Boat Trailer Parking Regulations
FAQ’s for Boat/Trailer parking on Mercer Island:
Frequently Asked Questions
Ordinance No. 09C-12, codified at MICC 10.36.229, applies to parking of a boat and/or trailer alongside an owner’s property, provided the boat and/or trailer is no more than 9 feet in height or 27 feet in length. The boat and/or trailer may remain in a legal parking area alongside the registered owner’s property up to 72 hours, consistent with MICC 10.36.225, after which time the boat and/or trailer may be cited with a parking infraction and/or towed. MICC 10.36.225 and .229(B)(5) should be read together; parking regulations therefore apply even to trailers without boats.
You may park your boat and/or trailer on your own property. There are also various regional storage facilities such as outdoor parked storage, dry stacked storage, or indoor warehouse storage.
Questions on interpretation of this ordinance were brought to our attention by citizens in early 2015. Based on legislative history research, including reviewing audio records from the applicable City Council meetings of 2009, it was determined that the original legislative intent of the City Council was to allow limited boat and/or trailer parking alongside the registered owner’s property subject to the 72-hour rule (October 2009 [AB 4470; Ord. No. 09C-12]).
The legislative history determined the true intent of the ordinance is to allow boat and/or trailer parking consistent with MICC 10.36.229(B)(5) and subject to the 72-hour restriction in MICC 10.36.225. It was also determined that the intent was for oversized vehicles that are boats on trailers or trailers alone to be allowed to park alongside the owner’s property as any other “vehicle” would be allowed to be parked. Currently, the time limit for continuous vehicle parking on City right-of-way (that is not otherwise posted) is a maximum of 72 hours.
Upcoming Events
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08/05/2025 - 5:00pm
Contact Information
Police Department
9611 SE 36th Street
Mercer Island, WA 98040
Phone: (206) 275-7610
Email: mi-records@mercerisland.gov
In an Emergency, call 911
For our Non-Emergency 24/7 dispatch center, call: (425) 577-5656
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