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Boulder City Zoning Code

ESTABLISHMENT OF

ZONING DISTRICTS

§ 153.115 ZONING BY DISTRICTS.

   (A)   In accordance with the requirement of the Utah Code that zoning within municipalities be by districts, the town, as shown on the town zoning districts map, is divided into zoning districts that govern the use, intensity and other requirements for the use of land. The map accompanying this chapter, the town zoning districts map (zoning map), and incorporated herein by reference, identifies the location and distribution of each zoning district provided by the town. All development, use, activity and permits and licenses shall conform to all the provisions, standards and requirements of the applicable zoning district.
   (B)   To meet the purposes of this chapter, the following zoning districts are provided:
      (1)   Greenbelt - Multiple Use District (GMU);
      (2)   Low Density Residential District (LDR);
      (3)   Medium Density Residential District (MDR);
      (4)   High Density Residential District (HDR); and
      (5)   Commercial District (C).
(Ord. 46, passed 8-28-2001; Ord. 21D, passed 1-7-2004; Ord. 59, passed 5-8-2008, § 601)

§ 153.116 ZONING DISTRICTS PURPOSE.

   The zoning districts are formulated to provide and achieve the following purposes.
   (A)   Greenbelt - Multiple Use District (GMU). The Greenbelt - Multiple Use District (GMU) is established to provide areas for agricultural activities and to allow other uses determined to be compatible with agricultural uses and activities.
   (B)   Low Density Residential District (LDR). This district provides for a single-family large lot, low-density residential living environment with a density of one dwelling unit or duplex for each five acres and other uses that do not require additional public facilities and services than those provided to a low-density residential area. Additionally, this district is established to allow limited development on areas that may possess certain constraints for development.
   (C)   Medium Density Residential District (MDR). The Medium Density Residential (MDR) District, providing a maximum density of one dwelling unit or duplex per two and half acres, is provided by the town to allow an alternative residential living environment than those provided by the LDR and HDR Districts.
   (D)   High Density Residential District (HDR). The High Density Residential District (HDR) provides higher density residential areas and allows a variety of other uses and services to meet the needs of residents of the town.
   (E)   Commercial District (C). The town provides the Commercial (C) District to allow a variety of retail commercial, office and light industrial activities within the town to meet the needs of residents and visitors, to provide employment opportunities for residents, and to strengthen and provide diversity to the local economy. As explained in 7.5 of the 2021 amendments to Boulder’s General Plan, this Commercial District is no longer in use. It is retained only to provide a regulatory framework for those uses that were approved within it.
(Ord. 46, passed 8-28-2001; Ord. 21D, passed 1-7-2004; Ord. 59, passed 5-8-2008, § 602; Ord. 2021-2, passed - -2021; Ord. 2025-2, passed 5-1-2025)

§ 153.117 TABLE OF USES.

   (A)   The Table of Uses (Table 1) identifies the uses allowed within each Zoning District. The Table of Uses identifies uses allowed as a permitted use (identified as “P” in the table), for which only administrative permits are required; uses allowed upon approval of a conditional use permit (identified as “PC, Potentially Compatible”); and uses allowed as a temporary use (identified as “T”). Definitions for various uses may be found in § 153.011.
   (B)   All uses not specifically identified as permitted, potentially compatible (permitted with a conditional use permit), or temporary within a zoning district are prohibited there, as are all uses that are not specifically identified or listed in Table 1. Cells that are left blank in the Table of Uses indicate the use is prohibited in the particular zoning district, though the use may be allowed in other zoning districts.
Table of Uses
Use
Zoning District
GM
LDR
MDR
HDR
C
Table of Uses
Use
Zoning District
GM
LDR
MDR
HDR
C
Accessory dwelling unit, commercial
PC
PC
Accessory use or building
P
P
P
P
Agriculture, agricultural buildings
P
P
P
P
Bed and breakfast inn
PC
PC
PC
PC
Borrow pits
PC
Cemetery
PC
PC
Church
PC
PC
PC
PC
Commercial use
PC
Commercial use existing before 2021
P
Community market (farmer s market)
T
T
Concrete plant, in existing gravel pit
PC
Day care/preschool center
PC
Duplex
P
P
P
P
External accessory dwelling unit
PC
PC
PC
PC
Farmstand
T
T
Guest ranch
PC
Home child care
P
P
P
P
Home business
PC
PC
PC
PC
Internal accessory dwelling unit
P
P
P
P
Licensed family child care
P
P
P
Long-term temporary use
T
T
T
T
T
Mobile food business
PC
Public uses and utilities
PC
PC
PC
PC
Residential day care certificate
P
P
P
P
Residential facility for elderly
P
P
P
P
Residential short-term rental
PC
PC
PC
PC
Recreational Vehicle Occupancy
T
T
T
T
T
School
PC
PC
PC
PC
PC
Single-family on a lot of record
P
P
P
P
Special events
T
T
T
T
T
Wireless telecommunication facilities
PC
PC
PC
PC
PC
NOTES TO TABLE:
A blank cell indicates that the use is prohibited in that zoning district.
 
