Overview
Code type
euclidean
Naming convention
mixed
Standard Euclidean small-city Utah code; chapters are 1.07 (residential), 1.08 (commercial/industrial), 1.09 (mixed use), 1.16 (overlay zones). All Chapter 1.16 overlays are project/subdivision-specific (no traditional hazard overlays like floodplain codified as overlay districts — FEMA NFIP compliance handled via separate flood-damage-prevention ordinance). 1000 North Corridor Preservation is the closest to a traditional corridor overlay. | naming_convention_raw=Residential: RR-1 (rural), R1-20/R1-12/R1-10/R1-8 (SF by lot size), RM-8/RM-16 (multi-family, du/ac-encoded). Commercial: CD (central dev), CG (general), CH (highway), CN (neighborhood). Industrial: MD (manufacturing/distribution), MD-B (business park), MG (general industrial). Project-specific overlays named after subdivisions (Spring Hollow Legends, Tremont Center, Aspen Grove, Edgewood, Aspen Ridges, Rivers Edge). ; sub_flags_raw=[utah, small-city, rural, box-elder-county, bear-river-floodplain]
Worth knowing
- Five-Tier Single-Family Lot-Size Ladder — RR-1 (43,560 sf) → R1-20 → R1-12 → R1-10 → R1-8 creates an explicit five-step density gradient encoded in district names (R1-N = N×1,000 sf minimum). This is finer-grained than most small Utah cities, reflecting Tremonton's agricultural-to-urban transition zones. Uniform 36 ft / 2.5-story height cap across all residential districts; density is modulated entirely via minimum lot area and setbacks, not height.
- No Traditional Floodplain or Hazard Overlays in Chapter 1.16 — Chapter 1.16 overlays are EXCLUSIVELY project/subdivision-specific (Spring Hollow Legends, Tremont Center, Aspen Grove RV, Edgewood, Aspen Ridges, Rivers Edge, 1000 North Corridor). Floodplain management is handled outside the zoning overlay framework — via FEMA NFIP compliance and a separate flood-damage-prevention ordinance referenced through Chapter 1.19 supplementary regulations rather than codified as an FP overlay district. This differs from Brigham City (same county), which does use FP/CC/HS hazard overlays.
- Bear River Floodplain Constraint — Handled Via Separate Ordinance — Significant Bear River floodplain coverage on Tremonton's northern and western fringes triggers FEMA NFIP development review (elevation above BFE, compensatory storage) via the city's flood-damage-prevention ordinance — NOT via a codified Chapter 1.16 overlay zone. Bear River floodplain materially constrains residential and commercial development on northern and western parcels regardless of base district.
+ 7 more in Quirks & notes
Districts
res_sf 5com 4ind 3res_mf 2
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| RR-1 | Rural Residential | res_sf | — | 36 ft | — | — | — | — | — / — / — |
| R1-20 | Single-Family Residential — Large Lot | res_sf | — | 36 ft | — | — | — | — | — / — / — |
| R1-12 | Single-Family Residential — Medium Lot | res_sf | — | 36 ft | — | — | — | — | — / — / — |
| R1-10 | Single-Family Residential — Compact Lot | res_sf | — | 36 ft | — | — | — | — | — / — / — |
| R1-8 | Single-Family Residential — Small Lot | res_sf | — | 36 ft | — | — | — | — | — / — / — |
| RM-8 | Residential Multiple-Family — 8 du/ac | res_mf | — | 36 ft | — | — | — | — | — / — / — |
| RM-16 | Residential Multiple-Family — 16 du/ac | res_mf | — | 36 ft | — | — | — | — | — / — / — |
| CD | Central Development (Commercial) | com | — | 75 ft | — | — | — | — | — / — / — |
| CG | Commercial General | com | — | 75 ft | — | — | — | — | — / — / — |
| CH | Commercial Highway | com | — | 75 ft | — | — | — | — | — / — / — |
| CN | Commercial Neighborhood | com | — | 35 ft | — | — | — | — | — / — / — |
| MD | Manufacturing Distribution | ind | — | — | — | — | — | — | — / — / — |
| MD-B | Manufacturing Distribution — Business Park | ind | — | — | — | — | — | — | — / — / — |
