Unincorporated Beaver County, Utah requires a building permit before most construction, alterations, demolition, occupancy changes, and regulated trade work1. The county administers zoning and applies Utah's state construction code to unincorporated parcels23. Southwest Utah Public Health Department handles septic permits and inspections4.
At a glance
- Building permit
- Required for most construction and regulated trade work1
- Zoning
- County-administered for unincorporated parcels beginning 01- or 02-2
- Septic permits
- Southwest Utah Public Health Department4
- RV living
- Temporary owner permit only; May 1 through October 31, up to 180 days yearly5
- Owner-builder
- Licensing exemption available; permits and inspections still apply6
- Private well
- Water right and state permission required before drilling7
- Manufactured-home width
- At least 24 feet; multisectional or multimodular on a permanent foundation8
Who to call
Building permits
Beaver County Building Department
Building permits, zoning, payment and inspection scheduling for unincorporated Beaver County
105 East Center Street, Beaver, UT 84713
Septic permits
Southwest Utah Public Health Department Environmental Health
Reviews septic plans, issues permits, conducts inspections and maintains records for Beaver County
Contact details are copied from each office’s official page and were checked against it on October 15, 2026.
Off-grid gear
Going off-grid in Beaver 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 Beaver County, Utah?
Yes. Unincorporated Beaver County requires the owner or authorized agent to obtain a permit before covered construction, enlargement, alteration, repair, moving, demolition, occupancy changes, or regulated electrical, gas, mechanical, and plumbing work1. The county has adopted the state construction code for construction it regulates in unincorporated areas3. A detached, single-story storage shed or playhouse no larger than 200 square feet is among the listed permit exceptions, subject to the county's stated limitations1. Utah's agricultural construction-code exemption can cover a structure used solely for agriculture and not for human occupancy, but regulated trade work may still need permits and the exemption narrows on certain smaller tracts9. A building may not be used or occupied until the building official issues a certificate of occupancy after all required inspections are approved10. For commercial buildings and changes of occupancy classification in unincorporated Beaver County, the county cites International Building Code Section 110.1 and likewise issues no certificate of occupancy until every required inspection is approved11.
Who is the Beaver County building department, and how do you reach it?
The Beaver County Building Department handles building permits and inspections for unincorporated Beaver County at 105 East Center Street in Beaver; call (435) 438-648412. For unincorporated parcels beginning with 01- or 02-, the department handles zoning, applications, payment, and inspection scheduling212. Milford requires building permits under its own rules, with applications filed through Beaver County's Building Department; Southwest Utah Public Health Department remains the septic authority134. The county's online application accepts plans, engineering, septic permits, soil-test results, and owner-builder certification; payment follows plan review and zoning approval14. A building permit is not valid until required fees are paid15. Electrical, mechanical, plumbing, and roofing permits cost $75.75; building permit fees differ by the permit issued, and new-home and commercial fees are based on square footage, materials, and labor, with credit-card processing and some additional inspection charges possible16. Required inspections need at least 24 hours' notice17.
Does Beaver County have zoning?
Yes. Beaver County administers zoning for unincorporated parcels whose parcel numbers begin with 01- or 02-2. Minersville administers its own zoning inside town limits; Southwest Utah Public Health Department remains the septic authority, and the town requires written health-department approval of water and waste disposal before a building permit18194. Beaver City handles its own zoning, and Milford and Minersville handle the zoning portion of their permits, so the county's zoning rules here apply to unincorporated land20. The county code publishes district regulations, including an Agricultural 5 District, but the online zoning map is informational rather than legally binding and designations can change, so confirm the parcel's district before relying on the map2122. Minimum lot sizes depend on the district: FR-1 requires at least 1 acre and 120 feet of width23, FR-.5 requires at least 0.5 acre and 80 feet of width24, and any dwelling in the MU-20 Multiple Use District needs at least 20 acres25. Internal accessory dwelling units are permitted in some residential districts and conditional in others, are prohibited on parcels under 6,000 square feet, and may not have a separate utility meter26. Planned unit developments in residential or agricultural districts require at least 5 acres, with lot coverage determined by the approved site-development plan27. Beaver County generally regulates divisions into 2 or more lots, although qualifying minor and simple subdivisions follow alternate procedures28. Agricultural-purpose divisions can be exempt from those subdivision rules without becoming exempt from zoning, building, septic, health, or access requirements29.
How do septic permits work in Beaver County?
Southwest Utah Public Health Department is the septic authority for Beaver County, and its Environmental Health program reviews plans, issues permits, conducts inspections, and keeps system records430. Call the Beaver and Garfield County septic contact at (435) 865-515830. A permit and approved design are required before installing, replacing, or modifying a septic system, and soil and percolation testing must be completed by a Utah-certified onsite professional31. Every septic system needs a final inspection before backfilling32. Only 37.1% of Beaver County soils avoid severe USDA limitations for a conventional drain field, so make septic feasibility part of the land evaluation rather than assuming a standard system will work33. Off-grid wastewater may use an approved onsite system, but it remains subject to district permitting and inspection34.
Can you live in an RV or tiny home on your land in Beaver County?
