Servicing LA & Bay Area | San Francisco | San Diego |  Santa Monica

All-in-One Custom Designs and Builds

Our ADUs and extensions are built on-site for more customizability and flexibility than mass produced prefabricated builds.

A Stress-Free Custom Design and Build Process


Answer a few quick questions about your dream build and meet with our architect to share your vision for the project.

Handles the Permitting
Your architectural and project management team will proactively work with the city to secure all necessary permits, so you can sit back and relax.
Receive a Quote
You’ll receive a detailed breakdown of expected costs and timelines as well as options for add-ons and upgraded materials.
We Start Building
Once you have approved the budget and timeline, our team will begin construction on your new build.

Featured Projects

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Frequently Asked Questions.

We currently operate in the San Francisco Bay Area, Santa Monica, San Diego and Los Angeles. For your projects outside of our current coverage zones, please reach out to an Hauser project planner and we will let you know when we expect to be in your area.

We provide homeowners with an all-inclusive custom design and build solution, including architectural design, kitchen and bathroom remodeling, ADUs, framing, flooring, painting and more. Moreover, we can handle a wide variety of custom projects that suit your needs.

No. All our ADUs are custom designed and built to each individual client’s specifications. If you prefer a prefab ADU, a prefabricated structure that is prebuilt in a factory and then reassembled or finished onsite, we work with several partners that can offer you an exclusive discount. We encourage you to speak with an Hauser project planner to discuss the pros and cons of custom designed ADUs versus prefab ADUs. We’re passionate about turning your ideas into reality!

Yes. Hauser is general contractor licensed in California (License #860130). When you work with Hauser, you are matched with a trusted, vetted local contractor. We partner only with contractors who uphold our rigorous construction standards and understand the unique nuances of their respective neighborhoods, such as knowing local regulations and having relationships with management companies.