| MG | Manufacturing — General Industrial | ind | — | — | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
SHL
Spring Hollow Legends Overlay Zone
SPECDesignated Spring Hollow Legends subdivision area; underlying base district is R1-12
| min_lot_area_sf | 6,000[1] |
|---|---|
| lot_width_ft | 60[2] |
| frontage_ft | 45[3] |
| front_setback_ft | 20[4] |
| rear_setback_ft | 15[5] |
| side_setback_ft | 6[6] |
| side_setback_total_ft | 12[7] |
| max_height_ft | 36[8] |
| max_stories | 2.5[9] |
| accessory_structures | Not allowed within the overlay[10] |
| required_amenities | Common walking trail, clubhouse, tennis/basketball/pickleball courts, perimeter fencing, front/side yard landscaping at occupancy[11] |
TC-MU
Tremont Center Mixed Use Overlay Zone
SPECDesignated Tremont Center area; underlying base district is Mixed Use (Chapter 1.09) / Commercial Development (CD) Zone
| lot_area_sf | Site Plan determined (Note 3)[12] |
|---|---|
| rear_setback_residential_ft | 20[13] |
| rear_accessory_no_openings_ft | 10[14] |
| permitted_uses | Multi-family attached/stacked, ADU (in commercial building), office, retail, restaurant (C), hotel/motel (C), big-box ≤75,000 sf, fitness, medical/dental, theater[15] |
| sign_standards | Per Section 1.16.050 (distinct from Chapter 1.27)[16] |
AG-RVP
Aspen Grove Recreational Vehicle Park Overlay Zone
SPECDesignated Aspen Grove RV Park area; underlying base district is RM-8
| permitted_uses | Temporary RV parking in designated areas, RV park office, retail convenience store, clubhouse/pool/amenities[17] |
|---|---|
| site_regulations | Per Chapter 1.19 RV Park Regulations (Supplementary)[18] |
EDG
Edgewood Overlay Zone
SPECDesignated Edgewood subdivision area; underlying base district is Mixed Use (MU)
| min_lot_area_single_family_sf | 6,000[19] |
|---|---|
| min_lot_area_single_family_edge_sf | 8,000[20] |
| min_dwelling_unit_sf | 900[21] |
| max_density_du_ac | 7[22] |
| lot_width_single_family_ft | 60[23] |
| frontage_ft | 45[24] |
| front_setback_ft | 20[25] |
| rear_setback_ft | 15[26] |
| side_setback_ft | 8[27] |
| side_setback_reduced_for_drainage_ft | 6[28] |
| max_height_ft | 36[29] |
| max_height_accessory_ft | 20[30] |
| max_stories | 2[31] |
ARG
Aspen Ridges Overlay Zone
SPECDesignated Aspen Ridges area; underlying base district is RM-16
| max_density_du_ac | 10[32] |
|---|---|
| frontage_ft | 45[33] |
| front_setback_ft | 20[34] |
| rear_setback_ft | 20[35] |
| lot_area_sf | Site Plan determined (Note 1)[36] |
1000N-CP
1000 North Corridor Preservation Overlay Zone
SPECParcels abutting or within defined distance of 1000 North corridor alignment
| slope_easement | Cut and/or fill slope easement required per c§1.16.145[37] |
|---|---|
| lot_regulations | Per c§1.16.150 (corridor-specific)[38] |
RE
Rivers Edge Overlay Zone
SPECDesignated Rivers Edge area along the Bear River floodplain periphery; operates under a pre-annexation agreement and master development agreement
| pre_annexation_agreement_required | 1[39] |
|---|---|
| master_development_agreement_required | 1[40] |
| housing_types | Per c§1.16.175 (includes multi-family stacked with parking-stall dimensional standards in c§1.16.180)[41] |
| improvements | Summary table in c§1.16.185 Table 1[42] |
State preemptions
UT-HB82-InternalADUapplies
Qualifying condition
Applies to all Utah cities of 1st-5th class (Tremonton is a 5th-class city, pop ~9,500 — between 1,000 and 10,000). Internal ADU mandate attaches within residential zones; Tremonton has RR-1 and R1-8/R1-10/R1-12/R1-20 single-family districts. | statute=Utah Code §10-9a-530 ; effect_on_city=City must allow internal ADUs (within existing single-family dwelling structure) as a permitted use in residential zones; may retain size/design/parking authority and limit to one per primary dwelling. Detached ADUs not mandated by HB 82 (but see HB 406/SB 140/HB 409 elsewhere).
