After nearly two decades of sitting idle next to light rail, two Sound Transit parcels beside Mount Baker Station are finally inching toward redevelopment, a shift that could remake a quiet stretch of Rainier Valley that has seen little recent housing investment. The two properties are expected to go in very different directions, with one reserved for affordable homeownership and the other eyed for market rate development, and planners say the outcome will hinge on a mix of engineering realities, zoning limits and subsidy dollars.
According to Sound Transit, the agency owns roughly two acres near the former UW Laundry site and is still defining goals for transit oriented development at what it calls the East Portal. The land previously served as construction staging, and agency staff say community engagement and due diligence will shape how and when the sites are ultimately offered to builders.
Board Vote Puts Long Dormant Parcels In Play
This week, the Sound Transit system expansion committee signed off on a resolution that moves the two Mount Baker parcels toward being declared surplus and preps them for eventual offering, as reported by The Urbanist. Per that reporting, the smaller north parcel near S McClellan Street is slated for transfer to the City of Seattle’s Office of Housing at a discount, with the expectation that it could host roughly four to eight townhomes or stacked flats for affordable homeownership. The much larger south parcel, about 100,000 square feet, would be offered for market rate development and comes with a set of headaches, including steep slopes and an environmentally critical area designation that will complicate what can actually be built.
Zoning And Scale
Both sites sit in the SM NR 95 zoning, which allows buildings up to 95 feet tall and an elevated floor area ratio that effectively works out to a FAR of about 6.25 under current code. On paper, that means a 100,000 square foot site could translate into roughly 625,000 square feet of building area, but access challenges, grading and required mitigation will all cut into that theoretical capacity. The details are laid out in the municipal code at Municode.
How It Fits Into Seattle's Housing Push
The Mount Baker moves arrive as the City of Seattle has already tapped El Centro de la Raza and Mercy Housing Northwest to redevelop the adjacent UW Laundry site into a two phase project that is expected to deliver roughly 431 affordable homes and an early learning center, according to the Seattle Office of Housing. Per Sound Transit's latest transit oriented development report, the agency’s program has enabled roughly 3,700 homes that are either built or in the pipeline across the region.
From here, local leaders say the big questions are when and how the land is offered, what engineering studies uncover about the trickier south lot and which developers are willing to pencil out a project in current market conditions. The steeper, taller site may have the biggest potential, but how fast it moves will depend heavily on construction costs, demand and the availability of public subsidy.
