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

At a glance

Building permit

Required in unincorporated Weber County; apply online, with fees set during plan review⁶⁷⁸

Zoning

Yes, throughout unincorporated Weber County²

Septic permits

Weber-Morgan Health Department, Environmental Health Division⁹

Owner-builder exemption

Available, capped at 1 home a year and 3 homes in five years for your own noncommercial use¹⁰¹¹

RE-zone lot size

15,000 square feet in RE-15 and 20,000 square feet in RE-20 for a main use¹²

Agricultural buildings

A conditional permit exemption may apply to non-occupancy farm structures on qualifying acreage¹³

Well permit

A Start Card from the state water rights division serves as your permit to construct¹⁴

Septic soils

Only 2.6% of soils rate free of severe limits for a conventional drain field⁵

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

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

Yes. Utah's State Construction Code requires a permit for new construction and for most voluntary alterations, renovations or changes of use, and Weber County's Building Inspection Department applies that code in unincorporated areas through plan review and field inspections¹⁵¹⁶. All applications go through the county's OpenGov portal, plans are reviewed in the order received, and the county asks you to allow 14 working days for review⁷. Weber County sets the building-permit fee after reviewing the plans for code compliance rather than publishing one flat amount⁸. You'll also need proof of an approved culinary water source and wastewater approval, or the applicable connection fees, before permit issuance¹. A sole owner building for personal, noncommercial use may qualify for Utah's contractor-license exemption, but county permits, inspections and zoning still apply¹¹. A separate agricultural-building exemption may cover a farm structure used only for agriculture and not human occupancy on a qualifying parcel, but permitted electrical, plumbing or mechanical work is still required¹³.

Who is the Weber County building department, and how do you reach them?

Weber County Building Inspection Division handles permit applications, plan review and inspections for unincorporated Weber County¹⁷. If your project is in the newly incorporated Ogden Valley City, the county directs you to that city's own planning process instead; septic permits for the same address still come from Weber-Morgan Health¹⁴. Inspections must be scheduled in advance and the approved plans have to be on-site for every inspection; the county checks footing, foundation, underslab, roof sheathing, four-way rough, insulation and a final inspection before you can move in¹⁸. Your permit expires 180 days after issuance, or 180 days after your last inspection, if you don't show progress in that window¹⁸. Before final occupancy, a final approval form has to be signed by Planning and Zoning, the Health Department, your water provider, Weber Fire District, County Engineering, and whoever handles your sewer or septic — then it goes back to Building Inspection¹⁹.

Does Weber County have zoning, and what does that mean for RVs, tiny homes and setbacks?

Yes, in the unincorporated area. Weber County Planning administers zoning only there, and property inside a city falls under that city's planning department and zoning ordinance, so call the city first if the parcel is within city limits²²⁰. City zoning does not change who permits septic: Weber-Morgan Health does, county-wide⁴. In the Residential Estates zones, a main use needs at least 15,000 square feet in RE-15 or 20,000 square feet in RE-20¹². A main building generally needs a 30-foot front and rear setback; a dwelling needs a 10-foot side setback, with both sides totaling at least 24 feet²¹. A main building can be 35 feet tall and an accessory building 25 feet unless it qualifies as a large accessory building²². Cluster-subdivision lots, corner lots and arterial streets change these numbers, so have Planning apply the code to the recorded lot²³. Land splits and line adjustments also go through county subdivision review²⁴. Weber County's rules on tiny-home occupancy, manufactured-home placement, minimum dwelling size and lot coverage could not be confirmed; ask Planning about the parcel and proposed dwelling²³.

How do septic permits work in Weber County?

The Weber-Morgan Health Department administers and permits onsite wastewater systems in Weber County, including feasibility review, installation oversight and final certification⁴²⁵. The process starts with site and soil evaluation; the department may require a percolation test or groundwater monitoring, and a private well must already be permitted, installed and approved before the septic permit can issue²⁵. The current conventional-system permit fee is $375, plus a $40 state fee, while the site evaluation is $210 per test hole and separate plan review is $105 per hour with a two-hour minimum²⁵. Fees differ for other system types, and a permit is valid for 1 year²⁵. After installation but before backfilling, the department performs a final inspection; the system may operate only after it passes and the department issues its certification letter²⁶⁴. Only 2.6% of Weber County soils rate free of severe limits for a conventional drain field, so confirm feasibility before treating a standard system as part of the build budget⁵.

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

Utah's rule for RVs and tiny houses in a recreational vehicle park requires the park to host at least two RVs, comply with local building, zoning, electrical, health and fire codes, and only admit tiny houses with a data plate or manufacturer certification — a tiny house under that rule tops out at 400 square feet²⁷²⁸. That rule governs RV parks specifically; the state's own guidance says whether a tiny home is allowed outside an RV park depends on local land-use rules and how the structure is classified — primary dwelling, accessory dwelling, modular unit or manufactured home²⁸. This guide could not find an official Weber County rule confirming whether you can live long-term in an RV on your own private land, or camp there outside an approved campground — both remain open questions, so ask the Planning Division before you buy or move one in²³. The county's short-term-rental rules by zone (red, green and FR-3/purple) govern nightly rentals, not full-time residency, so don't rely on them to answer this question²⁹.