Qualifying condition
Applies to all Utah cities; limits certain local restrictions on single-family housing (aesthetic/materials review). Tremonton RR-1 / R1-* residential standards are subject to these limits. | statute=Utah Code §10-9a-505.5 et seq. ; effect_on_city=City cannot impose aesthetic/material requirements beyond Utah Construction Code on single-family dwellings. Local dimensional standards (lot size, height, setback) retained. Chapter 1.08 §5 (400 sf minimum dwelling-unit size in CD) and Chapter 1.16 Edgewood Overlay (900 sf minimum) must be tested against SB 174's material/appearance protections; size-minimums are generally allowed where non-aesthetic, but design-review provisions in §1.19 Residential Architectural Standards may be narrowed.
UT-HB406-DetachedADUapplies
Qualifying condition
Applies to Utah cities; extends HB 82 framework to allow detached ADUs in certain residential zones. Tremonton has multiple single-family districts (RR-1, R1-8 through R1-20) that would be within scope. | statute=Utah Code §10-9a-530.5 ; effect_on_city=City may be required to allow detached ADUs per state framework while retaining size/height/lot-coverage authority. Tremonton's current Chapter 1.07 does not expressly codify detached ADU allowance; state floor applies.
UT-LUDMA-Frameworkapplies
Qualifying condition
LUDMA governs all Utah municipal land use. Tremonton as a 5th-class city operates under LUDMA procedural framework. | statute=Utah Code Title 10 Chapter 9a ; effect_on_city=Procedural due-process, vested-rights, nonconforming-use, and enforcement framework applies. Not a dimensional preemption but constrains HOW zoning is administered.
Non-applicable laws (3)
UT-HB462-ModerateIncomeHousingunder_review
Qualifying condition
reason=HB 462 MIH plan requirements apply to Utah cities with population >5,000 within a Metropolitan Planning Organization (MPO) served county. Box Elder County WFRC MPO membership is ambiguous (historically WFRC covers Salt Lake/Davis/Weber/Morgan; Box Elder is adjacent-scope). Brigham City (same county) was determined to be in scope at pop 19,574; Tremonton at pop ~9,500 is over the 5,000 threshold but MPO status must be independently confirmed. Provisionally not_applicable pending WFRC scope confirmation; reclassify to applies=true with status=confirmed if WFRC scope verified.
UT-HB462-StationAreaPlanunder_review
Qualifying condition
reason=Tremonton has no UTA fixed-guideway (TRAX/FrontRunner) station. SAP certification under HB 462 applies only to cities containing a UTA fixed-guideway station; FrontRunner northern terminus is Pleasant View (~35 miles south of Tremonton). Does not apply.
UT-DensityHeightPreemptionunder_review
Qualifying condition
reason=Utah has NOT adopted a statewide density, height, or middle-housing preemption. Cities retain full local authority over base-district bulk standards (ref: zoning/us/utah/preemptions.md). Tremonton's RR-1 through R1-8 residential bulk values are NOT preempted by state law.
Adopted building codes
Statewide; local may lag
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Five-Tier Single-Family Lot-Size Ladder — RR-1 (43,560 sf) → R1-20 → R1-12 → R1-10 → R1-8 creates an explicit five-step density gradient encoded in district names (R1-N = N×1,000 sf minimum). This is finer-grained than most small Utah cities, reflecting Tremonton's agricultural-to-urban transition zones. Uniform 36 ft / 2.5-story height cap across all residential districts; density is modulated entirely via minimum lot area and setbacks, not height.
- No Traditional Floodplain or Hazard Overlays in Chapter 1.16 — Chapter 1.16 overlays are EXCLUSIVELY project/subdivision-specific (Spring Hollow Legends, Tremont Center, Aspen Grove RV, Edgewood, Aspen Ridges, Rivers Edge, 1000 North Corridor). Floodplain management is handled outside the zoning overlay framework — via FEMA NFIP compliance and a separate flood-damage-prevention ordinance referenced through Chapter 1.19 supplementary regulations rather than codified as an FP overlay district. This differs from Brigham City (same county), which does use FP/CC/HS hazard overlays.
- Bear River Floodplain Constraint — Handled Via Separate Ordinance — Significant Bear River floodplain coverage on Tremonton's northern and western fringes triggers FEMA NFIP development review (elevation above BFE, compensatory storage) via the city's flood-damage-prevention ordinance — NOT via a codified Chapter 1.16 overlay zone. Bear River floodplain materially constrains residential and commercial development on northern and western parcels regardless of base district.
