San Francisco Bay Area
Home Additions

Thoughtfully designed to create more space

Growing family, a tiny kitchen, or the spacious master bathroom you’ve always dreamed of are all reasons to build an addition onto your home.  Regardless of the reasoning, our team can take your home addition vision to the next level by creating a space that feels and looks like it was always meant to be there.

Since 2011, Watermark Builders has been a leading provider of Bay Area home additions. Elegantly crafting beautiful and functional spaces that seamlessly integrate with your existing home. If you’re looking to expand your San Francisco Bay Area home, contact our team today for a free consultation and turn your dream into reality.

A home addition bedroom with sliding glass doors.
Sun room home addition
Close up view of a mantel from a custom home remodel in the Bay Area.
Up close details of a custom built stair case banister

Seamlessly Designed Bay Area Home Additions

We work with our clients to meticulously design and plan home additions and detached structures that not only meet expectations of beauty and style, but also provide the space and functionality our clients are looking for. With decades of experience and detailed workmanship, we will work with you to bring new life to your home through creative solutions and custom designs.

We remodeled homes in the following Bay Area communities and surrounding areas:

Throughout the project, we were well informed of the work that was scheduled to be done each week. Whether it was work being done by Watermark, or one of their subcontractors, the craftsmanship and attention to detail at every phase of the project was exceptional.

Our Approach

Design-build for a more streamlined project


Every Bay Area home additions starts with a great design, and every great design starts with listening. By offering complete in-house design-build services, we promise to listen to your needs and vision for your home throughout the entire project providing creative solutions, unique details and lasting finishes. 

Get Started

Let's build something amazing together.

Discover what Watermark Builders can do for you and your home. We’d love to talk about your vision for your project and see if our brand of construction is what you are looking for.