Grand Street Commons

Grand Street Commons is a three-building, mixed-income community delivered on a prominent Seattle infill site through a partnership that combines market-rate and affordable housing in one neighborhood-scale development. Grand Street East and West include 569 units, while Grand Street South (Tahoma Valley) delivers 206 units of low-income/affordable housing, concentrating the project’s affordable homes within the South building. The scale of work demanded disciplined logistics planning, multi-phase sequencing, and steady coordination as multiple buildings and public-facing spaces advanced in parallel.

Ground conditions were one of the project’s biggest early hurdles. The team planned and executed extensive contaminated soil remediation and managed schedule impacts tied to a concrete strike, protecting momentum as the project progressed. Mid-project, a gypcrete shortage required creative resequencing and problem solving to keep interior progress on track.

The project also included a large, shared plaza and required street and sidewalk improvements that depended on city approvals. When that work was delayed, the team reworked access and sequencing to keep the buildings on track while delivering the plaza and street improvements alongside adjacent active construction.