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

1. Confirm the parcel's zone, minimum lot area and setbacks with the Weber County Planning Division; if the deal involves a split or line adjustment, resolve the subdivision process before designing the house²³¹²²⁴.

1. Arrange an approved water source and ask Weber-Morgan Health to complete septic feasibility review if public sewer is unavailable²⁵.

1. If you need a well, secure a water right first; Utah issues a Start Card after approval, and that card serves as the well-construction permit¹⁴.

1. Have Weber County Engineering review flood risk; a structure, fill or other disturbance in a Special Flood Hazard Area needs a floodplain development permit and may need an elevation certificate³⁰³¹.

1. Apply online through OpenGov with proof of approved water and wastewater arrangements; Weber County establishes the building-permit fee during plan review¹⁷¹⁸.

1. Schedule inspections as work proceeds and keep approved plans on-site; the permit expires after 180 days without progress¹⁸.

1. Complete the multi-agency final approval form before occupancy¹⁹.

What to check before you buy land in Weber County

Typical home values in Weber County run around $465,286, and farmland values average about $18,674 an acre³²³³. Only about 41% of the county's land has a slope of 15% or less, while about 20% is federal land³⁴³⁵. Annual precipitation is about 27 inches, and severe drought occurs in roughly a quarter of years, so verify a durable water supply as carefully as the septic site³⁶³⁷. A private well permit runs $800 through Weber-Morgan Health, or $230 for water testing alone³⁸. If a proposed parcel depends on a land split, lot-line adjustment or parcel-line adjustment, settle the county subdivision requirements before closing²⁴. A driveway approach that cuts new county-road asphalt carries a $150 surcharge that drops by $50 each year over 3 years, in addition to the applicable excavation charge³⁹. Effective property tax is about 0.6%, with a typical annual bill around $2,415⁴⁰⁴¹. Confirm zoning and setbacks with Planning, septic and well feasibility with Weber-Morgan Health, flood review with Engineering and legal access before closing^23383042.

Watch-outs

• Weber County's own zoning code has no confirmed, findable rule on tiny-home occupancy, manufactured-home placement, minimum dwelling size or lot coverage; treat those as open questions, not permissions, and confirm directly with the Planning Division²³.
• Long-term RV occupancy and temporary camping on private land in unincorporated Weber County are open questions this guide could not confirm from an official source; don't assume either is allowed without asking Planning first²³.
• Only 2.6% of Weber County's soils rate free of severe limits for a conventional septic drain field; budget for a site evaluation before you count on standard septic costs⁵.

Sources

1. Building Inspection, quoted and re-checked
2. webercountyutah.gov, quoted and re-checked
3. Planning, quoted and re-checked
4. Utah Administrative Code R317-4, Onsite Wastewater Systems, quoted and re-checked
5. 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
6. Building Inspection (2026 county census)
7. Building Inspection, quoted and re-checked
8. Building Inspection, quoted and re-checked
9. Weber County Development Process Packet (references Environmental Health septic permit) (2026 county census)
10. Utah Code 58-55-305 - Exemptions from licensure (2026 county census)
11. Utah Code § 58-55-305, Exemptions from licensure, quoted and re-checked
12. Chapter 104-3 Residential Estates Zones RE-15 and RE-20, quoted and re-checked
13. Weber County Agricultural Building Permit Exemption Application, quoted and re-checked
14. Water Well Drilling Information, quoted and re-checked
15. Utah Code Title 15A, State Construction and Fire Codes Act (Utah statewide rule), quoted and re-checked
16. Building Inspection, quoted and re-checked
17. Weber County Building Inspection Division (webercountyutah.gov)
18. Building Inspection, quoted and re-checked
19. Final Approval Letter, quoted and re-checked
20. webercountyutah.gov, quoted and re-checked
21. Chapter 104-3 Residential Estates Zones RE-15 And RE-20, quoted and re-checked
22. Chapter 104-3 Residential Estates Zones RE-15 and RE-20, quoted and re-checked
23. Weber County Planning Division (webercountyutah.gov)
24. Recorder/Surveyor FAQ, quoted and re-checked
25. Water Quality | Weber-Morgan Health Department, quoted and re-checked
26. Water Quality | Weber-Morgan Health Department, quoted and re-checked
27. Utah Administrative Code Rule R392-301, Recreational Vehicle Parks (Utah statewide rule), quoted and re-checked
28. OPRO Accessory Dwellings (ADU's) and other dwelling types (Utah statewide rule), quoted and re-checked
29. Planning - Nightly Rentals, quoted and re-checked
30. Weber County Engineering Department (webercountyutah.gov)
31. Flood Maps, quoted and re-checked
32. Typical home value (Zillow): Bolthole Index county data
33. Farmland value per acre (USDA census): Bolthole Index county data
34. Share of land at 15% slope or less: Bolthole Index county data
35. Federal land share: Bolthole Index county data
36. Annual precipitation: Bolthole Index county data
37. Share of years in severe drought: Bolthole Index county data
38. Weber-Morgan Health Department - Environmental Health Division (webermorganhealth.gov)
39. Excavation Permits, quoted and re-checked
40. Effective property tax rate: Bolthole Index county data
41. Median property tax bill: Bolthole Index county data
42. Weber County Engineering Department (webercountyutah.gov)

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.