Building Services

  1. SLC.gov
  2. Building Services
  3. Contractor Required for an ADU

Contractor Required for an ADU

Contractor Required for ADU

Is a contractor required?

Is a contractor needed if you, as the homeowner, are doing the work to create an ADU or Internal ADU?

Yes, a contractor’s license is required for a building permit for an ADU or IADU, except:

  • Where there is no construction (change of use only), or
  • If the value of the work is less than $7,000 and includes no mechanical, electrical or plumbing work per Utah Code 58-55-305(1)(h).

Owner-Builder Exception

Note that the State’s Owner-Builder Certification Agreement cannot be used for an ADU or IADU constructed by a homeowner.

The agreement states:

“The improvements being placed on the property are intended to be used and will be used for my personal, non-commercial, non-public use …”

This refers to the licensure exemption in Utah Code 58-55-305(1)(d)(i). Because an ADU or IADU is intended for long-term rental, this condition is not met.

See Utah Code 10-9a-530(1).