Hours: Mon-Fri 8-5 | Sat 10-4 | Closed Sunday

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About Us

We take pride in our work, who we are, and what we stand for. 25 years of work, over 10,000 happy customers enjoying lifetime warranties, a national award for installation excellence, and consistent top ratings are proof of our promise of best value. We’re local, not a chain, and we don’t have lumberyards or other side businesses to distract us: just the best windows, doors, and siding projects available. Period.

We enjoy high repeat business and we’re environmentally responsible (being green is important to us). We’re also strongly community-oriented, serving customers close by in Marin, Sonoma, Napa, San Francisco, and the near East Bay.

charles windows team

charles windows crew

Lifetime Warranty

Lifetime Care

Our care doesn’t stop after the installation. When you choose Charles, you have a no-cost partner for life.

our ratings


We are “top-rated” by the home improvement industry and other professional organizations.

We actively champion local community.

pacifics communityEverything we do is inspired by our commitment to community, from our customer service to our work ethic to the homes we help protect and beautify in Marin, Sonoma, Napa, San Francisco, and the near East Bay.

But for us, community goes way beyond the work we do for money. We feel very strongly about giving back to our local community, and championing community and family organizations, like the two local professional baseball teams the San Rafael Pacifics and the Sonoma Stompers. We also actively support the local presence of the nationally-acclaimed design-based youth education program Studio H, led by Project H. And we offer our showroom as a venue for community group events.

We have big plans for more community events and partnerships in the future. If you want to be a part of our community vision, we invite you to contact us today.

Visit our showroom in San Rafael.