
Building permit records
Residential
The Permitting Records Center can access residential building permits back to approximately 1970. Some of the associated plans/architectural drawings for permitted residential structures also may be available back to 1987.
Homeowners looking to reproduce building plans/architectural drawings that are not available at Permitting will need to hire a private architect to develop new drawings.
In addition to single family homes, other types of residential permits available back to 1970 and some associated architectural drawings/building plans available back to 1987 include:
- decks
- retaining walls
- garages and carports
- additions
- storage buildings
- pools
- modular and mobile homes.
For all of these permit types, plans are forwarded to the Records Center as soon as the permit is issued. The associated permit is then forwarded to the Records Center once the project has completed the inspection phase.
Commercial
For commercial structures, the Permitting Records Center can access the building permit, as well as some associated architectural drawings/plans, and also review notes from various review disciplines (e.g., drainage, critical areas) back to approximately 1970.
Related topics
- King County historical property records
- Frequently requested county records
- Recorder's Office records search
- Assessor property search
- Property research & maps
- Roads services map & records center
- WA State Archives & Puget Sound Regional Branch (external links)