Bolthole Index

San Juan County, Colorado

Building permits, zoning and land rules in San Juan County, Colorado

38Index Score / 100
#63 of 64 in Colorado

San Juan County, Colorado requires building permits and administers adopted building codes through its Building Department12. County Planning also provides zoning compliance and reviews land-use proposals34. For land outside sewer service, secure the required onsite wastewater permit before building approval and contact La Plata County Public Health for inspections56.

At a glance

Building permit
Required; San Juan County administers adopted building codes12
Zoning
Yes; County Planning provides zoning compliance34
Septic (OWTS)
A permit is required; La Plata County Public Health handles inspections76
RV living
Not confirmed; ask County Planning before occupying an RV on private land3
Tiny home
State approval and compliance with local zoning are required for long-term living8
Owner-builder exemption
No exemption was confirmed; ask the Building Department9
Well permit
Required from the Colorado Division of Water Resources for a new groundwater well10
Conventional septic soils
Only 0.2% of soils lack severe conventional drain-field limitations11

Who to call

Building permits

San Juan County Building Department

Building permits, building-code administration and inspection scheduling in San Juan County

970.946.9031

Planning & zoning

San Juan County Planning

Land-use review, zoning compliance, addressing, sign permits and nonresidential site-development administration

[email protected]

1557 Greene St, PO Box 466, Silverton CO 81433

Septic permits

La Plata County Public Health

OWTS inspections for San Juan County properties

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 San Juan County, Colorado?

Yes. San Juan County requires a building permit and has a Building Department that administers and enforces the building codes adopted by the county12. A county permit is the document authorizing the specified work, and the department publishes building application forms and inspection-request instructions12. The official material does not say that every imaginable project needs a permit, so owners planning a repair, small accessory structure or agricultural building should describe the exact scope to the Building Department before starting work1. No explicit owner-builder exemption was confirmed on county sources, so doing the labor yourself should not be treated as an exemption from permit review9.

Who issues San Juan County building permits, and how do you reach them?

The San Juan County Building Department handles building permits, administers adopted codes and schedules building inspections122. Call 970.946.9031 for information or to schedule an inspection, and have the permit number, legal description, job address and requested inspection type ready12. San Juan County Planning is the separate first stop for land-use and zoning review; the office evaluates proposals, provides zoning compliance, handles addressing and publishes the county's development applications1314. Planning can be reached at [email protected] or at 1557 Greene St, PO Box 466, Silverton CO 8143313. For a project involving both land-use approval and construction, contact Planning before submitting final building documents so the proposed use and site layout are reviewed in the right order14.

Does San Juan County have zoning?

Yes. San Juan County Planning evaluates land-use proposals for conformance with county regulations and provides zoning compliance34. The Planning Commission reviews land development, subdivisions, planned unit developments, conditional-use permits and rezones before making recommendations to the Board of County Commissioners15. The county publishes a property-development planning packet, land-use permit application, driveway permit application and improvement-permit application14. The available material does not confirm a single countywide minimum lot size, setback, lot-coverage limit or building-height limit; ask Planning for the parcel's zoning designation and the standards that apply to that site3. That parcel check matters before choosing a house footprint, driveway, RV location or manufactured home because county zoning is active rather than absent4.

How do septic permits work in San Juan County?

Colorado requires an OWTS permit before a person constructs, alters, installs or uses an onsite wastewater system for a structure not served by a sewage treatment works7. San Juan County directs property owners to La Plata County Public Health for OWTS inspections, although the county page does not establish which office performs every permitting function616. State law requires a final inspection after permitted work is complete and before the system is used17. Site feasibility deserves early attention: only 0.2% of San Juan County soils are rated without severe limitations for a conventional septic drain field11. That soil rating does not make construction impossible, but it supports budgeting for a site evaluation and potentially an engineered system11. A building outside sewer service cannot receive construction approval until the local public health agency has issued the OWTS permit5.

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

We could not confirm a San Juan County rule allowing long-term RV occupancy or temporary camping on private land, so ask County Planning about the parcel, duration and utility arrangement before moving an RV onto the site313. Colorado's state-park camping rules do not answer whether an owner may occupy an RV on private county land18. A tiny home intended for long-term living has a clearer state path: plans must be approved by the Colorado Division of Housing before construction, the unit must meet applicable state standards and local zoning, and certification is tied to its installation site8. Manufactured homes likewise may be installed only where local zoning allows and remain subject to state installation requirements19. Neither state approval nor wheels bypasses San Juan County zoning review38.

