General Contractor in Park City, Utah

Inside city limits, Section 15-4-7.1 of the Land Management Code covers internal ADUs. Section 15-4-7.2, which Ordinance 2026-21 added on October 1, 2026, covers detached ADUs. The two sections set these requirements.

• One internal ADU on a lot of at least 6,000 square feet that holds one single-family home
• In a zoning district where a single-family home is an allowed use, one detached ADU on a lot of at least 11,000 square feet that holds one single-family home
• A detached ADU no taller than 18 feet from existing grade, within the zone's regulations and any Area of Disturbance, Limits of Disturbance, or other stricter regulation on the recorded plat or other governing documents, and outside the front yard
• Adequate sewer, water, electrical, and storm water service with the capacity to serve a detached ADU
• One added parking space for an internal ADU, and for a detached ADU one on-site space below 2,000 square feet or two at 2,000 square feet or more, with tandem parking allowed only in the cases the code lists
• Review under the city's historic district rules for a home on the Park City Historic Sites Inventory, and a Historic District Design Review pre-application for a detached ADU at any other home in a historic zone
• A floor plan, architectural elevations, and a site plan with the administrative permit application
• An owner who lives in the home, or for a detached ADU in either the home or the unit, with the ADU never sold separately
• A Notice to Purchaser deed restriction recorded with the county
• No rental of either unit for less than 30 days with an internal ADU, or less than 90 days with a detached ADU
• Notice to the homeowners association, and final action by the Planning Department

The Land Management Code allows one ADU space in tandem only in three cases. In the first, the existing driveway is at least 25 feet long, measured from the property line, and vehicles are kept to approved garages and paved driveways. In the second, the arrangement preserves existing significant vegetation and every other parking alternative is undesirable. In the third, the property is in a residential historic district, and the space is approved through a conditional use permit for an internal unit or an administrative permit for a detached one, with the findings the code lists. Utah's ADU statutes apply in Park City as well, as our ADU page explains.

Sources: Park City Land Management Code, Section 15-4-7.1; Section 15-4-7.2. We confirm each item with the Planning Department for your property during preconstruction. For a property in unincorporated Summit County, the county's rules apply instead.