Building Permits, Plan Review, & Inspections
The Development Services Group department is made up of the planning and building departments. While staff works together, they serve different functions. The planning team reviews projects for zoning conformance and environmental impact. The building team reviews projects for structural, mechanical, plumbing and electrical compliance.
a) ** MANDATORY RECYCLING **
Effective immediately, all recyclable materials from construction and demolition (C & D) are required to be recycled at a King County Designated Facility. A list of designated facilities and details on the bans can be found on the King County C&D website. Click here for a printable poster.
b) **CONSTRUCTION CODE UPDATE**
Effective 7/1/2016 the 2015 edition of the Construction Code has been enforced by the City of Mercer Island. Click here for a list of significant changes to the current Codes
c) ** PLAN SUBMITTAL CHANGES **
Effective 7/1/2016, DSG is only accepting electronic plan submittals.
Exceptions: Plans which qualify for and are submitted during the over-the-counter (OTC) process (Monday & Wednesday) and ALL fire Permits. PLEASE NOTE: Effective March 27, 2017 Over the Counter Plan review will only be on Mondays and Wednesdays (no Fridays) beginning at 10:00 am. You must sign in prior to 10:45 am. This change is to offer customers a more consistent time for OTC review. These permits will require several minutes of brief, in-person review at the counter. For more information regarding OTC review click here.
Click here for video instructions on how to submit.
The Building Team
The building team creates and maintains a safe and pleasant physical environment on Mercer Island by: ensuring compliance with codes; providing a public information and permit counter; review of new construction; and issuing building permits and inspections.
The staff is committed to providing exceptional customer service. This team is trained in both code administration and permitting processes and is available to assist citizens or business owners with questions or concerns throughout the permit process.
Building and Permitting Topics:
Contact Development Services at 206.275.7605.
Construction hours on Mercer Island are Monday-Friday: 7 am - 10 pm and Saturday, Sunday and legal holidays: 9 am - 10 pm. Please see MICC 8.24.020 for further information.