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Current County Regulations note that internal ADU's are permitted on lots a minimum of 6,000 sq.ft. Detatched ADU's are permitted on lots a minimum of 7,000 sq. ft. except in the PC Zone, where detatched ADU's are allowed on 6,000 sq. ft. lots.
Salt Lake City
Salt Lake City
ADU regulations vary by local zoning ordinances.
https://www.slc.gov/buildingservices/accessory-dwelling-unit-information/
West Jordan City
West Jordan City
One ADU is allowed on the property. Garages cannot be converted into ADU's.
https://www.westjordan.utah.gov/newsroom/2025/09/adding-a-rental-unit-to-your-property-start-here/
Herriman
Herriman
Detached ADU's: Your property must be in a Residential or Agricultural Zone and that your lot must be .2295 acres or larger
Internal ADU's: Your property must be in a Residential or Agricultural Zone and that your lot must be .1377 acres or larger
SLC ADU Financing
SLC ADU Financing
Attention Salt Lake City! You are eligible for preferred financing on your ADU project. If you live in West Valley or the 9-line project area (south of I-80 between I-215 and I-15 in this highlighted area) the Community Development Corporation of Utah is offering construction loans for your new ADU. Key features of the program are loans up to $200,000 with a 3% fixed rate. There is a 30-year amortization period and the loan requires a $2,000 down payment. This program is designed for homeowners looking to increase their property value while also increasing affordable housing options within the city. For more information and application, please visit their website CDCutah.org/i-want-to/finance-adu-construction.
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