Do I Need a New Certificate of Occupancy for a Change of Use in Utah?
Quick Answer
Yes — changing a building's use or occupancy classification requires a new certificate of occupancy, and it can trigger accessibility, fire, and structural upgrades.
What a Change of Occupancy Is
A change of occupancy means using a building (or part of it) for a different purpose or occupancy classification than before — for example retail to restaurant, office to medical, warehouse to retail, or residential to commercial. Under the Utah State Existing Building Code (Chapter 10), you cannot legally occupy the space under its new use until the building official issues a new certificate of occupancy.
Why It Matters Even Without Construction
People often assume that if they aren't remodeling, they don't need anything. Not so — a change of use by itself can require a new certificate of occupancy and code upgrades, because the new use may carry stricter requirements than the old one. This catches a lot of business owners moving into a previously-occupied space.
Upgrades a Change of Occupancy Can Trigger
Moving to a more hazardous or higher-occupancy classification can require real upgrades: accessibility (ADA) features such as an accessible entrance and route, fire-protection systems where the new use crosses a sprinkler/alarm threshold in the building code, and means-of-egress improvements. Structurally, if the change increases the design occupant load by 100% or more or bumps the building into a higher risk category, it can be required to meet seismic requirements as if it were new construction.
How to Get the New Certificate
The process varies by city, but generally you apply with the building department, describe the current and proposed use, and undergo plan review against the new occupancy's requirements. If upgrades are required you permit and complete that work, pass the inspections (often including the fire marshal), and the building official then issues the new certificate of occupancy. Larger jurisdictions like Salt Lake City run this through their online permit portal.
Do This Before You Sign the Lease
The single best move is to verify the existing occupancy classification and what your intended use would require before committing to a space. A cheap-looking lease can hide tens of thousands in mandatory upgrades if the prior use was different. A quick call to the city building department about the address and your planned use will surface this early.
Bottom Line
Changing a building's use in Utah requires a new certificate of occupancy — even without remodeling — and can trigger accessibility, fire, egress, and even seismic upgrades. Confirm the classification and required upgrades before you sign the lease, not after.