Bolthole Index

Carbon County, Utah

Building permits, zoning and land rules in Carbon County, Utah

62Index Score / 100
#1 of 29 in Utah

Carbon County, Utah requires a building permit before most construction, alteration, demolition, occupancy changes, and regulated trade work begins.1 The Carbon County Building Department handles permits and inspections, while unincorporated parcels also go through county zoning review.23 Land without public sewer needs septic approval and a permit from the Southeast Utah Health Department.4

At a glance

Building permit
Required for most construction and regulated trade work1
Zoning
County zoning applies in unincorporated Carbon County3
Septic
Health Department approval and permit required where sewer is unavailable45
RV living
Private-land occupancy not confirmed; ask Planning & Zoning6
Tiny home
Parcel-specific zoning permission not confirmed; ask Planning & Zoning76
Owner-builder
Allowed for qualifying personal, noncommercial projects with county certification8
Well
A water right and State Engineer permission are required before drilling9

Who to call

Building permits

Carbon County Building Department

Building permits and inspections in Carbon County

(435) 636-3260

[email protected]

751 E 100 N Ste 2600 (Second Floor) Price, UT 84501

Planning & zoning

Carbon County Planning & Zoning

Subdivision, planning, and zoning permit applications

(435) 636-3260

[email protected]

Septic permits

Southeast Utah Health Department

Onsite wastewater site review, design approval, permits, and inspections

435-637-3671

149 East 100 South PO Box 800 Price, UT 84501

Roads & driveways

Carbon County Road Department

County-road maintenance and road encroachment permits

(435) 636-3268

[email protected]

2660 Airport Road Price, UT 84501

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 Carbon County, Utah?

Yes. Carbon County requires the owner or authorized agent to obtain a permit before covered construction, enlargement, alteration, repair, movement, demolition, occupancy changes, or regulated electrical, gas, mechanical, and plumbing work begins.1 Listed exemptions include qualifying agricultural buildings, residential sheds and structures under 200 square feet, fences no higher than 7 feet, retaining walls no higher than 4 feet, sidewalks, driveways, finish work, shallow prefabricated pools, playground equipment, and window awnings.1

A driveway may be exempt from the building permit while still requiring a separate Class 1 Road Encroachment Permit where it connects to a county road.10 Qualifying agricultural structures must be used only for agriculture and not human occupancy, and plumbing, electrical, or mechanical work can still require permits.11 Ask the Building Department before relying on any exemption.2

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

The Carbon County Building Department issues building permits and conducts inspections from the County Building & Planning Office in Price.2 Applications may be made online or in person, and the county requires owner and project details, the parcel number, contractor information, an owner-builder form when applicable, a project description, a complete PDF plan set, and supporting documents.12 Residential review can take up to 14 business days and commercial review up to 21 business days after all required documents arrive.12

New-construction and solar applications carry a nonrefundable $250 deposit credited toward the permit.13 Work in East Carbon, Helper, Price City, Wellington, or Scofield Town requires proof of city zoning approval; an application for unincorporated land instead needs a signed Road Encroachment Agreement submitted to the County Road Shop.1

Does Carbon County, Utah have zoning?

Yes. Carbon County Planning & Zoning administers land-use rules for property in the unincorporated portions of Carbon County, and the answer for a proposed use depends on the parcel location, zoning district, and whether that use is allowed.3 The department reviews subdivision, planning, and zoning permit applications and issues them after approval.6 Some uses require a conditional-use permit, so contact Planning & Zoning with the parcel number and proposed use before designing the project.3

Carbon County publishes district-specific lot-size and building-size requirements rather than one confirmed countywide minimum lot size.14 A manufactured home cannot be excluded from a zone where a single-family residence is permitted, but it must have a compliant permanent foundation and meet the same applicable land-use ordinances, building codes, and restrictive covenants.15

How do septic permits work in Carbon County?

