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Haas Builders is a professionally accredited green builder in Big Sky, Montana
Since 1989, Haas Builders has provided cost effective, quality custom home building solutions to clients in the mountain west.
Owned and operated by John Haas, Haas Builders is a boutique custom home building company located in Big Sky, Montana. From complex and finely detailed new residences to simple, straightforward remodels or renovations – we have the expertise to complete any home construction project.

We are certified and accredited in the nation’s top green building sectors and can provide earth-friendly solutions to reduce environmental impact throughout your construction project.

NAHB Certified Green Builder
LEED Certification – Leadership in Energy & Environmental Design
Certified Energy Star Home Builder
Member of the US Green Building Council
Member of the National Association of Home Builders Green Building Council