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

At a glance

Building permit

Required for construction in unincorporated Emery County¹

Zoning

County zoning applies outside incorporated city limits²

Septic permit

Permit and plan-design approval required where public sewer is unavailable⁴

Minimum dwelling size

800 square feet outside city limits⁷

Owner-builder

State contractor-license exemption available, but county approvals still apply⁵

Building permit fee

$50 minimum; final fee is based on project valuation⁸

RV or tiny-home living

Confirm the proposed use and zoning district with Building & Zoning²³

Who to call

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 Emery County, Utah?

Yes. Unincorporated Emery County requires a building permit before an owner or agent constructs, enlarges, alters, repairs, moves or demolishes a building¹. Emery County says its local program follows listed international codes with Utah amendments, including the residential and building codes⁹. The county also publishes a minimum building-permit fee of $50; the actual fee is calculated from project valuation on a cost-per-square-foot basis, and plan-check charges may be added for qualifying plans⁸. A state exemption can let a sole owner build a home for the owner's noncommercial, nonpublic use without a contractor license, subject to the state's frequency and worker-licensing conditions, but that exemption does not waive the county permit⁵.

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

Emery County Building & Zoning is the first stop for a project outside incorporated city limits; the office lists (435) 381-3555, [email protected] and 75 East Main, Room 106, Castle Dale³. The same department administers county zoning and conditional-use permits in unincorporated areas². County-permitted construction requires inspections, including applicable electrical, plumbing and mechanical tests, and inspection requests need at least 24 hours' notice¹⁰. Keep work exposed until it has been inspected, because covered work may have to be uncovered and can be condemned¹⁰. A permitted structure cannot be occupied until the final inspection and Certificate of Occupancy, although the county inspection material also allows a temporary occupancy permit from the Building Inspector⁶.

Does Emery County have zoning?

Yes. Emery County administers zoning in unincorporated areas, while property inside a city or town can be subject to that municipality's separate rules². The county's published zoning map includes Agricultural, Industrial, Mountain, and Mining, Grazing & Recreation districts, but the map is labeled unofficial, so confirm the parcel's current district with Building & Zoning¹¹. For dwellings outside city limits, the county permit process sets a minimum size of 800 square feet and requires a plot plan showing the lot, structure location, other structures, easements, applicable drainage patterns and a north arrow⁷. County setback rules generally call for 55 feet from the center of a public road, plus 10-foot side and rear setbacks, with listed alternatives and exceptions for highways, corner lots and certain distant accessory buildings¹².

How do septic permits work in Emery County?

Southeast Utah Health Department is Emery County's local onsite-wastewater authority, and its Castle Dale office lists 435-381-2252 at 25 West Main Street¹³¹⁴. Where public sewer is unavailable, a private onsite system serving an individual home or business requires both a permit and plan-design approval⁴. The county's building process also requires approval of sewage disposal and directs applicants to complete a percolation test before system design⁷. Only about 18.7% of Emery County soils are rated without severe limitations for a conventional septic drain field, so make site feasibility an early purchase contingency rather than assuming a standard system will work¹⁵. The available county material does not confirm a separate inspection sequence for an ordinary onsite system, so ask Southeast Utah Health what field checks and signoffs it will require before installation¹⁴.

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

Emery County zoning applies to unincorporated land, but the available county rules do not establish a countywide answer for living in an RV on a private parcel; ask Building & Zoning about the parcel's district and the proposed duration before relying on an RV during construction²³. Utah's RV-park sanitation rule does not answer private-parcel occupancy: it covers qualifying RVs and tiny houses in recreational vehicle parks and still requires compliance with local zoning and other codes¹⁶¹⁷. A tiny home proposed as a dwelling outside Emery County city limits must also account for the county's 800-square-foot minimum dwelling size, so a unit below that threshold is not established as a permitted standalone dwelling by the county process⁷.