Building a home in San Juan County: the steps, in order

  1. Ask San Juan County Planning to identify the parcel's zoning and required land-use, improvement or driveway applications1314.
  1. Confirm legal access and apply to San Juan County for a county-road driveway permit when Planning says the approach requires one; direct access to a state highway requires a CDOT access permit1420.
  1. Establish water: every new Colorado groundwater well requires a Division of Water Resources permit, subject to statutory and basin-specific conditions10.
  1. If sewer is unavailable, complete the OWTS design and obtain the local public-health permit before building approval5.
  1. Submit the county building application and approved plans to the Building Department112.
  1. Schedule required building inspections with the county and obtain the final OWTS inspection before using the system1217.

What should you check before buying land in San Juan County?

Start with buildable area, legal access, zoning and wastewater rather than acreage alone. Only 24.7% of San Juan County land has a slope of 15% or less, while 90.1% is federal land, so a private parcel can face steep terrain and access constraints2122. Conventional septic suitability is unusually limited, with only 0.2% of soils rated without severe drain-field limitations11. Confirm whether the parcel has sewer service or needs an OWTS, and confirm a lawful water source; every new groundwater well requires a state permit510. Ask Planning about zoning, hazards, driveway review and any prior subdivision approval because county applications address zoning compatibility, access and land development1415. Property taxes are comparatively modest in the dataset, with a 0.3% effective rate and a $1,195 median annual bill, but parcel-specific assessments can differ2324.

Watch-outs

  • San Juan County has not published a confirmed owner-builder exemption in the available county material; ask the Building Department before assuming self-performed work avoids a permit912.
  • Only 0.2% of county soils are rated without severe limitations for a conventional drain field, so investigate OWTS feasibility before treating a parcel as buildable11.
  • Long-term RV occupancy, temporary private-land camping, setbacks and minimum dwelling size were not confirmed; get parcel-specific answers from San Juan County Planning313.

Sources

  1. San Juan County Colorado - Building Department (2026 county census)
  2. Building | San Juan County Colorado, quoted and re-checked
  3. Planning | San Juan County Colorado (2026 county census)
  4. Planning | San Juan County Colorado, quoted and re-checked
  5. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  6. Environmental Health | San Juan County Colorado, quoted and re-checked
  7. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  8. Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
  9. (2026 county census)
  10. Water Administration (Colorado statewide rule), quoted and re-checked
  11. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  12. San Juan County Building Department (sanjuancounty.colorado.gov)
  13. San Juan County Planning (sanjuancounty.colorado.gov)
  14. Planning | San Juan County Colorado, quoted and re-checked
  15. Planning | San Juan County Colorado, quoted and re-checked
  16. La Plata County Public Health (sanjuancounty.colorado.gov)
  17. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  18. Title 33 - Parks and Wildlife - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  19. Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
  20. Access Permits | Frequently Asked Questions (Colorado statewide rule), quoted and re-checked
  21. Share of land at 15% slope or less: Bolthole Index county data
  22. Federal land share: Bolthole Index county data
  23. Effective property tax rate: Bolthole Index county data
  24. Median property tax bill: Bolthole Index county data

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.

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County locator

San Juan County in Colorado

38
County map
San Juan County highlighted among the Colorado counties · colored by Index score

How San Juan County scores

Seclusion9146% ev.
Self-Sufficiency1393% ev.
Admin Boringness4190% ev.
Durability32100% ev.
Property Autonomy75100% ev.
Carry Cost7696% ev.

Evidence strength: 85%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$558kTypical home
0.3%Property tax
$3,273Land / acre
39.1"Annual rain
26.9% of yrsSevere drought
0 / yr (+0)Mid-century 100°F days
18.6 daysMid-century dry spell
1.75" (+9.7%)Mid-century 1-day rain
1.3×Wildfire change factor
100%Forward climate coverage
$1,450Home insurance / yr
5.5% / yrInsurance growth
1.32%Nonrenewal rate
single ZIP shrunk to state medianInsurance basis
306People within 30 min
109,738People within 2 hr
5,946Radius comparison (15 mi)
2.1People / sq mi
90.1%Federal land
24.7%Land at 15% slope or less
0.2%Septic soil without severe limits
345 acWorkable land screen
60.4%Wooded land
46 tonsBiomass / forest ac
35.5°FAvg temp

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Answers from the rulebook for San Juan County

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

San Juan County rules

  • Building code adoptedAdopted

    Building codes administered and enforced by San Juan County.

