, Inspector of Record information, and a Testing Inspection and Observation program.
- The TIO program must be field-approved before approval and subsequent issuance of the building permit.
- This claim does not establish the permit rule for projects outside HCAI jurisdiction.
“Once a project receives written plan approval, a Building Permit application is submitted through the e-Services Portal.”
Building Permits & Construction Observation ↗Re-checked Sep 26, 2026
Owner-builder exemptionAvailable (with conditions)
Exemption from California contractor-licensing chapter for an owner-builder who builds or improves a structure on the owner’s property; this does not itself establish exemption from local building permits, inspections, or other code requirements.
- For work personally performed by the owner or performed by the owner’s employees, none of the improvements may be intended or offered for sale, and employee compensation must be wages as their sole compensation.
- For work directly contracted to licensed trade contractors, the owner must directly contract with licensees duly licensed for the respective trades.
- For single-family residential structures under the licensed-contractor arrangement, no more than four structures may be intended or offered for sale in a calendar year; this limitation does not apply if the owner contracts with a general contractor for construction.
- For a homeowner improving a principal residence or its appurtenances, the work must be performed before sale, the homeowner must have actually resided in the residence for the 12 months before completion, and the homeowner must not have used this exemption on more than two structures more than once during any three-year period.
- A nonprofit corporation may qualify when assisting an owner-builder participating in a mutual self-help housing program.
- Sale or offering for sale within one year after completion creates a rebuttable presumption that the structure was undertaken for sale; sale or offering for sale of five or more structures within one year creates a conclusive presumption.
- This is a contractor-licensing exemption and should not be treated as a building-permit exemption.
single-family structures intended or offered for sale: <= 4 structures per calendar year (Does not apply if the owner contracts with a general contractor for construction.) · prior residence occupancy: >= 12 months before completion (Applies to the principal-residence homeowner exemption.) · owner-builder exemption use: <= 2 structures during any three-year period (The statute states the homeowner has not availed himself or herself of the exemption on more than two structures more than once during any three-year period.) · sale presumption period: 1 year after completion (Sale or offering for sale creates a rebuttable presumption; five or more structures creates a conclusive presumption.) · conclusive-presumption threshold: >= 5 structures within one year after completion (Structures sold or offered for sale by the owner-builder.)
“This chapter does not apply to any of the following: (1) An owner who builds or improves a structure on his or her property”
California Business and Professions Code Section 7044 ↗Re-checked Sep 26, 2026
2 more reviewed findings on this topic
- Conditional — Owners who build or improve structures on their own property, and homeowners improving their principal residence or appurtenances, subject to Business and Professions Code section 7044.
  “(a) This chapter does not apply to any of the following: (1) An owner who builds or improves a structure on his or her property”
  California Business and Professions Code Section 7044 ↗Re-checked Sep 26, 2026
- Available (with conditions) — California contractor-licensing requirements for an owner who builds or improves a structure on the owner’s property; this is not stated as an exemption from building permits, inspections, or other code requirements.
  “This chapter does not apply to any of the following: (1) An owner who builds or improves a structure on his or her property”
  California Business and Professions Code section 7044 ↗Re-checked Sep 26, 2026
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.”
HCAI Standard Project Process ↗Re-checked Sep 26, 2026
Zoning districtsPartial
California city and county zoning codes and the zoning districts established by those local jurisdictions.
- The city or county zoning code implements general-plan policies at the individual-parcel level.
- Local zoning codes identify allowed land uses in the jurisdiction’s zoning districts.
- Since 1971, state law requires city or county zoning codes to be consistent with the jurisdiction’s general plan, except in charter cities.
- The source does not publish a statewide list of parcel-specific zoning districts; the applicable local jurisdiction must be consulted.
“The zoning code presents standards for different land uses and identifies which land uses [...] are allowed in the various zoning districts of the jurisdiction.”
Chrome Plating Amendments Environmental and Regulatory Setting ↗Re-checked Sep 26, 2026
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.”
California Health and Safety Code Section 17958.1 ↗Re-checked Sep 9, 2026
Manufactured homesAllowed (with conditions)
Occupancy of manufactured homes inside or outside mobilehome parks in California.
- The manufactured home must satisfy applicable federal standards and California Manufactured Housing Act and Title 25 requirements.
- Installation and approval for occupancy are governed by the Mobilehome Parks Act.
- HCD or a local enforcement agency with assumed Mobilehome Parks Act authority is responsible for ensuring compliance with statutory construction and maintenance requirements.
- Local agency approvals may be necessary for the project.
minimum width for a new manufactured home: >= 8 body feet (The statutory definition also includes units at least 40 body feet in length.) · minimum erected floor area for a new manufactured home: >= 320 square feet
“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.”
Information Bulletin 2016-01: Tiny Homes ↗Re-checked Sep 9, 2026
Accessory dwellingsAllowed (with conditions)
ADUs and junior ADUs subject to California State ADU Law.
- Approval is ministerial and without discretionary review or a hearing.
- Development standards must be objective and knowable in advance.
- The local permitting agency must determine application completeness and provide written notice within 15 business days.
- If an application is incomplete, the agency must identify missing items and explain how to complete it.
- Local site, building, health, safety, fire, utility, and other applicable requirements continue to apply.
written completeness determination: <= 15 business days (Measured from the permitting agency's receipt of the application.) · final written determination after appeal: <= 60 business days (Applies after receipt of the written appeal.)
“A permit application for an accessory dwelling unit shall be considered and approved ministerially without discretionary review or a hearing [...] A permitting agency shall determine whether an application to create or serve an accessory dwelling unit is complete and provide written notice of this determination to the applicant not later than 15 business days after the permitting agency received the application.”
Accessory Dwelling Unit Handbook March 2026 ↗Re-checked Sep 9, 2026
Mandatory utility hookupSewer (with conditions)
Certain existing OWTS in California Tier 3 impaired-water-body areas that commit to connect to a centralized wastewater collection and treatment system regulated through waste discharge requirements.
- The OWTS must have been constructed and operating, or permitted, on or before the date the nearby water body was added to OWTS Policy Attachment 2.
- The owner must commit by legally binding document to connect to a centralized wastewater collection and treatment system regulated through waste discharge requirements.
- The owner must sign the legally binding document within 48 months after the nearby water body's initial listing on Attachment 2.
- The specified connection date may not extend beyond nine years after the date the nearby water body is added to Attachment 2.
- The rule is an exception to Section 10 requirements for qualifying existing or permitted systems; it is not a general statewide requirement that every property connect to public sewer.
deadline to sign connection commitment: 48 months (Measured from the date the nearby water body is initially listed on Attachment 2.) · maximum time to complete connection: <= 9 years (Measured from the date the nearby water body is added to Attachment 2.)
“The owner must sign the document within forty-eight months of the date that the nearby water body is initially listed on Attachment 2. The specified date for the connection to the centralized community wastewater collection and treatment system shall not extend beyond nine years following the date that the nearby water body is added to Attachment 2.”
2023 OWTS Policy ↗Re-checked Sep 26, 2026
Driveway accessRequired
Driveways and driveway connections involving proposed encroachments within, under, or over State highway rights of way.
- The requirement applies to proposed activities related to placement of encroachments within, under, or over State highway rights of way.
- Applications are submitted to the appropriate District Encroachment Permits Office having jurisdictional authority over the site.
- Local or other agency requirements may also apply outside 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.”
Encroachment Permits | Caltrans ↗Re-checked Sep 26, 2026
Permit processPublished (with conditions)
Construction, alteration, repair, movement, improvement, removal, conversion, or demolition of a building or structure in California.
- A separate permit for each building or structure must be obtained from the building official before the work.
- Code requirements vary by city and county; the applicable local building department must be consulted.
“no building or structure may be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted or demolished unless a separate permit [...] has first been obtained”
Do I need a building permit for my project? ↗Re-checked Sep 9, 2026
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.”
Manufactured & Mobilehomes ↗Re-checked Sep 26, 2026
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”
  Silver Strand State Beach Campground Rules and Regulations ↗Re-checked Sep 9, 2026
- 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”
  What is a Mobilehome Park or Special Occupancy Park? ↗Re-checked Sep 26, 2026
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:”
California Government Code Section 65850 ↗Re-checked Sep 21, 2026
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”
Information Bulletin 2021-02: 2019 California Building Standards Code Supplement ↗Re-checked Sep 26, 2026

