The COLLECTIVE ADVANTAGE is the collaboration of an experienced Passive House designer, a tested and versatile prefabricated building system, and innovative renewable energy solutions.

The result is attainable, high performance homes

Passive house design & building

+ zero energy use solutions


Experienced Passive House design

Brett Sichello Design specializes in high-performance modern home design.

Off site construction

Collective Carpentry builds high quality building envelopes and components in their factory.

innovative renewable energy solutions

Greenman Sustainable plugs you into the sun to reduce your bills with energy you can depend on.