Service areas
Every city Arena builds in, with that city's own numbers and exactly what changes there when Utah Code § 10-21-304 takes effect on October 1, 2026. No two of these pages say the same thing, because no two of these cities do.
Salt Lake City already allows ADUs. The new law removes the discretion.
Already allowedDraper's rules are proportional — and that's the part worth reading.
Already allowedSandy runs ADUs through a Special Use Approval — and that's exactly what the statute targets.
Allowed, but a high lot barSouth Jordan's own minimum lot is larger than the state's — so the state threshold is what changes here.
Already allowedWest Jordan is one of the few Wasatch Front cities without an owner-occupancy rule on the books.
Ordinance still in draftHerriman is still writing its detached ADU ordinance — and the clock runs out October 1.
Already allowedRiverton regulates the building, not the dwelling — ADUs sit inside its accessory-structure rules.
Already allowedMurray asks for a recorded affidavit before it will even accept your application.
Being amended nowHolladay has the lot sizes. The question is what its amended ordinance says.
Conditional use todayToday a detached ADU here is a conditional use. On October 1 that becomes illegal.
Lehi has already passed its new rules — and eligibility jumped about 20%.
Being amended nowAmerican Fork's older core has the lots. The ordinance is being amended now.
Overlay zones only todayProvo allowed detached ADUs only inside overlay zones. That ends October 1.
Not allowed todayOrem did not allow detached ADUs at all. On October 1, it must.
Being amended nowPleasant Grove is amending its ordinance ahead of the October 1 deadline.
Bountiful has an ADU ordinance already — the detached rules are what's moving.
Already allowedLayton's detached minimum is 6,000 sq ft — already well under the state line.
Park City is the hardest market on this list — and the 90-day rule is why.