    • The page does not identify the specific code editions.
    “The Building Department works to assure the life, health, and safety of the public by regulating the construction, use and occupancy of buildings, through the administration and enforcement of Building Codes adopted in San Juan County and to maintain an adequate record system, as required by law.”
  • County-wide zoningPresent (with conditions)

    County land-use and zoning administration in San Juan County.

    • Planning staff evaluates land-use proposals for conformance with county regulations and comprehensive master-plan goals and policies.
    • The page identifies zoning compliance and site-development administration for nonresidential construction.
    “The division also handles addressing for the County, provides zoning compliance, issues sign permits, and provides site development administration for nonresidential construction.”
  • Who permits septicLocal (with conditions)

    OWTS inspections serving San Juan County properties, as directed by the San Juan County environmental-health page.

    • The county page directs applicants to La Plata County Public Health for OWTS inspections.
    • The page does not establish the full permitting authority or whether all OWTS functions are delegated.
    “Contact La Plata County Public Health for OWTS inspections”
  • Subdividing landRegulated (with conditions)

    Subdivision and land-development proposals reviewed under San Juan County planning processes.

    • The Planning Commission reviews and recommends to the Board of County Commissioners on land development, subdivisions, planned unit developments, conditional-use permits, and rezones.
    “This seven-member board reviews and recommends to the Board of County Commissioners on Land Development, Code Amendments, Subdivisions, Planned Unit Developments, Conditional Use Permits, and Rezones.”
  • Permit processPublished (with conditions)

    County planning and building permit process information.

    • The planning page publishes a property-development planning packet, land-use permit application, driveway permit application, and improvement-permit application.
    • The building page publishes building application forms and inspection-request instructions.
    “Property Development Planning Packet (including checklist, improvement permit application, and Chapters 3 & 4 of the Land Use Regulations defning the process and requirements)”

Colorado rules that apply here

  • Building permitRequired

    Construction, including adding previously unlicensed space to a Health Facility license, or operational permits for a Colorado-licensed Health Facility located in a jurisdiction with no local Building Department.

    • The Division is responsible for issuing the building permit when no local Building Department exists.
    • Limited Scope Project permits may be used instead of an individual Building, Fire, or Life Safety Code permit for projects identified by the Division.
    • Permit issuance is contingent upon review and approval by the Fire Code Official.
    • The determination of when a building permit is required is based on International Building Code Section 105 requirements, except Sections 105.1.1 and 105.1.2.
    • Substantial changes to the project scope, including adding square footage, require a new permit application.
    • Once all corrections identified through code review are satisfactorily addressed, the Division will issue the permit.

    building permit determination: International Building Code Section 105, except Sections 105.1.1 and 105.1.2 (Substantial changes to project scope require a new permit application.)

    “Under these circumstances, the Division will issue the applicable Building Permits and associated Certificates of Occupancy”
    One more reviewed finding on this topic
    • Limited — Construction, renovation, emergency, cash-funded, or in-house-funded projects involving Colorado state buildings and administered through the Department of Personnel and Administration/Office of the State Architect.
      “State Buildings Program (SBP) is responsible for establishing minimum building codes for all construction by state agencies [...] Colorado has no statewide building code”
  • InspectionsRequired

    All reviewed Colorado State Buildings Program construction projects subject to state building-code compliance review.

    • The policy states that all reviewed construction projects are inspected for building-code compliance.
    • Required inspections are identified on the Building Inspection Record and may include building, special, fire, plumbing, electrical, boiler, elevator, and health-department inspections as applicable.
    • Local fire districts and other state authorities may have separate inspection responsibilities.
    • The policy applies to state buildings and state projects, not uniformly to every private project in Colorado.
    “All reviewed construction projects shall be inspected for building code compliance.”
  • Building heightDistrict specific (with conditions)

    Municipal zoning districts in Colorado where the municipality adopts building-height or story regulations.

    • The applicable height or story limit is determined by the municipality's zoning regulations and district classification.
    • The statute provides authority but no statewide numeric height limit.
    • Height restrictions do not apply to existing buildings under the cited municipal zoning authority, except as stated for new growth of vegetation.

    building height or number of stories: local regulation (No statewide numeric limit specified)

    “the governing body of each municipality is empowered to regulate and restrict the height, number of stories, and size of buildings and other structures”
  • Tiny homesAllowed (with conditions)

    Colorado Division of Housing-regulated tiny homes intended for residential occupancy and long-term living.

