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Commission reviews draft station subarea goals for light-rail area at north end of Mercer Island
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Summary
Principal planner Adam Zach presented draft goals and policies for a station subarea plan focused on the light-rail station at Mercer Island's north end, describing a two-phase approach that limits phase 1 changes to the town center and adjacent multifamily zones and defers broader TOD/HB 1491 compliance and infrastructure studies to phase 2 through 2029.
Adam Zach, Mercer Island's principal planner, briefed the Planning Commission April 29 on draft goals and policies for a station subarea plan that covers the area around the light-rail station at the north end of Mercer Island.
"The phase 1 section of the sub area plan is where we will comply with the hearings board decision," Zach said, describing a two‑phase approach: phase 1 addresses the existing town center and adjacent multifamily zones with required subarea-plan elements and potential upzones; phase 2 will consider a larger station area and additional state requirements under the TOD bill (House Bill 1491) and is scheduled to be completed following adoption of the comprehensive plan, through 2029.
Zach walked the commission through the draft's components: goals (what the plan aims to achieve), policies (how to achieve those goals), an implementation program listing actions and phasing, and placeholder sections for infrastructure analyses (transportation, capital facilities, utilities) that will be provided later. He flagged several substantive items staff expects commissioners to review, including proposed rezone and consolidation of town-center subareas, an inclusionary-zoning requirement with a fee-in-lieu option, and policy direction for surplus public property as potential affordable-housing sites.
Staff also noted the proposal to undertake an empirical parking study as part of phase 2, and described outreach and public-engagement policies included in the draft. Maps attached to the draft show a dark purple phase 1 area limited to town center and adjacent multifamily zones and a larger light-purple phase 2 study area.
The draft schedule calls for staff to publish the complete station subarea plan materials in the packet on May 11 and asked commissioners to submit comments on the full draft by the end of day May 11; staff will collate comments into a matrix. Infrastructure-capacity analyses are expected to be provided in mid-May and will be reviewed separately.
No formal action or vote on the plan took place at the April 29 meeting; the commission will continue weekly briefings and is scheduled to hold a public hearing on June 3 before completing its recommendation on June 10. Zach said staff will present any minor wording changes identified through legal review in next week's packet.

