Unincorporated Emery County, Utah requires a building permit and zoning clearance for most structures1,2. Emery County Building & Zoning handles those approvals, while Southeast Utah Health Department requires a septic permit and plan-design approval where public sewer is unavailable3,4,5. Owner-builders may qualify for a state contractor-license exemption, but county permits, inspections and occupancy approval still apply6,7.
Do you need a building permit in Emery County, Utah?
Yes.
Yes. Unincorporated Emery County requires an owner or authorized agent to obtain a permit before construction, enlargement, alteration, repair, moving, demolition, an occupancy change, or regulated electrical, gas, mechanical or plumbing work1. Listed exemptions include a one-story detached accessory structure of no more than 200 square feet and a fence no more than 6 feet high1. Zoning clearance comes first2. Emery County says it follows the 2021 residential, building, plumbing, mechanical, fuel-gas, energy-conservation and existing-building codes, the 2020 electrical code and the Utah Wildland Urban Interface Code, all with Utah amendments8. The minimum permit fee is $50, with the actual fee based on project valuation and possible plan-check charges2. A qualifying owner-builder remains subject to county permits6.
Who is the Emery County building department, and how do you reach it?
Emery County Building & Zoning is the first stop for construction outside incorporated city limits; the office lists (435) 381-3555, building@emery.utah.gov and 75 East Main, Room 106, Castle Dale.
Emery County Building & Zoning is the first stop for construction outside incorporated city limits; the office lists (435) 381-3555, building@emery.utah.gov and 75 East Main, Room 106, Castle Dale3. Inside city limits, contact the applicable city or town office because local zoning and building requirements vary2. After zoning approval, submit the building-permit form with the applicable plans and specifications; the Building Official issues the permit after determining that the plans meet building regulations2. County-permitted work requires inspections, including applicable electrical, plumbing and mechanical tests, with at least 24 hours' notice11. Leave inspectable work uncovered11. Occupancy must wait for final inspection and a Certificate of Occupancy or an authorized temporary occupancy permit7.
Does Emery County have zoning?
Yes.
Yes. Emery County requires zoning approval for structures in unincorporated areas, while cities and towns apply their own local rules2. The county's published map shows A-1 Agricultural, I-1 Industrial, M-1 Mountain, and MG & R-1 Mining, Grazing & Recreation districts, but the map is labeled unofficial, so confirm the parcel's current district with Building & Zoning12. An A-1 dwelling needs at least 10 acres and 1,000 points under the county's zoning-clearance system9. A-1 buildings generally need a front setback of at least 55 feet from a public-road centerline or 30 feet from the right-of-way, whichever is greater, while dwellings need 10-foot side and rear setbacks; highway and accessory-building exceptions apply9. The A-1 district has no minimum building height, but the cited provision does not settle maximum height9. Unincorporated dwellings must contain at least 800 square feet2. M-1 dwellings need at least 40 acres unless they are in an approved mountain subdivision, and all M-1 structures must stand at least 100 feet from the nearest public road or highway9.
How do septic permits work in Emery County?
Southeast Utah Health Department is the primary local authority for onsite wastewater systems in Emery County, and its Castle Dale office lists 435-381-2252 at 25 West Main Street.
Southeast Utah Health Department is the primary local authority for onsite wastewater systems in Emery County, and its Castle Dale office lists 435-381-2252 at 25 West Main Street4,13. Where public sewer is unavailable, a privately owned onsite system serving an individual home or business requires a septic permit and plan-design approval5. That requirement also limits off-grid sanitation choices; an off-grid plan does not bypass wastewater approval5. Emery County's building process calls for sewage-disposal approval and a percolation test before the building permit is completed2. Only about 18.7% of Emery County soils are rated without severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency14. We could not confirm the separate field-inspection sequence for an ordinary conventional system; ask the Castle Dale office what inspections and signoffs apply13.
Can you live in an RV or tiny home on your land in Emery County?
We could not confirm a rule allowing residential RV occupancy on private land throughout unincorporated Emery County; ask Building & Zoning about the parcel's district, duration and utility setup before relying on an RV during construction.
We could not confirm a rule allowing residential RV occupancy on private land throughout unincorporated Emery County; ask Building & Zoning about the parcel's district, duration and utility setup before relying on an RV during construction2,3. Elmo has a specific rule: an RV cannot be used for human habitation unless it is in a recreational vehicle court15. Elmo's approved RV-court spaces may be rented for no more than 30 days15. Do not apply Elmo's rule to land elsewhere in the county. A tiny home used as a dwelling in unincorporated Emery County must contain at least 800 square feet and clear the county's zoning and building-permit process16. Elmo instead requires at least 550 square feet of ground-floor area for a one-family dwelling in its A-1 and R-1 zones, with separate standards for additional units and mobile homes17. Where public sewer is unavailable, onsite wastewater still needs a septic permit and plan-design approval5.
Building a home in Emery County: the steps, in order
Confirm whether the parcel is inside a municipality or in unincorporated Emery County, then have the correct office verify the zoning and allowed use.
- Confirm whether the parcel is inside a municipality or in unincorporated Emery County, then have the correct office verify the zoning and allowed use2,3.
- For an A-1 dwelling, document at least 10 acres and 1,000 zoning-clearance points9.
- Prepare a dimensioned plot plan around the 800-square-foot dwelling minimum and the setbacks for the parcel's zoning district2,9.
- Obtain the culinary-water hookup letter, sewage-disposal approval and percolation test called for by the county process2.
- Ask the Emery County Road Department or UDOT whether access needs an encroachment permit2,18.
- After zoning clearance, submit the building application, plans and specifications and pay the valuation-based fee, subject to the $50 minimum2.
- Request inspections at least 24 hours ahead and correct rejected work before continuing11.
- Wait for final inspection and occupancy approval before moving in7.
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 field.
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 field14. If a parcel needs a private well, a valid water right must be in place before construction and the State Engineer's Start Card functions as the well-construction permit10. Confirm water, septic feasibility, current zoning and legal road access before closing because each affects the permit path2. Emery County regulates subdivision layout, design and required submissions, applying the more stringent standard where provisions conflict9. An agricultural partition may avoid a recorded subdivision plat only after a Zoning Administrator waiver and deed covenants barring residential or other non-agricultural use until an approved subdivision plat is recorded; health, zoning and building requirements still apply9. Federal land accounts for about 82.3% of the county, so verify boundaries and access carefully14.
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 home3,12.
- An owner-builder exemption concerns contractor licensing only; Emery County's building permit, inspections and occupancy approval still apply6,7.
- 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 build2,18.
- Emery County has not confirmed a countywide rule for private-parcel RV occupancy, so ask Building & Zoning about the specific zoning district and proposed use2,3.
Sources
18 official pages, each quoted and re-checked · written October 9, 2026
- Building Permit Requirements
- Permit Process
- Emery County Building & Zoning (emerycounty.com)
- Onsite Wastewater (Septic) - Southeast UT Health
- Onsite Wastewater (Septic) - Southeast UT Health
- Utah Code § 58-55-305, Exemptions from licensure
- Building Permit Application
- Building Permit Requirements
- 2026 Revised Zoning Ordinance
- Water Well Drilling Information
- Inspections
- Emery County Zoning Boundaries
- Southeast Utah Health Department, Castle Dale Office (seuhealth.gov)
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Zoning Ordinances Adopted for Elmo Town
- Permit Process
- Zoning Ordinances Adopted for Elmo Town
- Emery County Road Department (emerycounty.com)
Written October 9, 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.
Off-grid gear
Going off-grid in Emery County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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