​Swi Co Construction, Inc. is a family-owned general construction company with a longstanding reputation for quality throughout Sonoma, Napa, and Marin Counties. Founded in 1988 by Joseph Swicegood, the company began as a partnership and transitioned into a sole proprietorship in 2010. In 2022, Joe partnered with his son, Mike, to ensure Swi Co Construction’s legacy of reliability, integrity, and craftsmanship continues for generations to come.

With over 35 years of industry experience, Swi Co Construction, Inc. has the expertise to guide your project from initial concept through completion. We specialize in custom home construction and work closely with a trusted network of local design professionals to provide comprehensive design-build services for ground-up development of custom estates.

Our services include both residential and commercial construction, ranging from remodels and additions to full new-build projects. Our dedicated team is committed to delivering high-quality construction with an emphasis on transparency, clear communication, and client satisfaction at every stage of the process.