Permit Types

Upload Submittal Documents to the Permit Submittal Portal.

Review Permit Type Below

If your project type is not listed, follow the general instructions for uploading a permit application to the Permit Submittal Portal here.

Note: This page is still under construction. If you cannot find the information you are seeking, please call 206-275-7605 or send an email to epermit.tech@mercerisland.gov.

Residential Building Permits

Submittal requirements and application instructions for various building permit applications.

Commercial Building Permits

Submittal requirements and application instructions for various building permit applications.

Decks

Basic Decks (decks not located in geologically hazardous areas, or within critical area buffers) may qualify as simple projects.
If not a simple deck they will be routed normally.

Docks Residential Docks and alterations

The Mercer Island Community Planning and Development Department’s Building team has the following guidelines and expectations for permit applications for residential dock repairs, alterations, and new construction.

Electrical Permits Read More

Fire Permits Required Forms and Documents

Prepare your plans, permit forms, and supplemental information to allow for electronic plan review. The following documents are required:

Fuel Tank Removal Permits Fuel Tank Removal Permits can be obtained by emailing the permit application to epermit.tech@mercerisland.gov.

Land Use Applications

Land Use Application Forms and Submittal Requirements

Mechanical Permits Read More

Plumbing Permits Read More

Right of Way Use Permits

A Right of Way Use permit is required for work in the right of way (ROW) such as excavating, altering, placing structures, blocking roadways or sidewalks, materials delivery for construction sites, or other activities in the ROW. MICC 19.09.060 regulates ROW use. Work hours are generally 9 am to 3:30 pm in the street on school days. Work hours on school bus routes may be further restricted.

Roofing Permits

Information about when a re-roof permit is required and how to obtain one.

Solar Power Permits

The City of Mercer Island has embraced solar ever since a small 2014 demonstration project at the Community and Event Center raised awareness. Several City installation campaigns have led to a significant increase in the adoption of solar all over the Island, and arrays can now be found on over 223 homes, businesses, schools, and churches. Learn more about the City's solar program.

Learn more about other green building concepts.

Sewer Repair Permits Single Family Side Sewer Repair Permits

The following work can be conducted with an self issued Side Sewer Repair Only permit obtained online at www.mybuildingpermit.com. This permit is only available for Single Family Residences. All other side sewer permits will require plan review.

Tree Permits

Information about how to obtain a tree permit. Do I need a tree permit? The answer is almost always yes.

Wet Season Work Waiver - Seasonal Development Limitation

Land clearing, grading, filling, and foundation work are not permitted between October 1 and April 1 within landslide hazard areas, or if more than 2,000 square feet of disturbance is proposed in an erosion hazard area.

Permit Types

Review Permit Type Below

Contact Information