Unincorporated Juab County, Utah requires building permits for construction activity, with a narrow exemption for qualifying agriculture-only structures not used for human occupancy12. Juab County Planning and Zoning handles county building permits and zoning; Central Utah Public Health Department issues septic permits345. Occupancy of a permitted structure requires final inspection and a certificate of occupancy6.
At a glance
- Building permit
- Required for construction activity, with a narrow exemption for a building used entirely for agriculture1
- Zoning
- County zoning applies to unincorporated land; confirm the district in the Land Use Code and zoning map47
- Septic
- Central Utah Public Health Department requires a permit before construction and inspection before backfilling89
- RV living
- Long-term occupancy on private land is unconfirmed; ask Juab County Planning and Zoning3
- Manufactured home
- Allowed where a single-family residence is permitted, with a compliant permanent foundation and applicable local approvals10
- Owner-builder
- A conditional contractor-licensing exemption is available; file the certification with the county building department11
- Private well
- A valid water right and state Start Card are required before regulated well construction12
- Agricultural building
- A qualifying agriculture-only, non-occupied structure can be exempt, but power or another use triggers county permitting12
Who to call
Building permits
Juab County Planning and Zoning Department
Building permits and inspections, planning, zoning, land-use applications and county zoning-map questions
160 N Main Street, Office #117 Nephi, UT 84648
Septic permits
Central Utah Public Health Department – Nephi Office
Onsite wastewater permitting and environmental-health questions for Juab County
160 North Main Nephi, UT
Roads & driveways
County roads and questions about access within county rights-of-way
75 N 500 W Nephi, UT 84648
Contact details are copied from each office’s official page and were checked against it on October 11, 2026.
Off-grid gear
Going off-grid in Juab 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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Do you need a building permit in Juab County, Utah?
Juab County Planning and Zoning issues building permits and inspects construction in unincorporated Juab County; Mona and Levan administer their own building permits inside their boundaries3131415. Septic permits remain with Central Utah Public Health Department5. Utah’s State Construction Code applies to new construction and qualifying repairs, alterations and changes of use in Juab County; current editions include the 2024 International Building Code, 2021 International Residential Code and 2023 National Electrical Code, with applicable amendments1617. A building used entirely for agriculture can be exempt from county building permitting, but another use or power requires a permit and inspection1. The state agricultural exemption does not cover a dwelling; plumbing, electrical and mechanical permits may still be required2. Unless another exemption applies, the state exemption is unavailable below 5 contiguous acres inside a city or town or below 2 contiguous acres in a county-approved subdivision; those acreage restrictions do not apply in an agricultural protection area2.
Who is the Juab County building department, and how do you reach it?
Juab County Planning and Zoning is the county building-permit and inspection office3. The office is at 160 N Main Street, Office #117, Nephi, UT 84648, and its phone number is 435-623-34003. The same department administers county planning and zoning, so it is the first call for permit applicability, parcel zoning, setbacks, allowed uses and application forms3. The county's published application checks acreage, frontage, plans, zoning, water, wastewater, addressing and encroachment approvals, and an issued permit expires if work does not start or remains suspended or abandoned for 180 days18.
Does Juab County have zoning?
Juab County has local zoning administered by Planning and Zoning for unincorporated land; use the county Land Use Code and zoning map to identify the parcel’s district4719. Mona and Rocky Ridge have their own zoning; Santaquin, which reaches into Juab County, also administers its own zoning202122. Central Utah Public Health Department remains the septic authority for Juab County addresses5. Planning Commission minutes identify 50-acre and 160-acre housing requirements in different A1 districts; confirm the current codified requirement with Planning and Zoning233. One internal accessory dwelling unit within a primary dwelling is permitted in an area zoned primarily for residential use, subject to building, health and fire codes and the local controls Utah law allows24. We could not confirm current minimum dwelling size, setbacks, lot coverage or height limits; ask Planning and Zoning for the parcel’s district standards3.
How do septic permits work in Juab County?
Central Utah Public Health Department is the septic authority for Juab County85. No part of an onsite wastewater system may be built until the health department issues a construction permit; the application package includes soil classification, a site plan, system design and the applicable fee25. The listed permit fees are $600 for a conventional system, $900 for an alternative system and $200 for repair or replacement25. The installed system must be inspected before it is backfilled9. Only 17% of county soils are rated “not limited” for a conventional drain field, so make septic feasibility an early purchase contingency rather than assuming a standard system will work26.
Can you live in an RV or tiny home on your land in Juab County?