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

1. Confirm that the parcel is outside incorporated city limits and ask Emery County Building & Zoning to verify its zoning district and allowed residential use²³.
2. Prepare the county plot plan and confirm the 800-square-foot dwelling minimum and applicable setbacks before finalizing the design⁷¹².
3. Secure the required culinary-water service letter and obtain sewage-disposal approval through Southeast Utah Health Department⁷¹⁴.
4. Ask whether the driveway needs an encroachment permit from the Emery County Road Department or UDOT; a connection to a state highway requires a UDOT conditional access permit¹⁸¹⁹.
5. Apply for the county building permit and budget at least the $50 minimum plus any applicable plan-check fee⁸.
6. Request required inspections at least 24 hours ahead and leave inspectable work uncovered¹⁰.
7. Do not occupy the structure until final inspection and issuance of the Certificate of Occupancy or an authorized temporary occupancy permit⁶.

What should you check before buying land in Emery County?

Start with buildability: about 60.4% of Emery County land is at a slope of 15% or less, but only about 18.7% of soils avoid severe limitations for a conventional septic drain field²⁰¹⁵. Water planning matters in this dry county, which averages about 9.4 inches of precipitation annually and has experienced severe drought in about 35.1% of years²¹²². Confirm a culinary-water supplier, septic feasibility, the current zoning district and legal road access before closing, because each feeds into the county permit process⁷¹⁸. Federal land accounts for about 82.3% of the county, and population density is about 2.3 people per square mile, so verify boundaries and practical service access rather than judging a parcel only from an online listing²³²⁴. The effective property-tax rate is about 0.6%, with a median annual property-tax bill of about $1,151²⁵²⁶.

Watch-outs

• Emery County's published zoning map is labeled unofficial, so verify the parcel's current zoning district with Building & Zoning before ordering plans or a manufactured home¹¹³.
• An owner-builder exemption concerns contractor licensing only; Emery County's building permit, inspections and occupancy approval still apply⁵⁶.
• A county or UDOT road-encroachment permit may be required depending on the access, so settle driveway approval before assuming a parcel is ready to build¹⁸²⁷.
• Emery County has not confirmed a countywide rule for private-parcel RV occupancy, so ask Building & Zoning about the specific zoning district and proposed use²³.

Sources

1. Emery County Building & Zoning - Building Permit Requirements (2026 county census)
2. Emery County - Building & Zoning Department (2026 county census)
3. Emery County Building & Zoning (emerycounty.com)
4. Onsite Wastewater (Septic), quoted and re-checked
5. Utah Code § 58-55-305, Exemptions from licensure, quoted and re-checked
6. Building Permit Application, quoted and re-checked
7. Permit Process, quoted and re-checked
8. Permit Process, quoted and re-checked
9. Building Permit Requirements, quoted and re-checked
10. Inspections, quoted and re-checked
11. Emery County Zoning Boundaries, quoted and re-checked
12. Permit Process, quoted and re-checked
13. Southeast Utah Health Department - Onsite Wastewater (Septic) (2026 county census)
14. Southeast Utah Health Department, Castle Dale Office (seuhealth.gov)
15. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
16. Utah Administrative Code Rule R392-301, Recreational Vehicle Parks (Utah statewide rule), quoted and re-checked
17. OPRO Accessory Dwellings (ADU's) and other dwelling types (Utah statewide rule), quoted and re-checked
18. Permit Process, quoted and re-checked
19. Conditional Access Permit (Utah statewide rule), quoted and re-checked
20. Share of land at 15% slope or less: Bolthole Index county data
21. Annual precipitation: Bolthole Index county data
22. Share of years in severe drought: Bolthole Index county data
23. Federal land share: Bolthole Index county data
24. Population density: Bolthole Index county data
25. Effective property tax rate: Bolthole Index county data
26. Median property tax bill: Bolthole Index county data
27. Emery County Road Department (emerycounty.com)

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.