    • Plans must be submitted to the Colorado Division of Housing for approval before construction of the units.
    • The unit must satisfy applicable Colorado-adopted codes and standards and local zoning requirements.
    • Tiny home units are certified for the specific site where installed; relocation to another Colorado site requires the applicable design criteria, and design differences require revisions.

    foundation types: permanent or temporary

    “Tiny homes are approved for long term living”
  • Manufactured homesAllowed (with conditions)

    Installation and resulting residential use of HUD-code manufactured homes and mobile homes in Colorado, subject to Colorado Division of Housing requirements and local zoning or building requirements.

    • HUD homes must be certified by the applicable State Administrative Agent for installation in Colorado; imported units are monitored by the State Administrative Agent of the state from which they are imported, rather than necessarily by Colorado's SAA.
    • A HUD home may be installed anywhere in Colorado only where local zoning allows it.
    • Local jurisdictions may require site mitigation to meet local wind and snow loads, but the mitigation cannot directly affect or change the construction of the home itself.
    • The Division of Housing regulates installation and installation inspections for HUD homes; mobile-home foundation and structural construction requirements are regulated by local jurisdictions with active building departments.
    • The state minimum HUD design criteria listed by the source are Wind Zone 1, Thermal Zone 3, and Middle Roof Load Zone (30 psf).

    wind zone: 1 zone · thermal zone: 3 zone · roof load zone: 30 psf (Middle Zone)

    “HUD homes [...] can be installed anywhere in Colorado as long as the local zoning allows for it.”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling unit as an accessory use to a single-unit detached dwelling in a Colorado subject jurisdiction where single-unit detached dwellings are allowed.

    • The rule applies to a subject jurisdiction: either a municipality with a population of at least 1,000 within a metropolitan planning organization, or the portion of a county within a census-designated place of at least 40,000 people that is also within a metropolitan planning organization.
    • The subject jurisdiction must allow the ADU through an administrative approval process.
    • The rule applies on or after June 30, 2025.
    • The state requirement does not establish that every Colorado municipality or county area is a subject jurisdiction.

    maximum required ADUs per single-unit detached dwelling: 1 unit · effective date: >= 2025-06-30 · qualifying municipality population: >= 1000 persons (municipality must also be within a metropolitan planning organization) · qualifying census-designated-place population: >= 40000 persons (county portion must also be within a metropolitan planning organization)

    “Section 1 requires a subject jurisdiction, on or after June 30, 2025, to allow, subject to an administrative approval process, one accessory dwelling unit”
  • Septic permitRequired

    Construction, alteration, installation, repair, or use of an OWTS statewide when the building or structure is not serviced by a sewage treatment works.

    • The permit is issued by the applicable local public health agency under local board-of-health rules.
    • A person may not construct, alter, install, or permit use of an OWTS without first applying for and receiving the required permit.
    • Local boards of health may prohibit OWTS permits in defined areas where additional systems may create a public-health or water-quality hazard.
    “Constructs, alters, installs, or permits the use of any on-site wastewater treatment system without first applying for and receiving a permit as required under this article;”
  • Septic inspectionRequired

    OWTS construction, installation, alteration, or repair statewide before the system is placed in use, plus operating inspections when authorized under applicable rules.

    • A final inspection must occur after permitted work is completed and before the system is placed in use.
    • The local public health agency or its designated professional engineer determines compliance with the permit, statute, and applicable rules.
    • For a building not serviced by a sewage treatment works, an occupancy permit requires final OWTS inspection and local agency approval.
    “Final inspection of a system to be made by the local public health agency or its designated professional engineer after construction, installation, alteration, or repair work under a permit has been completed, but before the system is placed in use, to determine that the work has been performed in accordance with the permit and that the system is in compliance with this article and the rules adopted under this article;”
  • Off-grid sanitationLimited

    Sanitation for dwellings and occupied structures statewide that is provided without connection to a sewage treatment works.

    • The structure must have adequate facilities for sanitary disposal of sewage.
    • An OWTS may be used subject to applicable permit, inspection, construction, installation, alteration, and use requirements.
    • Construction of new cesspools is prohibited.
    • Septage removed during maintenance or cleaning must be disposed of at an approved site and in an approved manner.
    “No person shall construct or maintain any dwelling or other occupied structure that is not equipped with adequate facilities for the sanitary disposal of sewage.”
  • Well permitRequired

    Every new groundwater-diverting well in Colorado, including residential wells, subject to statutory exemptions and basin-specific rules.