Where public sewer is unavailable, Carbon County requires individual-wastewater approval and a septic permit from the Southeast Utah Health Department.4 Start with a site and soil evaluation by a Level 1 or higher Onsite Wastewater Professional, submit the permit application, and obtain Health Department approval of the design before installation.5 The approved design must remain at the site during installation.5

Do not cover system components before the Health Department's final inspection.16 The tank must be filled to the distribution-box outlet 24 hours before that inspection, and the permit fee must be paid first.16 Only about 9.5% of county soils are rated without severe limitations for a conventional drain field, so the soil evaluation is a major feasibility checkpoint before buying or choosing a homesite.17

Can you live in an RV or tiny home in Carbon County?

Carbon County zoning applies to unincorporated parcels, but the available county material does not confirm a countywide rule for living long-term in an RV on private land or for using a tiny home as a dwelling. Ask Carbon County Planning & Zoning about the specific parcel, zoning district, duration, utility plan, and whether the proposal needs conditional-use approval.6

Utah's RV-park rule does not create permission to live in an RV on any private parcel; it governs temporary living quarters in qualifying RV parks and requires compliance with local zoning, building, health, fire, and wastewater rules.18 Utah likewise allows a qualifying tiny house in an RV park only under the RV-park framework, while permission outside a park depends on local land-use classification.7 Do not treat a wheeled tiny house, manufactured home, or internal accessory dwelling as interchangeable categories.

Building a home in Carbon County: what are the steps?

  1. Ask Carbon County Planning & Zoning to confirm the parcel's district, allowed residential use, setbacks, lot requirements, and any conditional-use review.3
  2. Confirm legal parcel status; a property split requires a subdivision plat or agricultural waiver, and the county will not issue a home permit on a divided parcel until the plat is filed.19
  3. Secure water and wastewater approvals: show paid water-connection fees where served, or obtain State Engineer approval for a spring or well; show sewer approval where served, or obtain Health Department septic approval.2021
  4. Submit the complete building application and plans, plus the owner-builder certification if you qualify and will act as your own contractor.128
  5. For unincorporated land, send the signed Road Encroachment Agreement to the County Road Shop before permit approval.1
  6. Obtain the permit before work begins and schedule required inspections.1

What should you check before buying land in Carbon County?

Check the zoning district, legal access, parcel-division history, water source, sewer availability, and septic feasibility before closing. Carbon County requires a county-road encroachment permit for a driveway attaching to a county road, while a driveway connecting to a state highway requires a UDOT conditional access permit.1022 A domestic well needs a valid water right and State Engineer permission before drilling.9

Carbon County averages about 14.6 inches of precipitation a year, and severe drought has occurred in about 31.3% of years, making a documented water source especially important.2324 About 36.5% of the county has slopes of 15% or less, and only about 9.5% of soils lack severe conventional-drain-field limitations, so verify the actual building envelope and soil evaluation rather than relying on acreage alone.2517 Ask Building & Planning which office reviews floodplain development for the parcel because a county development rule was not confirmed.6

Watch-outs

  • Starting covered work before receiving the building permit can trigger a penalty and fine.1
  • A building-permit exemption for the driveway does not replace the county-road encroachment permit when the driveway connects to a county road.10
  • Long-term RV occupancy, temporary camping, tiny-home occupancy, minimum dwelling size, and floodplain development requirements remain parcel questions for Carbon County Planning & Zoning.6

Sources

  1. Building Permits – Carbon County Utah, quoted and re-checked
  2. Carbon County Building Department (carbon.utah.gov)
  3. Land Use Applications – Carbon County Utah, quoted and re-checked
  4. Building Permits – Carbon County Utah, quoted and re-checked
  5. Building Permits – Carbon County Utah, quoted and re-checked
  6. Carbon County Planning & Zoning (carbon.utah.gov)
  7. OPRO Accessory Dwellings (ADU's) and other dwelling types (Utah statewide rule), quoted and re-checked
  8. Building Applications / Agreements – Carbon County Utah, quoted and re-checked
  9. Water Well Drilling Information, quoted and re-checked
  10. Road Encroachment Permits – Carbon County Utah, quoted and re-checked
  11. Building Permit Exemption Request – Carbon County Utah, quoted and re-checked
  12. Building Permits – Carbon County Utah, quoted and re-checked
  13. Building Permits – Carbon County Utah, quoted and re-checked
  14. Planning & Zoning – Carbon County Utah, quoted and re-checked
  15. Utah Code Title 17, Chapter 80, quoted and re-checked
  16. Onsite Wastewater Process and Guidance, quoted and re-checked
  17. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  18. Utah Administrative Code Rule R392-301, Recreational Vehicle Parks (Utah statewide rule), quoted and re-checked
  19. Land Use Applications – Carbon County Utah, quoted and re-checked
  20. Building Permits – Carbon County Utah, quoted and re-checked
  21. Building Permits – Carbon County Utah, quoted and re-checked
  22. Conditional Access Permit (Utah statewide rule), quoted and re-checked
  23. Annual precipitation: Bolthole Index county data
  24. Share of years in severe drought: Bolthole Index county data
  25. Share of land at 15% slope or less: 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

