Building in Mercer Island, WA
Your plans.
Mercer Island's building environment requires a contractor who has actually worked here — not one who is figuring out the Island's regulatory requirements for the first time on your project. We've built and remodeled on Mercer Island long enough to know its specific permit process, its tree code, its shoreline regulations, and what its community values in new construction and significant renovation.
The Island's Shoreline Master Program governs development within 200 feet of the Lake Washington shoreline, which encompasses a significant portion of residential Mercer Island. Setbacks, impervious surface ratios, and vegetation requirements under the SMP are real constraints that need to be incorporated into design from the beginning — not identified as problems after the permit application is submitted.
Mercer Island's tree preservation ordinance applies to trees at a lower diameter threshold than most surrounding jurisdictions. On properties with mature tree canopies — which describes most of the Island's residential lots — the site plan has to be designed around tree retention requirements rather than treating trees as a post-permit negotiation. We work with certified arborists early in pre-construction to establish the tree protection parameters that will govern the site design.
The quality of construction on Mercer Island is generally high, and the community notices when a project doesn't meet that standard. Our work here reflects the same approach we bring everywhere — honest about what projects will cost and how long they'll take, precise in execution, and accountable when something goes wrong.
Mercer Island's design review process for new construction visible from public right-of-way has specific community character standards that differ from standard DCI requirements. Architects new to the Island benefit from early pre-application engagement with the City to understand what the review board is looking for.
Share your plans or describe your project. We’ll tell you honestly what we can do, what it’s likely to cost, and what the timeline looks like.
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