
Green Galaxy Prefab ADUs, CA
Prefab ADUs and manufactured homes from Green Galaxy in Santa Clara, CA. Compare floor plans and prices and see what fits your property.
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The story behind the smarter building solutions that give you superior quality homes at lower prices, in less time.
“As a former United States Navy veteran, my commitment to excellence, honesty, integrity and performance actually mean something. Green Galaxy Builders, Inc. and our entire team promise to live by these words every day, and we would be honored to work with you.”
Michael McCarthy, Founder & President

Michael started looking for a more efficient way to build high-quality, affordable homes. That's when he found modular building, and in particular Structural Insulated Panels (SIPs).
“Like the Ford assembly line, I could see how this factory method could consistently produce superior quality, more comfortable, energy efficient homes, faster and for a lower price,” he recalls. His first project in 2013 proved him right.
Unhappy with the lack of transparency and inflexible contracts other builders forced on clients, he founded his own company grounded in excellence and integrity.

Michael developed his own approach to combining traditional stick building (where appropriate) with Structural Insulated Panels and modular designs, plus a two-phase process (structure, then finishes) that gives clients full control.
“Our methods are so economical and efficient, many customers find their new homes are valued at double or triple what they cost to construct.”
An experienced builder can build a good home from time to time. Excellence on every project takes more.
We've developed an optimal way to do everything: a workflow that gives the best result in the shortest time at the least cost, with every step monitored by our fastidious supervisor.
Finding good staff is one of the biggest challenges in business. We keep the best people by sharing profits, so everyone who works on your home has a vested interest in doing their very best.
We'd love to hear the vision you have for your new home. Free and without obligation, we'll share 20+ years of experience to help you get a superior home for less, in less time.
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Dealer License #: DL1256278