Carbon County in Utah

62
County map
Carbon County highlighted among the Utah counties · colored by Index score

How Carbon County scores

Seclusion69100% ev.
Self-Sufficiency39100% ev.
Admin Boringness40100% ev.
Durability64100% ev.
Property Autonomy60100% ev.
Carry Cost83100% 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 →

$284kTypical home
0.6%Property tax
$2,617Land / acre
14.6"Annual rain
31.3% of yrsSevere drought
1.2 / yr (+1.2)Mid-century 100°F days
28.3 daysMid-century dry spell
1" (+6.7%)Mid-century 1-day rain
1.18×Wildfire change factor
100%Forward climate coverage
$944Home insurance / yr
4.3% / yrInsurance growth
1.4%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,607Radius comparison (15 mi)
13.9People / sq mi
48.2%Federal land
36.5%Land at 15% slope or less
9.5%Septic soil without severe limits
73,707 acWorkable land screen
40.5%Wooded land
14.5 tonsBiomass / forest ac
45.2°FAvg temp

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Answers from the rulebook for Carbon County

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

Carbon County rules

  • Building permitRequired

    Construction, enlargement, alteration, repair, movement, demolition, occupancy change, and regulated electrical, gas, mechanical, or plumbing work in Carbon County; the County Building Department states it serves all unincorporated and incorporated areas.

    • The owner or authorized agent must apply to the building department and obtain the required permit before covered work begins.
    • Exemptions listed by the County include agricultural buildings meeting Utah Agricultural Waiver requirements; residential sheds and structures under 200 square feet; fences not over 7 feet high; retaining walls not over 4 feet high from bottom of footing to top of wall; sidewalks and driveways; painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work; prefabricated swimming pools less than 24 inches deep; swings and playground equipment; and window awnings.
    • Failure to obtain a permit before beginning work results in a penalty and fine.
    • Permit reviews can take up to 14 business days for residential projects and 21 business days for commercial projects after required documents are received.
    • New construction and solar building permit applications require a non-refundable $250 deposit as of January 1, 2025, applied as a credit toward the permit.
    • Applications in East Carbon, Helper, Price City, Wellington, or Scofield Town require proof of city zoning approval.
    • Unincorporated-area applications also require a signed Road Encroachment Agreement submitted to the County Road Shop.
    • Where an area is not served by sewer, Individual Wastewater septic approval and a permit must be obtained from the Southeast Utah Health District.

    residential permit review time: <= 14 business days (after all required documents are received) · commercial permit review time: <= 21 business days (after all required documents are received) · new construction and solar application deposit: 250 USD (non-refundable; applied as a credit toward the permit; stated as of January 1, 2025)

    “shall first make application to the building department and obtain the required permit.”
  • Owner-builder exemptionConditional

    A property owner serving as their own contractor on a Carbon County construction project.

    • The project must be for personal, non-commercial, and non-public use.
    • The property owner must complete the Owner Builder Certification Agreement to comply with the Construction Trades Licensing Act.
    • The County building permit page requires a signed and notarized Owner/Builder Certification Form if the applicant is a do-it-yourselfer.
    • The owner-builder form does not eliminate the underlying building-permit requirement; the County states that covered work must first obtain the required permit.
    “This form must be completed if a property owner intends to serve as their own contractor on a project that will be used for personal, non-commercial and non-public use.”
  • County-wide zoningPresent (with conditions)

    Zoning and conditional-use regulation for property in the unincorporated portions of Carbon County.