- Agricultural-Use Overlay Absent — Agricultural-Use is Permitted-By-Right in Most Commercial/Industrial Zones — Chapter 1.08 Uses table lists 'Agriculture, Existing' as permitted-by-right in CD, CG, CH, CN, MD, MD-B, and MG districts. Tremonton does NOT use an AP-style agricultural preservation overlay to protect farmland at the city edge — instead, existing agriculture is grandfathered in all commercial/industrial zones, and rural character is preserved via the RR-1 district and large-lot R1-20.
- Project-Specific Overlays Encode Development Agreements — Most Chapter 1.16 overlays (Spring Hollow Legends, Edgewood, Aspen Ridges, Rivers Edge) are tied to specific subdivision developments with required-amenity schedules and, in Rivers Edge's case, an explicit pre-annexation and master development agreement. Density up-zoning (6,000 sf lots vs. underlying R1-12's 12,000 sf) is traded for amenity infrastructure (clubhouse, trails, courts, fencing). This contract-zoning style is common in small Utah cities experiencing subdivision growth.
- Two-Tier Commercial Height Split (75 ft vs. 35 ft) — CD / CG / CH commercial districts permit 75 ft / 7 stories — unusually tall for a 9,500-population city, reflecting mixed-use ambition in the downtown core and highway corridors. CN (Neighborhood Commercial) is capped at 35 ft / 2 stories. This 40-foot height gap creates a sharp form transition between neighborhood-embedded CN and corridor/downtown CD/CG/CH.
- Industrial Districts Have No Codified Maximum Height — MD, MD-B, and MG industrial districts defer maximum height to Conditional Use Permit process (marked 'C' in c§1.08.015). This gives the city discretionary control over tall industrial structures (grain elevators, silos, distribution-center racking) rather than a hard numerical cap. Combined with 100-foot loading-dock-facing-front setbacks, this makes Tremonton's industrial zones flexible for agricultural-industry and logistics uses that drive local economy (Malt-O-Meal / Post plant).
- Tremont Center Overlay Enables Mixed-Use Without MU-Zone Lot Standards — TC-MU overlay defers nearly all dimensional controls to Site Plan review (Notes 3, 4, 5 in 1.16.040) rather than prescribing fixed lot / setback / FAR standards. This gives the city full discretion over Tremont Center development form — effectively a form-based-code-lite approach confined to a single overlay zone, while the rest of the city operates on traditional Euclidean dimensional tables.
- Edgewood Overlay Subtracts Commercial Uses from Underlying MU — Edgewood Overlay is unusual: instead of ADDING uses to an underlying district, it subtracts — expressly prohibiting commercial uses permitted in the underlying Mixed Use (MU) district, leaving only residential typologies (single-family, twin home, attached) and narrow support uses (church, residential assisted-living C, ADU prohibited, residential facilities permitted). This creates a residential-only carve-out within an otherwise mixed-use district.
- State Preemption Footprint is Light — As a 5th-class Utah city (pop ~9,500) outside any UTA fixed-guideway service area and of ambiguous MPO scope, Tremonton's state-preemption obligations are limited to HB 82 internal ADUs, HB 406 detached ADUs, SB 174 single-family modifications, and LUDMA procedural framework. HB 462 MIH applicability depends on WFRC MPO scope (adjacent county Box Elder is not a core WFRC member) — provisionally treated as not-applicable pending confirmation.
Formulas
Definitions
- height
- Measured grade-to-highest-point; 36 ft / 2.5 stories uniform across all residential districts (RR-1, R1-8 through R1-20) per c§1.07.015. Commercial CD/CG/CH: 75 ft / 7 stories per c§1.08.015; CN: 35 ft / 2 stories per c§1.08.015. Industrial MD/MD-B/MG: by Conditional Use Permit per c§1.08.015.
- lot_coverage
- Building footprint / lot area; not explicitly codified in Chapter 1.07 or 1.08 for Tremonton — derived inferentially from setback envelope and character.
- far
- Gross floor area / lot area; not explicitly codified in Tremonton's land use code — inferred from setback/height envelope for comparative purposes only.
- du_ac
- Dwelling units per acre. RM-8 = 8 du/ac maximum (attached housing); RM-16 = 16 du/ac maximum (attached housing) per c§1.07 RM district standards. SF districts du/ac derived from 43,560 / min_lot_sf.
