Birdsmouth Design-Build
Portland design-build practice focused on Passive House and high-performance homes.
What they're known for
An Oregon firm integrating architecture and construction around airtightness, energy, ventilation, and durable enclosure design.
Birdsmouth Design-Build is a Portland-area architecture and construction firm specializing in high-performance residential work. The practice integrates design and building around airtight envelopes, thermal performance, ventilation, low-energy systems, and verified project standards. Its Clackamas River Passive House is independently listed by Phius and documents the firm's role across architecture, mechanical-system design, and construction. Birdsmouth is a strong firm-side entry because the performance work is embedded in both design and execution.
Capabilities
- Architectural Design
- Custom Construction
- Deep-Energy Retrofit
Performance focus
- Passive House
- Indoor Air
- Healthy Materials
- Low-Carbon Construction
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Sources
Facts verified September 2026. Compound is an independent editorial directory and is not affiliated with this company unless stated.