Beaver County prohibits residential use of a travel trailer outside approved and licensed travel-trailer parks, except for the temporary owner permit described next5. Travel trailers may be stored in unincorporated areas but may not serve as permanent living quarters35. A property owner may obtain a temporary-use permit in agricultural, multiple use, residential estate, residential, forest/recreation residential, and multiple-family residential districts from May 1 through October 31, for at most 180 days per calendar year, issued again each year5. The temporary residence requires an approved septic tank, culinary water, fire protection, and adequate power5. We could not confirm a specific tiny-home occupancy rule; ask the Beaver County Building Department how the proposed unit will be classified12. A new manufactured house on a single-family-zoned lot in unincorporated Beaver County must be at least 24 feet wide at its smallest dimension, multisectional or multimodular, and installed on a compliant permanent foundation, with applicable zoning and utility approvals8. Detached accessory dwellings must be permanent structures; wheeled trailers do not qualify36. A short-term rental requires a conditional-use permit; the application lists a $100 fee, plus letter and hourly charges when the property is in an Agriculture District and owners within 500 feet must be notified, and it also requires a state transient-room-tax number and safety, parking, and posting standards37.
Building a home in Beaver County: the steps, in order
- Identify whether the parcel is unincorporated from its parcel number, then confirm the zoning district and allowed dwelling type with the Beaver County Building Department212.
- Verify the district's lot area, width, setbacks, height, access, and subdivision status before designing the home38394028.
- Secure a water source; a private well requires a valid water right and state permission to drill7.
- Obtain written health-department approval for the culinary-water supply and waste-disposal method, including the septic permit and design when needed4131.
- Obtain any required conditional-use permit before applying for the building permit, and begin permitted work within 180 days or a new permit is required41.
- Schedule each required county inspection with at least 24 hours' notice, leave the septic system uncovered for final inspection, and obtain the certificate of occupancy before using the building173210.
What should you check before buying land in Beaver County?
Verify septic feasibility early because only 37.1% of county soils avoid severe limitations for a conventional drain field33. Confirm legal water before assuming a well is available, since groundwater use and drilling require a valid water right and state approval7. Sidewalks and driveways are exempt from Beaver County building permits, but a separate county right-of-way encroachment permit may be required when the work crosses a county right-of-way, so ask the Building Department about the proposed connection4212. A connection to a state highway requires a UDOT conditional access permit43. Construction or development in a mapped special-flood-hazard, erosion-hazard, or mudflow-hazard area requires a county flood-control development permit before work starts, and the county may ask for scaled plans and lowest-floor elevations44. Ask the county building inspector for flood-control application forms; the county commission, building inspector, or a designated engineer administers the requirements45. Beaver County averages 2.8 people per square mile, and 76.7% of its land is federally owned4647. The effective property-tax rate is about 0.4%, with a median annual bill of $1,1214849.
Watch-outs
- A small accessory building may be permit-exempt, but adding electrical work triggers a permit1.
- The Utah owner-builder exemption concerns contractor licensing only; Beaver County permits, inspections, zoning, and other requirements still apply6.
- The county zoning map is informational and zoning designations can change, so verify the district with the Building Department before designing or buying2212.
Sources
- Building Permit Requirements, quoted and re-checked
- Building Department | Beaver County, UT - Official Website, quoted and re-checked
- 8-1-1: State Construction Code Adopted | County Code of Beaver County, UT, quoted and re-checked
- Septic Systems - Southwest Utah Public Health Department, quoted and re-checked
- 9-20-2: Location and Use, quoted and re-checked
- Utah Code § 58-55-305, Exemptions from licensure, quoted and re-checked
- Water Well Drilling - Utah Division of Water Rights, quoted and re-checked
- 9-13-21: Manufactured and Modular Housing, quoted and re-checked
- Utah Code § 15A-1-204 (Utah statewide rule), quoted and re-checked
- Inspection Information, quoted and re-checked
- Inspection Information, quoted and re-checked
- Beaver County Building Department (beaver.utah.gov)
- Milford: Building Permits (Beaver County), quoted and re-checked
- Building Department, quoted and re-checked
- Permits, quoted and re-checked
- Fees & Payments, quoted and re-checked
- Inspection Information, quoted and re-checked
- Town of Minersville: Sec. 28-226. Establishment of zoning districts (Beaver County), quoted and re-checked
- Town of Minersville: Sec. 28-7. Building permit required (Beaver County), quoted and re-checked
- Building Department | Beaver County, UT - Official Website, quoted and re-checked
- Beaver County Zoning Interactive Map, quoted and re-checked
- Planning & Zoning, quoted and re-checked
- 9-6C-5: Area, Width And Yard Regulations, quoted and re-checked
- 9-6C-5: Area, Width And Yard Regulations, quoted and re-checked
- 9-7-4: Area Regulations, quoted and re-checked
- 9-21-4: Permitted and Conditional Uses and Limitations, quoted and re-checked
- 9-18-4: Required Conditions, quoted and re-checked
- Subdivisions, quoted and re-checked
- 10-3-6: Exemptions and Variations, quoted and re-checked
- Southwest Utah Public Health Department Environmental Health (swuhealth.gov)
- Septic Systems - Southwest Utah Public Health Department, quoted and re-checked
- Septic System Application Checklist v03-2023, 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
- Septic Systems - Southwest Utah Public Health Department, quoted and re-checked
- Building Department | Beaver County, UT - Official Website, quoted and re-checked
- 9-21-4: Permitted and Conditional Uses and Limitations, quoted and re-checked
- CUP - Short-Term Rental / Bed & Breakfast, quoted and re-checked
- 9-6C-5: Area, Width and Yard Regulations, quoted and re-checked
- 9-6C-5: Area, Width and Yard Regulations, quoted and re-checked
- 9-6C-4: Height Regulations, quoted and re-checked
- 9-1-7: Building Permit Required, quoted and re-checked
- Building Permit Requirements, quoted and re-checked
- Conditional Access Permit (Utah statewide rule), quoted and re-checked
- 9-10B-4: Permit Requirements, quoted and re-checked
- 9-10B-4: Permit Requirements, quoted and re-checked
- Population density: Bolthole Index county data
- Federal land share: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 15, 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.