Bolthole Index

Box Elder County, Utah

Building permits, zoning and land rules in Tremonton, Utah

For a new home in Tremonton, Utah, start with city land use approval before submitting a building permit application.1 Tremonton administers its own residential zoning in Box Elder County.2 Bear River Health Department handles septic permits where sewer lines are unavailable; Tremonton accessory dwelling units must connect to city water and sewer.34

At a glance

Building permits
Apply through Tremonton City; obtain required land use approval first.51
Zoning
City residential zoning applies to principal and accessory structures.2
Septic permits
Bear River Health Department requires a septic permit where sewer lines are unavailable.3
ADU utilities
Accessory dwelling units must permanently connect to city culinary water and sanitary sewer.4
Mobile homes
Mobile homes are allowed only in approved mobile-home parks and must be designed for long-term occupancy.6
Private shallow wells
Utah requires a valid groundwater right and a Start Card before shallow-well construction.7

Who to call

Building permits

Tremonton City Building Department

City building permit applications, building plans and inspections

(435) 257-9500

102 S. Tremont St. Tremonton, UT 84337

Planning & zoning

Tremonton City Community Development Department

City zoning questions, land use permits, subdivision and site plan review

(435) 257-9504

[email protected]

102 S. Tremont St. Tremonton, UT 84337

Septic permits

Bear River Health Department, Tremonton Office

Environmental Health contact for septic feasibility and septic permitting in northern Box Elder County

(435) 792-6500

440 West 600 North, Tremonton, Utah 84337

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 Tremonton means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Tremonton, UT?

Tremonton directs applicants to obtain required land use approval before submitting a building permit application.5 The Community Development Department requires a land use permit for projects that add to or modify a structure’s footprint; basement finishes, interior remodels and electrical upgrades typically need only a building permit.1 For manufactured-home placement, apply to the Tremonton City Building Official or designated department, with evidence that the project complies or can comply with local zoning, building-code and subdivision requirements.8

Who handles building permits and zoning in Tremonton?

Use the Tremonton City Building Department for building permit applications and inspections, and the city Community Development Department for zoning and land use approval.51 Contact Community Development at [email protected] for application requirements and parcel questions.1 For a subdivision, rezoning or site plan application, the department strongly recommends a pre-application consultation.1 Septic feasibility and septic permitting for northern Box Elder County remain with Bear River Health Department’s Tremonton office, rather than the city building counter.910

Does Tremonton have zoning, lot-size and setback rules?

Tremonton’s residential lot regulations apply to both principal structures and accessory structures in residential zones.2 Ask Community Development to identify the parcel’s district and the lot-size and setback standards for the proposed layout before ordering plans.1 The city’s residential table identifies RR-1, R1-20, R1-12, R1-10, R1-8, RM-8 and RM-16 districts.11 Multi-family dwellings may receive reduced lot regulations in RM-8 and RM-16, but site-plan permit and subdivision approval are required.12 Those provisions do not establish a single citywide minimum lot size.211

How do septic permits work inside Tremonton?

Bear River Health Department requires a septic permit before constructing, altering or repairing a septic system on property where sewer lines are unavailable.3 The septic design and location must meet standards based on soil conditions, the site plan and percolation-test results.3 The listed conventional septic system permit fee is $840; confirm the current charge with Environmental Health before applying.3 Northern Box Elder County septic feasibility applications go through the Tremonton health office.9 For a Tremonton ADU, the city instead requires permanent connections to its culinary water and sanitary sewer systems.4

Can you live in an RV or tiny home in Tremonton?

We could not confirm Tremonton’s rules for living in an RV, temporary camping on private land or occupying a tiny home; ask Community Development about the proposed dwelling and address before buying.1 Tremonton’s mobile-home rule allows a mobile home only on a space in an approved mobile-home park, designed for long-term occupancy.6 Manufactured and modular homes have a separate building permit process requiring compliance with the applicable zoning, building-code and subdivision requirements.8 A proposed small ADU must also meet the city’s permanent water and sewer connection requirement.4

What are the steps to build a home in Tremonton?

First, take the parcel and proposed layout to Tremonton Community Development to discuss zoning requirements and required development applications.1 Next, obtain land use approval when the project adds to or changes a structure’s footprint, then submit the building permit application to the city Building Department.15 Resolve wastewater feasibility with Bear River Health Department if sewer lines are unavailable; an ADU must connect to city water and sewer.34 For land outside city limits, use the Box Elder County guide: the county oversees land use development only in unincorporated areas and directs municipal land use questions to the municipality.13

What should you check before buying land in Tremonton?