(Ord. 46, passed 8-28-2001; Ord. 48, passed 8-8-2002; Ord. 51, passed 11-5-2003; Ord. 46B, passed 12-3-2003; Ord. 21D, passed 1-7-2004; Ord. 59, passed 5-8-2008, § 603; Ord. 66, passed 9-1-2011; Ord. 72, passed 11-7-2013; Ord. 15-1, passed 2-5-2015; Ord. 2018-4, passed 1-3-2019; Ord. 2019-2, passed 5-2-2019; Ord. 2021-2, passed - -2021; Ord. 2021-5, passed 11-4-2021; Ord. 2021-7, passed 12-2-2021; Ord. 2024-2, passed 9-5-2024; Ord. 2025-2, passed 5-1-2025)

§ 153.118 TABLE OF DEVELOPMENT STANDARDS.

   The standards adopted in this table apply to all lots, parcels, buildings, structures, and uses unless they are specifically exempted by other requirements of this Code.
Development Standards
Zoning Districts
GMU
LDR
MDR
HDR
C
Development Standards
Zoning Districts
GMU
LDR
MDR
HDR
C
   Density Standards (see note)
Minimum Lot Size without Averaging
5 acres
5 acres
2.5 acres
1 acre
Minimum Building Lot Size with Averaging, Well
1 acre
1 acre
Minimum Building Lot Size with Averaging, Central Water
1 acre
1 acre
These minimum building lot sizes for the GMU, LDR, and MDR may be used ONLY when lot size averaging is used.
Maximum Lot Coverage
20%
20%
30%
40%
   Dimensional Standards, Principal Buildings
Maximum Building Height
30 ft
Minimum Front Setback
30 ft.
See note
Minimum Rear Setback
30 ft.
Minimum Side Setback
10 ft.
   Dimensional Standards, Accessory Buildings
Maximum Building Size
1,000 SF
See note
Maximum Building Height
30 ft
Minimum Front Setback
30 ft.
See note
Minimum Rear Setback
30 ft.
Minimum Side Setback
10 ft
Note:
1.   With the exception of the maximum building height, the dimensions of commercial development will usually be controlled by the need to comply with the standards of § 153.415 or § 153.430. Where compliance with those standards does not result in a larger setback or a lower lot coverage, commercial uses must comply with the standards established here for the LDR.
 
(Ord. 46, passed 8-28-2001; Ord. 50, passed 7-2-2003; Ord. 21D, passed 1-7-2004; Ord. 59, passed 5-8-2008, § 605; Ord. 2022-1, 6-2-2022; Ord. 2024-1, passed - -2024; Ord. 2024-4, passed - - )

§ 153.119 LOT SIZE AVERAGING.