We could not confirm whether unincorporated Juab County allows residential RV occupancy, temporary private-land camping or tiny-home occupancy; ask Planning and Zoning before buying or moving onto the land3. Utah’s RV-park sanitation rule covers RVs and qualifying tiny houses in RV parks, so it does not establish permission to live in one on a private parcel2728. A manufactured home in Juab County may not be excluded where a single-family residence is permitted, but needs a code-compliant permanent foundation and must meet applicable land-use rules, building codes and restrictive covenants10. Manufactured-home additions, garages, carports and storage buildings also must comply with the applicable building code10.
What are the steps to build a home in Juab County?
- call Juab County Planning and Zoning to confirm jurisdiction, zoning, allowed use, dimensional standards and the building-permit submittal for the parcel319.
- secure culinary water. Unincorporated-county projects generally need county-approved culinary water before the building permit, although a signed release can allow earlier permit issuance; occupancy still waits until county and state water requirements are satisfied29. A private well also requires a valid water right and a state Start Card before construction12.
- obtain the onsite wastewater construction permit from Central Utah Public Health Department before septic work begins3025.
What should you check before buying land in Juab County?
Water comes first in this dry county: annual precipitation averages 11.7 inches, and severe drought has occurred in 37.9% of years3334. A private well needs a valid water right and a Start Card, and unincorporated-county projects cannot receive occupancy approval until county and state water requirements are satisfied1229. Septic feasibility also deserves an early site review because only 17% of soils are rated “not limited” for a conventional drain field26. If land will be divided, expect county feasibility review of water, wastewater, drainage, floodplain conditions and soil testing for the proposed lots35. Confirm legal access and driveway geometry because the county limits access to county roads, while state-highway connections require separate UDOT approval3132.
Watch-outs
- Do not move into a permitted structure before Juab County completes the final inspection and issues the certificate of occupancy6.
- The owner-builder exemption concerns contractor licensing, not building permits or inspections; qualifying owners must file the certification with the county building department11.
- Juab County may issue a building permit under a signed water release, but the property cannot be occupied until county and state water requirements are met29.
- County building-permit fees and a current floodplain-development process were not confirmed; ask Juab County Planning and Zoning about both before finalizing a construction budget3.
Sources
- Planning and Zoning, quoted and re-checked
- Utah State Construction Code, quoted and re-checked
- Juab County Planning and Zoning Department (juabcounty.gov)
- Planning and Zoning – JuabCounty.Gov, quoted and re-checked
- Local Health Departments and District Engineers, quoted and re-checked
- Juab County Building Permit Application, quoted and re-checked
- Planning and Zoning – JuabCounty.Gov, quoted and re-checked
- Central Utah Public Health Department Onsite Wastewater Program (2026 county census)
- Waste Water System Permit Application, quoted and re-checked
- Utah Code § 17-27a-513, Manufactured homes, quoted and re-checked
- Owner/Builder Certification Agreement to Comply with the Construction Trades Licensing Act, quoted and re-checked
- Water Well Drilling Information, quoted and re-checked
- Utah Code Section 17-60-204, County safety and welfare regulations (Utah statewide rule), quoted and re-checked
- Mona: Building Permit Requirements (Juab County), quoted and re-checked
- Town of Levan: Levan Town building permit packet (Juab County), quoted and re-checked
- Utah HB0532 — Building Code Revisions, quoted and re-checked
- Utah Code 15A-2-103, Specific editions adopted of construction code, quoted and re-checked
- Planning and Zoning – JuabCounty.Gov, quoted and re-checked
- Planning and Zoning – JuabCounty.Gov, quoted and re-checked
- Mona: Mona City home page (Juab County), quoted and re-checked
- Town of Rocky Ridge: Rocky Ridge Town public-hearing and town-meeting minutes (Juab County), quoted and re-checked
- Santaquin: Planning & Zoning (Juab County), quoted and re-checked
- Juab County Planning Commission Minutes, August 18, 2021, quoted and re-checked
- Utah Code Title 17, Counties, quoted and re-checked
- Onsite Wastewater Permit Instructions, quoted and re-checked
- 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
- Utah Administrative Code Rule R392-301, Recreational Vehicle Parks (Utah statewide rule), quoted and re-checked
- OPRO Accessory Dwellings (ADU's) and other dwelling types (Utah statewide rule), quoted and re-checked
- Unconditional and Full General Release of Liability, quoted and re-checked
- Central Utah Public Health Department – Nephi Office (centralutahhealth.gov)
- Juab County Manual of Roadway Design & Construction Standards, quoted and re-checked
- Conditional Access Permit (Utah statewide rule), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Planning and Zoning, quoted and re-checked
Written October 11, 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.