    • The county page expressly limits the land-use application information to property in the unincorporated portions of the County.
    • A proposed use is evaluated by its location, zoning district, and whether the use is allowed.
    • Some land uses require a Conditional Use Permit approved and issued by Carbon County.
    • Conditional-use applications require submission to the Planning Department at least two weeks before the first Tuesday of the month or as required by the Zoning Administrator.
    • The application lists a $300.00 application fee, a 10-day public notice requirement, and additional fee rules based on the engineer’s estimate of project cost.

    conditional use application fee: 300 USD (If the computed fee exceeds $300.00, the additional amount is due before the permit is issued.) · public notice: 10 days

    “This is determined by where the project is to be located, which zoning district it is in, and whether such uses are allowed or not.”
  • Zoning districtsPublished (with conditions)

    Carbon County zoning and development-code administration, including county zoning and mapped municipal zoning layers shown in the county's official GIS service.

    • The county's official planning page states that it maintains and enforces the county zoning and development code.
    • The official GIS zoning service separately lists County Zoning, East Carbon Zoning, Helper Zoning, Price Zoning, Scofield Zoning, and Wellington Zoning; incorporated municipalities may administer their own local rules.
    • Use-specific permissions may require a conditional-use permit depending on the zoning district and proposed use.
    “Layers: County Zoning (3) East Carbon Zoning (4) Helper Zoning (5) Price Zoning (6) Scofield Zoning (7) Wellington Zoning (8)”
  • Minimum lot sizeDistrict specific (with conditions)

    Lot-size requirements for zoning districts in the unincorporated portions of Carbon County.

    • The county states that its zone information chart captures requirements for lot sizes and allowed building sizes.
    • The reviewed page did not provide the numeric lot-size table or identify a single countywide minimum; the applicable zone must be determined for the parcel.
    “The county maintains a zone information chart capturing requirements for lot sizes, and allowed building sizes.”
  • Who permits septicLocal (with conditions)

    Individual wastewater and onsite septic systems serving property in Carbon County where sewer is unavailable

    • Carbon County states that septic approval and a permit must be obtained from the Southeast Utah Health District when an area is not served by sewer.
    • The Health District reviews site and soil evaluations, approves designs, conducts inspections, and issues operating permits.
    • The Health District is a multi-county health district; this claim identifies it as the administering authority for Carbon County septic systems.
    “Onsite wastewater systems are privately owned personal sewer systems that are installed on private land to serve individual homes and businesses in areas where public sewer is not available. A permit and plan design approval is required.”
  • Septic permitRequired

    Individual wastewater systems in Carbon County in areas not served by sewer

    • A septic system permit application is required.
    • A site and soil evaluation must be performed by a Level 1 or higher Onsite Wastewater Professional.
    • Environmental Health staff schedule a site visit and review the evaluation.
    • The onsite wastewater design must be submitted to and approved by the health department before installation begins.
    • The approved design must remain onsite during installation.
    • A final inspection and approval are not completed until the invoice is paid.
    • The 2024 fee schedule lists a Basic Septic Permit as including plan review, final inspection, and permit, with a $354.00 fee plus a $40.00 state fee.

    basic septic permit fee: 354 USD (2024 fee schedule) · state fee: 40 USD (additional fee listed in the 2024 fee schedule)

    “Step 2. Apply for a septic system permit. Submit your application by clicking here.”
  • Septic inspectionRequired

    Onsite wastewater systems in Carbon County regulated by the Southeast Utah Health District

    • Before any onsite system components are covered by barrier material or backfill, the health department must complete a final inspection.
    • The septic tank must be filled to the outlet into the distribution box 24 hours before final inspection.
    • The septic permit fee must be paid before final inspection.
    • The Health District schedules a site visit to verify the site and soil analysis before issuing approval.

    tank fill timing before final inspection: 24 hours (tank must be filled to the outlet into the distribution box)