    • The Division of Water Resources administers groundwater permitting and issues permits.
    • Applicants must complete the appropriate application and pay the associated fee.
    • Statutory exemptions and additional Denver Basin or Designated Basin rules may affect the requirement or permit conditions.
    • In many areas, a well may also require an augmentation plan if its priority is not sufficient to divert in priority.

    complete-application review time: <= 49 days (DWR states review of complete new and replacement applications may take up to 49 days)

    “Every new well in the state that diverts groundwater must have a well permit.”
  • Mandatory utility hookupConditional

    Residential or other occupied structures statewide that are not serviced by a sewage treatment works.

    • Colorado law conditions building and occupancy permitting on either service by a sewage treatment works or an approved OWTS process.
    • If the structure is not serviced by a sewage treatment works, the local public health agency must issue the OWTS permit before building construction or remodeling approval, and must complete a final inspection and approve the installation before occupancy approval.
    • This claim does not establish a universal statewide mandate to connect to a particular municipal water or sewer provider.
    “A permit to construct or remodel a building or structure that is not serviced by a sewage treatment works until the local public health agency has issued a permit for an on-site wastewater treatment system;”
  • Driveway accessRequired

    Direct residential access from a property to a Colorado state highway, and construction, relocation, closure, modification, or change in use of access points to state highways.

    • Direct access from a house to a state highway requires an access permit.
    • Some state-highway access categories require access from a lesser street or by easement from a parent parcel whenever possible.
    • Level 1 permits cover single-family residential/agricultural permits; Level 2 covers commercial property and developments exceeding 20 vehicular trips per day without roadway improvements; Level 3 covers commercial property requiring roadway improvements.
    • Level 1 fees are $50, Level 2 fees are $100, and Level 3 fees are $300.
    • No fees are charged to local government applications or political subdivisions.
    • There is no upfront charge to review an Access Permit Application.
    • The permittee is responsible for roadway-improvement costs required with issuance of an access permit.
    • Performance-bond requirements apply only to private projects; local agencies are not required to comply, although CDOT regions may require a bond at their discretion.

    Level 1 access permit fee: 50 USD (Single-family residential/agricultural permits) · Level 2 access permit fee: 100 USD (Commercial property permits and developments exceeding 20 vehicular trips per day without roadway improvements) · Level 3 access permit fee: 300 USD (Commercial property permits requiring roadway improvements)

    “If you want the house to have direct access off of the state highway, then you will need an access permit.”
  • Building in a floodplainRequired

    Development in floodplain areas subject to Colorado floodplain-management requirements, and state-owned land in counties or municipalities that do not participate in the National Flood Insurance Program.

    • Local floodplain regulations must equal or exceed FEMA National Flood Insurance Program minimum design and construction criteria.
    • Local floodplain regulations must comply with Colorado Water Conservation Board rules and regulations for regulatory floodplains.
    • The state program applies to development on state-owned land in counties and municipalities that do not participate in the National Flood Insurance Program.
    “Local government floodplain management regulations for development in floodplain areas must equal or exceed the federal emergency management agency's national flood insurance program's (national flood insurance program) minimum design and construction criteria and must comply with the Colorado water conservation board's (CWCB) rules and regulations for regulatory floodplains in Colorado.”
  • Short-term rentalsLimited

    Short-term rentals statewide, defined in the cited official source as lodging-unit rentals for fewer than 30 days.

    • There is no statewide STR regulatory scheme.
    • Boards of county commissioners may license and regulate STR owners or agencies and set license fees, terms, issuance, and revocation procedures.
    • Home-rule municipalities and private contracts or homeowners' association covenants may impose additional restrictions.

    maximum rental duration for STR definition: < 30 days

    “There are no statewide regulations regarding STRs. As established through House Bill 20-1093, state law allows for boards of county commissioners (BOCCs) to license and regulate an owner or owner’s agency and to fix the fees, terms, and manner for issuing and revoking licenses.”
  • Campground & park staysAllowed (with conditions)

    Temporary overnight camping, including parking a motor home or traveler, on land and water under the control of Colorado Parks and Wildlife, including state parks and state recreation areas.

