top of page
Search

ADU regulations | Pierce County

  • Writer: National Design
    National Design
  • Oct 27
  • 1 min read

  • In urban zones (UGA – Urban Growth Area), the maximum size for an ADU is 1,000 square feet of floor area.


  • In rural zones (outside the UGA), the maximum size increases to 1,250 square feet.


  • Only one ADU is permitted per lot of record (either attached or detached).

  • On lots smaller than 1 acre, detached accessory structures (including garages and workshops) cannot exceed 2,000 sq ft, excluding the ADU itself.


  • Pierce County is currently reviewing housing code updates to expand flexibility and support more ADU development.


    Pierce County Housing Code Update Presentation, 2024

Recent Posts

See All
DADU Regulations | City of Tacoma

On legally established lots in residential zones permitting single-family dwellings (and some mixed zones), the city allows up to two ADUs  per lot (either attached or detached) as an accessory use to

 
 
 
ADU regulations | City of Everett

The maximum floor area  for an ADU (attached or detached) is 1,000 square feet . Up to two ADUs  may be allowed on a single lot in certain residential zones under the city’s Growth Management Act (GMA

 
 
 

Comments

bottom of page