Cascade Built
Seattle construction firm specializing in Passive House multifamily buildings and airtight urban housing.
What they're known for
Cascade Built constructed the 66-unit Phius-certified Ellie Passivhaus, extending its Seattle passive-building practice beyond individual homes.
Cascade Built develops and constructs high-performance residential buildings in Seattle, including multifamily projects designed to Passive House standards. Its work emphasizes airtight envelopes, continuous insulation, reduced thermal bridging, efficient glazing and heat-recovery ventilation. The firm's portfolio includes View Haus 5, Solis, Pax Futura and Ellie Passivhaus. Phius lists the 66-unit Ellie project as certified, with Cascade Built as its construction company; performance claims for other buildings require project-specific evidence.
Capabilities
- Passive House construction
- Multifamily residential construction
- High Performance building envelopes
- Airtightness and thermal bridge detailing
- Construction management
- HVAC and ventilation coordination
Performance focus
- Passive House
- Airtightness
- Thermal bridge reduction
- Heat recovery ventilation
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Sources
Facts verified November 2026. Compound is an independent editorial directory and is not affiliated with this company unless stated.