Cambridge Apartments

This project is a substantial renovation and seismic retrofit of Seattle’s first concrete high-rise apartment building, a historic 1923, 10 story apartment building next to I5 in downtown Seattle.

The building has 157 units of affordable housing and was partially occupied throughout construction.


Seattle, WA
Bellwether Housing
SMR Architects
William Wright

Initially a plumbing retrofit project, during preconstruction our team worked with Bellwether to incorporate additional scope.

As more funding was acquired, we updated the budget and incorporated a scope of work that maximized the value of the amount of funding raised while also meeting jurisdictional code requirements for high-rise buildings.

Our final scope of work for the project included:

– New plumbing systems
– Installation of 6 concrete footings and shear walls from existing foundation footings to 9th floor for seismic (including significant excavation inside the building for the new shear wall footings)
– Two full elevator modernizations
– New emergency generator installation
– Replacement and reconfiguration of electrical, fire alarm and low voltage cabling in corridors
– New ERV system for common areas
– New stairway and elevator pressurization
– Fire alarm system replacement
– New fire sprinkler system
– New DAS system
– Complete low voltage replacement
– New water service to building (required by new fire sprinkler system)
– New cabinets, countertops, appliances, and plumbing fixtures in units
– New common area flooring and complete interior repaint
– Lobby restoration included demolition of existing offices to restore lobby to original condition (polish terrazzo floors and storefront glazing for offices show restored historic features inside)
– New windows (that meet National Park Service historic requirements)
– Conversion of eight units to meet Type A accessibility.

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Project Tour : Cambridge Apartments Renovation

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