Still unanswered

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

Off-grid sanitation — Off-grid sanitation arrangements in Plumas County.
Agricultural exemption — Possible agricultural exemptions from county building, zoning, or development requirements in unincorporated Plumas County.
Short-term rentals — Short-term rental use in unincorporated Plumas 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 Plumas County

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

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

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 ↗

Sierra Valley Basin — Medium Prioritypartial of county
Medium-priority SGMA basin (DWR 2019 Basin Prioritization) requiring an adopted Groundwater Sustainability Plan; a new well is subject to GSA consistency review under Executive Order N-7-22. De minimis domestic wells (<2 af/yr) are generally exempt from GSA metering but still need a county permit.
California DWR — SGMA Basin Prioritization (2019) ↗

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 Plumas County, California

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

Plumas County scores 47/100 on the Bolthole Index, a solid county profile. Its strengths: sparse surroundings — about 8,413 people within 15 miles and manageable long-term carry cost. Watch-outs: elevated current hazard exposure and more administrative friction around building and land use.

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

Plumas County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Plumas County Public Health Agency, Environmental Health Division. 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 Plumas County?

Living in an RV on your own land in Plumas County is limited to specific cases: Camping and human habitation in recreational vehicles on private land in unincorporated Plumas County. Camping on private land must be non-commercial and not a campground. Camping is limited to no more than 120 days in a calendar year. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Plumas County, California?

Land in Plumas County runs about $4,222 per acre, based on the latest county data.

What is the water situation in Plumas County?

Plumas County gets about 41.3" of rain a year, with severe drought in roughly 36% of years. On water rights, Plumas County lies in the Sierra Valley Basin — Medium Priority — Medium-priority SGMA basin (DWR 2019 Basin Prioritization) requiring an adopted Groundwater Sustainability Plan; a new well is subject to GSA consistency review under Executive Order N-7-22. De minimis domestic wells (<2 af/yr) are generally exempt from GSA metering but still need a county permit..

How remote is Plumas County?

A typical private-land location has about 8,413 people within 15 miles and 1,369,152 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

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

At a glance

Who to call

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

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

Does Plumas County have zoning?

How do septic permits work in Plumas County?

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

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

What should you check before buying land in Plumas County?

Watch-outs

Sources

Plumas County in California

How Plumas County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Plumas County

Plumas County rules

California rules that apply here

Still unanswered

Water rights & wells in Plumas County

Living off-grid in Plumas County, California

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

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

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

How much does land cost in Plumas County, California?

What is the water situation in Plumas County?

How remote is Plumas County?

How Plumas compares in California