- setback_front
- Minimum front-yard setback in feet per c§1.07.015 / c§1.08.015
- setback_side
- Minimum side-yard setback per side; most residential districts also specify a total-both-sides figure per c§1.07.015
- setback_rear
- Minimum rear-yard setback per c§1.07.015 / c§1.08.015
- parking
- Off-street parking per Chapter 1.17 of Title I — not specified per district in 1.07/1.08 dimensional tables; handled via separate chapter
Capacity calculations
- rr1_rural
1.0 du/ac maximum (43,560 sf = 1 acre minimum lot)- r1_20_large_lot
2.18 du/ac max (20,000 sf minimum)- r1_12_medium
3.63 du/ac max (12,000 sf minimum)- r1_10_compact
4.36 du/ac max (10,000 sf minimum)- r1_8_small_lot
5.44 du/ac max (8,000 sf minimum)- rm_8_attached
8 du/ac max by code- rm_16_multifamily
16 du/ac max by code
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Primary source
Retrieval failure: None for the city-domain PDFs (Chapter 1.07 HTML + Chapter 1.08 PDF + Chapter 1.16 PDF all retrieved successfully). municode.com library.municode.com landing page for Tremonton Revised Ordinances returns only shell HTML (chapter-level text not scraped); the canonical dimensional tables are available directly from tremontoncity.gov.
Citations
- [1] c§1.16.015
- [2] c§1.16.015
- [3] c§1.16.015
- [4] c§1.16.015
- [5] c§1.16.015
- [6] c§1.16.015
- [7] c§1.16.015
- [8] c§1.16.015
- [9] c§1.16.015
- [10] c§1.16.015
- [11] c§1.16.020
- [12] c§1.16.040
- [13] c§1.16.040
- [14] c§1.16.040
- [15] c§1.16.035
- [16] c§1.16.050
- [17] c§1.16.060
- [18] c§1.16.065
- [19] c§1.16.085
- [20] c§1.16.090
- [21] c§1.16.080 Note 1
- [22] c§1.16.090
- [23] c§1.16.085
- [24] c§1.16.085
- [25] c§1.16.085
- [26] c§1.16.085
- [27] c§1.16.085
- [28] c§1.16.085 Note 3
- [29] c§1.16.085
- [30] c§1.16.085
- [31] c§1.16.085
- [32] c§1.16.100
- [33] c§1.16.110
- [34] c§1.16.110
- [35] c§1.16.110
- [36] c§1.16.110
- [37] c§1.16.145
- [38] c§1.16.150
- [39] c§1.16.160
- [40] c§1.16.160
- [41] c§1.16.175
- [42] c§1.16.185
Research status
Publication gates
| primary url present | passed | |
|---|---|---|
| no aggregator cited | passed | |
| confidence tags full form | passed | |
| overlays have parameters trigger confidence | passed | |
| preempt section city specific | passed |
Data quality
68%completeness38 confirmed14 partial7 inferred
Documented gaps
- 1000 North Corridor Preservation Overlay dimensional table (c§1.16.150) full extraction
- Rivers Edge Overlay lot regulations and housing-type density table (c§1.16.170-185 Table 1)
- Chapter 1.09 Mixed Use Zone District full dimensional standards (used as underlying for TC-MU and EDG overlays but not separately extracted)
- Chapter 1.17 off-street parking ratios per use
- lot-coverage and FAR caps (not codified in Tremonton ordinances)
- WFRC MPO scope confirmation for HB 462 MIH applicability
- HB 406 detached ADU local implementation status
Known issues
cohort:tremonton-ruralfreshness:stable
Verification
| claims_checked | 52 |
|---|---|
| claims_verified | 47 |
| specialist_version | 1.0 |
| verified_at | 2026-04-24T00:00:00Z |
| notes | Dimensional standards for RR-1 / R1-20 / R1-12 / R1-10 / R1-8 / RM-8 / RM-16 directly fetched from tremontoncity.gov residential zone districts page (c§1.07.015). Commercial/industrial standards (CD / CG / CH / CN / MD / MD-B / MG) directly fetched from Chapter 1.08 PDF on tremontoncity.gov and parsed via pdftotext (c§1.08.015). Overlay dimensional standards (Spring Hollow Legends, Tremont Center, Aspen Grove RV, Edgewood, Aspen Ridges) directly fetched from Chapter 1.16 PDF (c§1.16.*). 1000 North Corridor and Rivers Edge overlay dimensional tables partial (structure confirmed; full detail pending continued PDF extraction). |
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