    “Before any components of the onsite system are covered by barrier material or back fill, a final inspection must be completed by the health department. The septic tank must be filled to the outlet into the distribution box, 24 hours prior to final inspection. The septic permit fee must be paid before final inspection.”
  • Mandatory utility hookupSewer (with conditions)

    Building permit applications for properties in Carbon County requiring sewer connection from Price River Water Improvement District or Scofield Reservoir Special Service District

    • Carbon County requires proof of fees paid for sewer hookup from Price River Water Improvement District or the Scofield Reservoir Special Service District.
    • Where sewer is unavailable, the county requires Southeast Utah Health District approval and a septic permit instead.
    • The cited county pages do not establish that either sewer district serves every Carbon County parcel.
    “Sewer hook-up from PRWID (435-637-6350) or the Scofield Reservoir Special Service District (435) 636-3220 If area is not served by sewer, Individual Wastewater (septic) approval and permit must be obtained from Southeast Utah Health District (435) -637-3671”
    One more reviewed finding on this topic
    • Water (with conditions) — Building permit applications for properties in Carbon County requiring culinary-water connection from Price River Water Improvement District
      “Proof of fees paid: Water connection from PRWID (435) 637-6350 If central culinary water is not available, spring or well approval from Utah State Engineer, (435) 613-3750”
  • Agricultural exemptionConditional

    Agricultural building permit exemption administered through Carbon County’s Building Department under Utah construction-code requirements.

    • The structure must be used solely in conjunction with agricultural use and must not be for human occupancy, or must be no more than 1,500 square feet and used solely for the specified sales described in Utah Code Section 59-12-104(20).
    • Plumbing, electrical, and mechanical permits may still be required.
    • The County Building Department must receive and evaluate the exemption request and will inform the applicant whether the parcel qualifies.
    • The county form asks whether the property is in an Agricultural Protection Area, within a city or town and less than 5 contiguous acres, or within an approved subdivision and less than 2 contiguous acres.
    • Any plumbing, electrical, or mechanical work within or part of the structure requires a building permit.
    • The county’s building-permits page separately lists agricultural buildings meeting Utah Agricultural Waiver requirements as exempt from a building permit.

    maximum structure size for specified sales exemption: <= 1500 square feet (the structure must be used solely for the type of sales described in Utah Code Section 59-12-104(20)) · city or town acreage screening threshold: < 5 contiguous acres · approved subdivision acreage screening threshold: < 2 contiguous acres

    “Except as provided in Subsection (11)(b), a structure used solely in conjunction with agriculture use, and not for human occupancy, or a structure that is no more than 1,500 square feet and used solely for the type of sales described in Subsection 59-12-104(20), is exempt from the requirements of the State Construction Code.”
  • Subdividing landRegulated (with conditions)

    Division of land and subdivision approval in the unincorporated portions of Carbon County.

    • Any property split or division requires a subdivision plat or agricultural waiver to be filed in the County Recorder’s Office.
    • A subdivision plat must be filed before Carbon County will issue a building permit for a home on a divided parcel.
    • Subdivisions up to 9 lots may be approved by the Planning Commission, generally meeting the first Tuesday of each month at 4:30 PM.
    • The application fee is $100 plus $50 per extra lot; the plat review fee is $160 or actual cost per plat review.
    • The application must be submitted at least 2 weeks before the Planning Commission meeting.
    • Final approval and filing or recording generally requires 60 to 90 days before a building permit may be obtained.
    • Agricultural divisions may use an agricultural waiver when the land is taxed as Farmland or Greenbelt and applicable statutory and county conditions are met.

    maximum lots for described Planning Commission process: <= 9 lots · final subdivision application fee: 100 USD (plus $50 per extra lot) · plat review fee: 160 USD (or actual cost per plat review) · advance submission period: >= 2 weeks (before the Planning Commission meeting) · anticipated approval and recording period: 60 to 90 days (before a building permit may be obtained)

    “Under Utah Law and Carbon County Ordinance, anytime a property is split or divided, a subdivision plat or an agricultural waiver must be filed in the Recorder’s office. Even if you are only giving a lot to relatives for a home, a subdivision plat must be filed before Carbon County will issue a building permit for that home.”
  • Driveway accessLimited

    Residential driveways, parking areas, culverts, or other structures connecting to or affecting the shoulder of an existing county roadway.

