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9611 SE 36th Street
Mercer Island, WA 98040
Phone: 206.275.7605
Fax: 206.275.7726
Email: midsg@mercergov.or. . .
Hours:

Open to the public:
8:30 AM - 5:00 PM
on Mon, Tue, Thu, & Fri

10:30 AM - 5:00 PM on Wed


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City of Mercer Island / Development Services - Building & Planning

Development Services - Building & Planning

Construction of Emergency Water Supply Line
Construction of Emergency Water Supply Line

The Development Services Group (DSG) on Mercer Island reviews all permits for land use and private development. It also manages capital improvement projects for the City. DSG is dedicated to helping the community achieve the vision of their future, their values and lifestyle. For the second year in a row, Seattle Magazine ranked Mercer Island as the number one suburban neighborhood out of the 50 Seattle-area suburban neighborhoods.

The Department is committed to preserving the unique island environment while encouraging sensitive and quality development. Work in the department is conducted by teams of employees organized by the product and service priorities of the City. These include Land Use/Planning, Building/Inspection, Utilities/Right of Way, and Permit Coordination.  See below to get the information you need! 


NOTE: Effective 7/1/2016, the 2015 edition of the Construction Codes shall be enforced by the City of Mercer Island.  Click here for a list of significant changes to the current Codes
 


NOTE: 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.
 



NOTE: Effective June 2017, new stormwater management regulations will be in place for private development projects.  Click here for more information.
 
 

Development and Construction Permit Fee Schedule

Building Permits and Information

Land Use Permits and Information

City Property Information Search

Utilities (Water, Sewer, and Storm Water) and Right of Way/Encroachment Permits and Information

Fire Permits and Information

Tree Permits and Information

Electric Vehicle Charging Station Information

Municipal Codes

Ombudsman


Green Building

Low Impact Development (LID)

Frequently Asked Questions

Contact Us


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.
 



News
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New Residential Development Standards Take Effect Today
Nov 1, 2017 Starting today, the code amendments adopted by the City Council in September will place new limits on house size and bulk, increase tree protection, reduce construction impacts in neighborhoods and allow for far fewer deviations and variances.  The new code provisions were...  Read more... 
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