Salt Lake County · Service area

Can you build a backyard home in Murray?

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.

What changed here on October 1

Murray asks for a recorded affidavit before it will even accept your application.

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

Murray ADU rules at a glance

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 still bringing this into line with the law that took effect 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

Murray's 10,000 sq ft detached minimum is already more permissive than the state floor — here the statute's value is removing discretion, not lowering the lot bar.

Is my Murray lot 11,000 sq ft?

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.

Quoted on your Murray lot

Eight plans, from The Lookout at 784 sq ft to The Launchpad at 3,061 sq ft. A plan that is one component stack shows that price. The others say request a quote.

ADU calculator → · How the price works →

Can you build a backyard home in Murray?

Murray asks for a recorded affidavit before it will even accept your application.

Murray ADU rules at a glance

Murray's 10,000 sq ft detached minimum is already more permissive than the state floor — here the statute's value is removing discretion, not lowering the lot bar.

Is my Murray lot 11,000 sq ft?

Quoted on your Murray lot

Three places to start

The Lookout

The Encore

The Loft

There's still $2,200 a month hiding in your house.