    • The source addresses lands and waters under the control of the Division of Parks and Wildlife, not all public or private land statewide.
    • Camping includes parking a motor vehicle, motor home, or traveler for the apparent purpose of overnight occupancy.
    • A commission-issued permit may be required; the statute defines permits to include campground permits and electrical hookup permits.
    • The state may charge fees for required passes or permits for use of any state park or state recreation area where supervision, maintenance, or specified facilities warrant a fee.

    overnight occupancy: true (Camping definition includes the parking of a motor vehicle, motor home, or traveler for the apparent purpose of overnight occupancy.) · permit types: campground permits; electrical hookup permits

    “Develop state parks and state recreation areas suitable for such recreational activities as camping, [...] "Camping" means [...] the parking of a motor vehicle, motor home, or traveler”
  • county zoning authorityGeneral

    Colorado counties adopting zoning plans for all or any part of unincorporated territory.

    • The county planning commission may make the zoning plan; in a county having a county planning commission, it must do so upon order by the board of county commissioners.
    • The zoning plan may regulate districts or zones, including building location, height, bulk, size, lot coverage, lot size, open spaces, population density, building and land uses, and access to sunlight for solar energy devices.
    • The plan may include regulations for uses on or along storm or floodwater runoff channels or basins only when the channel or basin has been designated and approved by the Colorado water conservation board, to lessen or avoid hazards from storm or floodwaters.
    • The statute applies to unincorporated territory and does not describe incorporated cities or towns as within this county zoning grant.
    “zoning all or any part of the unincorporated territory within such county”
  • county building authorityGeneral

    Colorado counties adopting and enforcing building codes and requiring building permits in designated unincorporated areas.

    • A board of county commissioners may adopt a building code in all or part of the county, but the area must not be within the limits of an incorporated city or town.
    • Buildings or structures used solely to shelter agricultural implements, farm products, livestock, or poultry may be excepted from the building code and permit requirement.
    • Before adoption, the county planning commission may designate part or all of the county for the building code upon request from the board of county commissioners; the board must hold a public hearing and publish notice once weekly for four consecutive weeks.
    • After adoption of the building code, construction, reconstruction, alteration, or remodeling in the designated area requires a building permit, except for the agricultural-shelter exception.
    • The board must fix a reasonable schedule of building-permit fees; no permit fee may be charged unless a qualified inspector actually performs an inspection.
    • Plans must conform to the building code, and plans and specifications generally must bear the seal of a Colorado-licensed architect or engineer unless exempted by section 12-120-403.
    • Every county adopting or updating a building code must adopt and enforce an energy code meeting or exceeding one of the three most recent International Energy Conservation Code versions under section 30-28-211.
    • The 2025 amendment to section 30-28-204 is effective January 1, 2026 and adds accessibility requirements for substantially amended or updated county building codes, with an exception for compliant one- and two-family dwellings and townhomes.
    “A board of county commissioners is authorized to adopt ordinances and a building code”

Still unanswered

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

  • Owner-builder exemption — Owner-builder exemptions from county building requirements.
  • Certificate of occupancy — Certificates of occupancy for buildings in San Juan County.
  • Zoning districts — Published zoning-district map or district schedule for San Juan County.
  • Minimum dwelling size — Minimum dwelling size requirements in San Juan County.
  • Minimum lot size — Minimum lot size requirements in San Juan County.
5 more unanswered
  • Setbacks
  • Lot coverage
  • Living in an RV
  • Camping on your land
  • Agricultural exemption

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.

Living off-grid in San Juan County, Colorado

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

San Juan County scores 38/100 on the Bolthole Index, a marginal county profile. Its strengths: deep seclusion — about 306 people within a 30-minute drive and manageable long-term carry cost. Watch-outs: workable self-sufficiency basics (39.1″/yr rainfall) and elevated current hazard exposure.

Do you need a building permit in San Juan County, Colorado?

San Juan County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by San Juan County Environmental Health (OWTS permitting administered with La Plata County Public Health). 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.

How much does land cost in San Juan County, Colorado?

Land in San Juan County runs about $3,273 per acre, based on the latest county data.

What is the water situation in San Juan County?

San Juan County gets about 39.1" of rain a year, with severe drought in roughly 26.9% of years.

How remote is San Juan County?

A representative private-land location has about 306 people within a 30-minute drive and 109,738 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

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

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How San Juan compares in Colorado

Compare side-by-side →See all 64 Colorado counties ranked →