Salt Lake County · Service area
Murray asks for a recorded affidavit before it will even accept your application.
Already allowed The statute removes the discretion.
Takes about 3 minutes. No email required to see your result.
Murray permits one ADU per lot and puts real procedure around occupancy: the owner signs an affidavit that gets recorded with the Salt Lake County Recorder before the application is accepted. Its 10,000 sq ft detached minimum sits just under the state's 11,000 sq ft threshold.
“A specified municipality shall adopt a land use regulation that permits a detached accessory dwelling unit on any lot or parcel that is 11,000 square feet or larger…” — S.B. 284, Enrolled Copy, Utah Code § 10-21-304, effective October 1, 2026.
The numbers that decide your project
| Rule | Murray — Murray City Municipal Code |
|---|---|
| Detached minimum lot | 10,000 sq ft — just below the state's 11,000 sq ft line. confirm with city |
| Maximum size | Attached ADUs have no maximum floor area. confirm with city |
| Owner occupancy | Owner must reside in either the primary dwelling or the ADU, and sign an affidavit recorded with the County Recorder before the application is accepted. confirm with city |
| Parking | 1 additional space — three total across the house and ADU. confirm with city |
| Number per lot | One ADU per property. confirm with city |
| Minimum tenancy | No short-term rental; no rent collected for stays under 30 days. confirm with city |
state law Quoted from the enrolled copy of S.B. 284 — primary source, verified.
confirm with city From the city's published ADU material or council reporting — Arena confirms at the planning counter before design.
moving now The city is actively amending this ahead of October 1, 2026. Treat as a moving target.
We would rather show you the gap than guess. Arena is a builder, not a law firm — confirm your parcel with Murray before you sign anything.
What that means on your lot
That single number decides whether the new state law applies to you. Enter your address above — we'll tell you which rule you fall under and which plans fit, in about three minutes.
Arena publishes every price — seven plans from The Lookout at 735 sq ft to The Launchpad at 2,541 sq ft. One team owns design, engineering, permitting and construction.
From $128,625 · see every price →
Plans that fit a Murray backyard
Permitting queues in Murray will not get shorter after October 1.