    • A Class 1 Road Encroachment Permit applies to a driveway attaching to a county road.
    • The county page describes the permit as also covering excavations along, but not within, county roads.
    • Driveways are listed as exempt from a building permit, but a separate road encroachment permit may be required when the county roadway or shoulder is affected.
    “Class 1 Permit- For a driveway attaching to a county road. For excavations along, but not within, county roads. Connection of residential driveways, parking areas, culverts or other structures affecting or altering the shoulder of the existing county roadway.”
  • Permit feesPublished (with conditions)

    New construction and solar building permit applications administered by Carbon County.

    • The $250.00 amount is a non-refundable deposit applied as a credit toward the permit.
    • The page states the fee rule is applicable as of January 1, 2025.
    • The source also publishes a separate $30.00 non-refundable deposit for GIS mapping projects, applied as a credit toward the project.
    • Additional penalty fees may result from beginning work before obtaining the necessary permit.

    building permit application deposit: 250 USD (Non-refundable; applied as a credit toward the permit.) · GIS mapping project deposit: 30 USD (Non-refundable; applied as a credit toward the project.)

    “*As of January 1, 2025: New Construction and Solar building permit applications require a non-refundable $250.00 deposit that will be applied as a credit toward your permit. GIS mapping projects ordered require a $30.00 non-refundable deposit that will be applied as a credit toward your project.”
  • Permit processPublished (with conditions)

    Construction and regulated building-system work in Carbon County, including residential and commercial permit applications.

    • Some exemptions may apply; the county directs applicants to contact the Building Department for specifics.
    • Applications may be completed online or in person at 751 East 100 North, Suite 2600, Price, Utah 84501.
    • Permit reviews can take up to 14 business days for residential projects and 21 business days for commercial projects after all required documents are received.
    • Required materials include owner information, project address, parcel number, contractor license information, owner/builder form if required, project description, complete PDF plan set, and other required documents.
    • For unincorporated Carbon County, a signed Road Encroachment Agreement must also be submitted.
    • If no sewer is available, Individual Wastewater approval and permit must be obtained from Southeast Utah Health District.
    • In East Carbon, Helper, Price City, Wellington, or Scofield Town, proof of city zoning approval is required.

    residential permit review time: <= 14 business days (After all required documents are received.) · commercial permit review time: <= 21 business days (After all required documents are received.)

    “A building permit application may be completed online or in person at the County Building & Planning Office (751 East 100 North, Suite 2600, Price UT, 84501) Permit reviews begin when all required documents are received and can take up to 14 business days to complete for residential projects and 21 business days for commercial projects.”

Utah rules that apply here

  • Building code adoptedAdopted (with conditions)

    Building construction, alteration, remodeling, and repair, and regulation of those activities throughout Utah, subject to the State Construction Code's statewide and local amendments and statutory exceptions.

    • The code version cited is effective July 1, 2026 and is superseded January 1, 2027.
    • The adopted codes operate together with Chapter 3 statewide amendments and Chapter 4 local amendments incorporated into the State Construction Code.
    • Compliance is required when new construction is involved.
    • For an existing building, compliance is required when the owner or agent voluntarily undertakes repair, renovation, remodeling, alteration, enlargement, rehabilitation, conservation, or reconstruction, or changes the character or use in a way that increases occupancy loads, other demands, or safety risks.
    • The 2006 Utah Wildland Urban Interface Code may be adopted by a local compliance agency by local ordinance or similar action as a local amendment.
    • Historic-property plaster standards apply only when the owner receives a government tax subsidy based on historic status, the property is wholly or partially funded by public money, or the property is owned by a government entity.

