South Jordan, UT Accessory Structures: ADU Rules (2026)
ADU rules in South Jordan, UT, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Eligible zones
- A-5, A-1, R-1.8, R-2.5, R-3, R-4, R-5
- Guesthouse cap
- 35% of home or 1,500 sq ft
- Min. lot size
- 6,000 sq ft (14,520 for guesthouse)
- Guesthouse setback
- 10 feet minimum side/rear
Summary
South Jordan permits ADUs only in A-5, A-1, R-1.8, R-2.5, R-3, R-4 and R-5 zones, with minimum lot sizes, parking, and setback rules for internal units and detached guesthouses.
Zoning: The Accessory Dwelling Unit Floating Zone shall be applied to conforming single-family dwellings in the following zones: A-5, A-1, R-1.8, R-2.5, R-3, R-4 and R-5. Approved accessory dwelling units shall meet the requirements of the underlying zone. Only one (1) ADU is allowed per lot. ADUs are not allowed in conjunction with mobile homes or any form of attached housing units. Lot Size: An internal ADU shall only be approved on a lot that is greater than six thousand (6,000) square feet in area. A Guesthouse shall only be approved on a lot that is equal to or greater than fourteen thousand five hundred twenty (14,520) square feet in area. The addition of an accessory dwelling unit shall not violate the maximum building coverage requirements outlined in Sections 17.40.020 and 17.30.020 of this Title. Guesthouses on flag lots are prohibited. Parking: A minimum of one (1) off-street parking spaces, in addition to those already required for the single-family home, shall be provided for an accessory dwelling unit and shall not render the required parking spaces for the single-family home inaccessible. All parking spots shall meet the requirements of Chapter 16.26 of this Code. Setbacks: All ADUs that propose modifications visible from the exterior of the home (i.e., additions and remodels to the primary dwelling or construction of a Guesthouse) shall comply with the following requirements:
Full Breakdown
South Jordan's Accessory Dwelling Unit Floating Zone, City Code § 17.130.030.020, applies only to conforming single-family lots in the A-5, A-1, R-1.8, R-2.5, R-3, R-4 and R-5 zones in this Salt Lake County, Utah city. Internal ADUs need a lot of at least 6,000 square feet; detached guesthouses need at least 14,520 square feet and are barred on flag lots. Guesthouses top out at three bedrooms and 35% of the primary home's living area or 1,500 square feet, need a rear or side setback of at least 10 feet, and must architecturally match the main house.
Violations & Fines
Building a guesthouse over the size cap without Planning Commission approval, or placing one on a flag lot or an ineligible zone, blocks permit issuance.
Frequently Asked Questions
What zones allow accessory dwelling units in South Jordan?
How big can a South Jordan guesthouse be?
Sources & Official References
Other rules in South Jordan
How South Jordan compares: Easiest Cities to Build an ADU·Compare South Jordan to another location·View the Utah accessory structures overview
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ADU Rules in Nearby Cities
How other cities in Salt Lake County handle adu rules.