This Code allows lot size averaging in new subdivisions or re-subdivisions in the GMU, LDR, and MDR zoning districts to help implement the Town’s general plan, maintain open space and agricultural land, and offer flexibility to landowners.
   (A)    The applicant may use the average lot size listed in the Table of Development Standards adopted in § 153.118 above as a uniform minimum lot size; or
   (B)   The applicant may propose any combination of lot sizes where all building lots are equal to or larger than the minimum lot size with averaging listed in Table 153.118 and where the total number of building lots does not exceed the ultimate number calculated in 153.119(C).
   (C)   The calculation for determining the ultimate number of building lots allowed shall be the total area of the parcel or lot being subdivided as of the date of the final application for a lot averaging subdivision divided by the minimum lot size without averaging in that zoning district as shown in § 153.118. Separately demarked areas indicated on the plat as non-buildable and reserved for a right-of-way, agriculture, common area, open space or similar use are not counted as building lots.
   (D)   Lot size averaging may be used when creating one-lot subdivisions in accordance with the exemptions § 152.204.
   (E)   Plats filed with the County Recorder will note that lot-size-averaging was used to create the lots as outlined in the Boulder Town Subdivision Code § 152.601.
(Ord. 2024-1, passed - -2024; Ord. 2024-4, passed - - )

§ 153.120 OFF-STREET PARKING REQUIREMENTS.

   The Table of Off-Street Parking Requirements (Table 3) accompanies the Table of Uses. This table identifies the minimum number of off-street parking spaces required to be provided by each use or activity allowed within each zoning district.
Table of Required Off-Street Parking
Use
Number Of Off-Street Parking Spaces Required
Table of Required Off-Street Parking
Use
Number Of Off-Street Parking Spaces Required
Accessory dwelling unit
1 in addition to the spaces required for the primary dwelling
Bed and breakfast inn
1 space for employee, plus 1 space per guest room
Churches
1 space for every 4 seats in the assembly area
Civic/public buildings/public facilities
1 space for every 400 square feet of floor area or as approved by the Planning Commission
Commercial sales and services
1 space for each 400 square feet of floor area
Corporate offices, professional offices, business offices and financial institutions
2 spaces, plus 1 space for each 300 square feet of gross floor area
Duplex
2 spaces for each living unit
Hotels/motels
1 space for each sleeping unit
Light manufacturing
1 for each person employed during regular working hours and adequate spaces for all company owned vehicles and visitors
Parks and playgrounds
As approved by the Planning Commission
Residential facilities for persons with disabilities
1 per each 4 residents, plus 1 for each 2 employees during regular hours
Residential facilities for elderly persons
1 per each 4 residents, plus 1 for each 2 employees during regular hours
Restaurants
1 space for each 4 seats or 1 space per 100 square feet of gross floor area, whichever is less
Schools
As approved by the Planning Commission
Single-family dwelling
2 per primary dwelling unit
Sports fields, sporting facilities, arenas
1 space for every 5 seats at maximum capacity or as approved by the Planning Commission
NOTES TO TABLE:
(1) Americans with Disabilities Act. All property owners and applicants for development approvals are advised that in addition to the minimum off-street parking requirements, they are also required to comply with the minimum standards for the provision of handicapped parking spaces as identified and required by the Americans with Disabilities Act, as amended.
(2) Location of required parking spaces. No off-street parking shall be provided within any required front yard setback, such area being landscaped.
(3) Dimensions of required parking spaces. Each required parking space shall be an area of not less than 8 feet 6 inches in width and having an area of not less than 180 square feet, together with a driveway connecting the parking space with a street or alley and permitting ingress and egress of an automobile
(4) Loading and unloading requirements and regulations.
   (a) Loading and unloading for commercial and industrial buildings. For all commercial and industrial buildings hereafter erected, or for any building converted to such use or occupancy, there shall be provided 1 loading and unloading space for each 25,000 square feet of floor area or as approved by the Planning Commission.
   (b) Location of required loading and unloading spaces. The required loading and unloading spaces shall in all cases be on the same lot as the use they are intended to serve. In no case shall required loading and unloading spaces be part of the area used to satisfy the parking requirement.
   (c) Collective action relative to loading and unloading. This chapter shall not be construed to prevent the joint use of loading and unloading spaces for 2 or more buildings or uses if the total of such spaces when used together is not less than the sum of the spaces required for the various individual buildings or uses computed separately.
 
(Ord. 46, passed 8-28-2001; Ord. 21D, passed 1-7-2004; Ord. 59, passed 5-8-2008, § 606; Ord. 2021-2, passed - -2021; Ord. 2021-7, passed 12-2-2021; Ord. 2025-2, passed 5-1-2025)