About us

Established in 1999 by David Ross Mulligan, Builders of Marin is a full-service building company based in Marin County. We collaborate with homeowners in Marin and the greater North Bay to translate their vision into a reality with a focus on customer satisfaction and unparalleled craftsmanship. A construction firm with a hands-on approach, Builders of Marin specializes in full home renovations, planning and design, additions, kitchen and bath renovations, and home improvement.

What our clients say

“We are absolutely thrilled with the brilliant result that David Mulligan and Builders of Marin achieved in remodeling our three bathrooms, and were we to do the whole thing over again, we’d hire him in a heartbeat.” — Ritter

“There isn’t a more honest or reliable contractor out there. David is not satisfied unless the client is satisfied.” — Porter

“David is authentic and genuine. His references are solid. His communication style is straightforward and actionable. David takes pride in providing excellent service.” — Whitecar

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