    International Building Code edition: 2024, including Appendices C and J · International Residential Code edition: 2021, including Appendix AQ · International Plumbing Code edition: 2024 · International Mechanical Code edition: 2024 · International Fuel Gas Code edition: 2024 · National Electrical Code edition: 2023 · International Energy Conservation Code edition: 2024 · International Existing Building Code edition: 2024 · effective date: 2026-07-01 · superseded date: 2027-01-01

    “the following construction codes are incorporated by reference [...] (a) the 2024 edition of the International Building Code, including Appendices C and J”
  • Manufactured homesAllowed (with conditions)

    A manufactured home used as a residence in any Carbon County land-use zone or area where a single-family residence would be permitted.

    • The manufactured home must be attached to a permanent foundation in accordance with plans providing for vertical loads, uplift, lateral forces, and frost protection in compliance with the applicable building code.
    • All appendages, including carports, garages, storage buildings, additions, or alterations, must comply with the applicable building code.
    • The manufactured home must comply with all local land-use ordinances, building codes, and restrictive covenants applicable to a single-family residence within the zone or area.
    • Carbon County may not exclude the manufactured home from a zone or area where a single-family residence would be permitted.
    • Carbon County may not adopt or enforce an ordinance or regulation treating a proposed development that includes manufactured homes differently than one that does not include manufactured homes.
    • Carbon County may not reject a development plan based on the fact that the development is expected to contain manufactured homes.
    “A manufactured home may not be excluded from any land use zone”
  • Accessory dwellingsAllowed (with conditions)

    One internal accessory dwelling unit within a primary dwelling in an area of Carbon County zoned primarily for residential use.

    • The unit must comply with all applicable building, health, and fire codes.
    • A county may prohibit a separate utility meter.
    • A county may require design that does not change the appearance of the primary dwelling as a single-family dwelling.
    • A county may require one additional on-site parking space, subject to the statutory exception when the county land-use ordinance requires four off-street parking spaces, and may require replacement of parking spaces removed from a garage or carport when the unit is created there.
    • A county may prohibit creation within a mobile home.
    • A county may require the owner to obtain a permit or license for renting the unit.
    • A county may prohibit creation in a zoning district covering an area equivalent to 25% or less of the total unincorporated area zoned primarily for residential use, except that newly constructed units with final plat approval dated on or after October 1, 2021, and complying with applicable land-use regulations may not be prohibited under that exception.
    • A county may prohibit creation when the primary dwelling is served by a failing septic tank.
    • A county may prohibit creation when the lot is 6,000 square feet or less.
    • A county may prohibit rental for less than 30 consecutive days.
    • A county may prohibit rental when the unit is in a dwelling not occupied as the owner’s primary residence.
    • The statutory permission is for an internal accessory dwelling unit within a primary dwelling, not every detached or external accessory dwelling structure.

    minimum rental period: >= 30 consecutive days (A county may prohibit rental or offering the rental for a period of less than 30 consecutive days.) · small-lot threshold: <= 6000 square feet (A county may prohibit creation if the lot containing the primary dwelling is 6,000 square feet or less.) · unincorporated residential zoning restriction area: <= 25 percent of total unincorporated area zoned primarily for residential use (Newly constructed units with final plat approval dated on or after October 1, 2021, and complying with applicable land-use regulations may not be prohibited under this exception.)

    “the use of an internal accessory dwelling unit is a permitted use”
  • Well permitRequired

    Water wells, including domestic wells, constructed for property in Carbon County

    • A valid water right must exist before construction and beneficial use of a shallow water well.
    • A Start Card issued after water-right approval is essentially the permit to construct the well.
    • Water well drillers cannot drill unless permission to drill has been obtained from the State Engineer.
    • Water production wells, including domestic wells, are regulated by the State Engineer.
    • Water-well construction must be performed by a currently licensed well driller; shallow water wells may also be constructed by a licensed shallow-water-well constructor.
    • The cited state sources state that the May 10, 2022 statutory change and July 22, 2022 rule revision removed the former exemption for wells 30 feet deep or less.

    former shallow-well exemption: removed (statutory change effective May 10, 2022; revised rules effective July 22, 2022) · non-production well depth regulated by State Engineer: > 30 feet (water production wells are regulated at any depth)

    “A shallow water well owner must have a valid water right to beneficially use groundwater from a shallow water well prior to well construction. [...] A Start Card is issued upon approval of the water right, which is essentially the permit to construct the well.”
  • Campground & park staysLimited

    Temporary RV occupancy in Utah recreational vehicle parks providing temporary living quarters for two or more recreational vehicles.

