Lounsbury Built

About Us

Where Craftsmanship Meets Vision

At Lounsbury Built, we partner with discerning homeowners and architects to bring thoughtful, design-forward spaces to life. Every detail is considered. Every finish is intentional. Because luxury isn't just what you build, it's how you build it.

Founded by Mark Lounsbury, Lounsbury Built emerged from a belief that construction should be as thoughtful and intentional as the homes we build. What began as a passion for craftsmanship and problem-solving has grown into a boutique residential firm serving clients throughout Marin County and beyond.

Our work lives at the intersection of design, construction, and deep client collaboration. With roots in high-end remodels and custom homes, we've developed a process that emphasizes clarity, trust, and hands-on leadership. Every detail matters from the first preconstruction call to the final touch of trim because we know that building a home is about far more than just materials.

Today, Lounsbury Built is proud to lead projects that reflect each client's vision, values, and lifestyle. We specialize in architect-driven designs, sustainable practices, and tailored project management that ensures a refined experience from start to finish.

Our growth is fueled by relationships with our clients, trade partners, and team and a belief that great homes come from listening well, building smart, and delivering on promises.