Ask Tremonton Community Development about the intended use and site layout, including any subdivision, site plan or zoning-change application, before committing to a parcel.1 We could not confirm a citywide minimum dwelling floor area, construction-related RV allowance or agricultural building exemption; ask the city planning and building offices about your specific proposal.15 If the water plan involves a shallow well, Utah requires a valid groundwater right and issues a Start Card upon approval; construction must be performed by a licensed well driller or licensed shallow-water-well constructor.7

Watch-outs

  • Tremonton’s ADU water and sewer requirement rules out an off-grid sanitation plan for an ADU.4
  • We could not confirm RV occupancy or tiny-home occupancy in Tremonton; obtain a parcel-specific answer from city Community Development.1
  • When a Tremonton land use permit is required, approval must come before the building permit application.1

Sources

  1. Tremonton City Community Development Department (tremontoncity.gov)
  2. Tremonton Zoning Ordinance § 1.07.015—Lot Regulations (Tremonton), quoted and re-checked
  3. Environmental Health - Bear River Health Department, quoted and re-checked
  4. Tremonton Zoning Ordinance § 1.21.035—Accessory Dwelling Unit Approval Standards (Tremonton), quoted and re-checked
  5. Tremonton City Building Department (tremontoncity.gov)
  6. Tremonton Zoning Ordinance § 1.19.040—Mobile Homes (Tremonton), quoted and re-checked
  7. Water Well Drilling Information (Utah statewide rule), quoted and re-checked
  8. Tremonton Zoning Ordinance § 1.19.035—Manufactured and Modular Homes (Tremonton), quoted and re-checked
  9. Subdivision Septic System Feasibility Application instructions, quoted and re-checked
  10. Bear River Health Department, Tremonton Office (brhdut.gov)
  11. Tremonton Zoning Ordinance § 1.07.015—Lot Regulations (Tremonton), quoted and re-checked
  12. Tremonton Zoning Ordinance § 1.07.015—Lot Regulations (Tremonton), quoted and re-checked
  13. Community Development FAQ, 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.

Answers from the rulebook for Tremonton

Tremonton’s own rules

  • InspectionsLimited

    Interior access for an attached accessory dwelling unit inside Tremonton City limits.

    • Interior access must be maintained unless sufficient means of egress are determined during a building inspection.
    “Interior access between the principal dwelling unit and an attached Accessory Dwelling Unit shall be maintained unless sufficient means of egress have been determined during a building inspection.”
  • Local zoningPresent (with conditions)

    Land inside Tremonton City limits.

    • Residential-zone regulations apply to principal and accessory structures in residential zones.
    “This Section of Chapter 1.07 shall apply to all principal structures and accessory structures in residential zones.”
  • Zoning districtsPublished (with conditions)

    Tremonton residential zoning districts.

    • The published residential lot-regulations table identifies RR-1, R1-20, R1-12, R1-10, R1-8, RM-8, and RM-16.
    “ZONING DISTRICTS RR-1 R1-20 R1-12 R1-10 R1-8 RM-8 RM-16”
  • Manufactured homesLimited

    Mobile-home occupancy inside Tremonton City limits.

    • Allowed only on a mobile-home space in an approved mobile-home park.
    • Must be designed for long-term occupancy.
    • A building permit depends on compliance or present ability to comply with the Building Official, zoning ordinance, and building codes.
    “A Mobile Home shall only be allowed on a Mobile Home Space in an approved Mobile Home Park and designed for long-term occupancy.”
  • Off-grid sanitationProhibited

    Accessory dwelling units inside Tremonton City limits.

    • This finding is limited to ADUs; it does not establish a general rule for every dwelling type.
    “Accessory Dwelling Units shall be permanently connected to the City's culinary water system and sanitary sewer system”
  • Subdividing landRegulated (with conditions)

    Multi-family dwellings in Tremonton RM-8 and RM-16 zones.

    • Multi-family dwellings may receive reduced lot regulations in these zones.
    • Site-plan permit and subdivision approval are required.
    “Note: Multi-Family Dwellings may have reduced Lot Regulations in the RM-8 and RM-16 zones. Site Plan Permit (see Chapter 1.26 of this Title) and subdivision approval required.”
  • Permit processPartial

    Manufactured-home placement permits inside Tremonton City limits.

    • Application is made to the designated City Building Official, other designated official, or department.
    • The permit is granted upon evidence of compliance or present ability to comply to the Building Official's satisfaction.
    • Foundation and other stated standards apply.
    “Application for such Building Permit shall be made to the designated Tremonton City Building Official, or other designated official or department. The Building Permit shall be granted upon evidence of compliance, or present ability to comply, to the satisfaction of the Tremonton City Building Official, with all the local zoning, building code and subdivision requirements within the zone or area proposed for construction;”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Tremonton or Box Elder County directly.

  • Owner-builder exemption — Owner-builder construction inside Tremonton City limits.
  • Building code adopted — Building-code adoption for construction inside Tremonton City limits.
  • Minimum dwelling size — Principal single-family dwellings inside Tremonton City limits.
  • Lot coverage — General lot coverage for residential development inside Tremonton City limits.
  • Camping on your land — Temporary camping on private land inside Tremonton City limits.
9 more unanswered
  • Tiny homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Short-term rentals
  • Permit fees

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Tremonton publishes no rule on the point, not that none exists. Box Elder County’s page lists the county offices to call.

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