    • The location must be an RV park as defined by Rule R392-301.
    • The operator must comply with all applicable building, zoning, electrical, health, fire codes and local ordinances.
    • Each RV must satisfy the required data-plate or permanent-label and certification or qualified third-party inspection requirements.
    • Wastewater must comply with the rule, applicable Utah Department of Environmental Quality requirements, local health department regulations, and the local sewer district having jurisdiction.

    minimum number of recreational vehicles: >= 2 vehicles

    “A recreational vehicle or a tiny house may be allowed in a recreational vehicle park only if:”
    One more reviewed finding on this topic
    • Limited — Tiny houses in Utah RV parks; the state source also states that tiny-home permission in a particular area depends on local land-use regulations.
      “A recreational vehicle or a tiny house may be allowed in a recreational vehicle park only if:”
  • county zoning authorityGeneral

    Utah counties may enact land-use controls, including zoning ordinances, for land in unincorporated areas statewide.

    • The authority is subject to Utah Code Section 17-79-101(4) and Section 11-41-103.
    • The statutory grant expressly covers the unincorporated area of a county and a designated mountainous planning district.
    • The quoted provision lists uses, density, open spaces, structures, and buildings among the subjects of permissible land-use controls.
    “Subject to Subsection (4) and Section 11-41-103, to accomplish the purposes of this chapter, a county may enact all ordinances, resolutions, and rules and may enter into other forms of land use controls and development agreements that the county considers necessary or appropriate for the use and development of land within the unincorporated area of the county or a designated mountainous planning district”
  • county building authorityGeneral

    Utah counties may adopt and enforce building regulations and require building permits for construction in unincorporated areas statewide.

    • The general county building-regulation authority applies outside the limits of cities and towns.
    • Local regulations may not conflict with general laws.
    • Under Utah Code Section 17-79-901, erecting, constructing, reconstructing, altering, or changing the use of a building or other structure within a county requires approval of a building permit.
    • A county may not issue a building permit unless the plans fully conform to regulations then in effect.
    • The county permit authority is subject to the State Construction and Fire Codes Act and other statutory limitations.
    “A county may make and enforce within the limits of the county, outside the limits of cities and towns, all local, police, building, and sanitary regulations that are not in conflict with general laws.”

Still unanswered

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

  • Certificate of occupancy — Certificate-of-occupancy requirements for buildings in Carbon County.
  • Minimum dwelling size — Minimum dwelling size for residential structures in unincorporated Carbon County.
  • Lot coverage — Lot-coverage limits for development in unincorporated Carbon County.
  • Living in an RV — Long-term or permanent occupancy of a recreational vehicle on private land in Carbon County, including unincorporated areas.
  • Camping on your land — Temporary camping on private land in Carbon County, including camping in recreational vehicles, trailers, or tents outside an approved campground or RV park.
3 more unanswered
  • Tiny homes
  • Building in a floodplain
  • Short-term rentals

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 Carbon County, Utah

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

Carbon County scores 62/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and sparse surroundings — about 1,607 people within 15 miles. Watch-outs: weak self-sufficiency basics: only 14.6″ of rain a year, in severe drought 31.3% of years and more administrative friction around building and land use.

Do you need a building permit in Carbon County, Utah?

Carbon County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Southeast Utah Health District (Southeast Utah Health Department). 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.

How much does land cost in Carbon County, Utah?

Land in Carbon County runs about $2,617 per acre, based on the latest county data.

What is the water situation in Carbon County?

Carbon County gets about 14.6" of rain a year, with severe drought in roughly 31.3% of years.

How remote is Carbon County?

A typical private-land location has about 1,607 people within 15 miles and 2,738,148 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Carbon compares in Utah

Compare side-by-side →See all 29 Utah counties ranked →