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South Bay Area ADU Builders

Having an accessory dwelling unit (ADU) on your property gives you the space you need for family visits, work and leisure activities. Valley Home Builders works within the South Bay area of California to oversee your expansion project from start to finish. Allow our experts to help you design and construct a new ADU or addition for your property.

Custom ADU Design and Build Services

Valley Home Builders understands that your home vision is exclusive to your lifestyle and routine. Therefore, we take the time to come up with blueprints for a one-of-a-kind structure that may sit independently or attached to your home. Our ADUs meet your exact size and layout specifications. We stand out from other California-based ADU builders because we complete the work for your project in-house for unmatched results.


ADU living room with skylights
Custom Builds Made for You

Our ADU Design and Build Process

A beautiful accessory dwelling unit starts with the professionals at Valley Home Builders. We follow a multi-step process to make your residential dream a reality in the South Bay area. We are a custom ADU builder that always puts you and your family first. Our staff comes up with a solution for your property on a timeline that you can feel comfortable with.

Valley Home Builders starts your ADU project by visiting your property to learn more about your vision. You can work with one of our representatives to schedule an initial visit at a time convenient for you. Once we learn the scope of the project, we will have you come into our main office in Santa Clara where we will organize a design contract. This takes a maximum of three months to complete before we build. We can work off existing design plans or start from square one.

Once we finish the design contract, our interior designers and project developers will come up with an accurate estimate for the entire cost of the ADU plan. Thanks to our value engineering team, we can tailor your design to fit your exact budget while maintaining quality. Finally, Valley Home Builders seeks your approval for the ADU project, and construction begins on the specified date.

We loved their detailed contract which left nothing to speculate.
Mr. M.P.
Valley Home Builders worked with us to deliver the ADU of our dreams within our budget.
Mrs. Garcia
We just completed an ADU (additional dwelling unit) on our lot with VHB. One way you can tell a project is successful is when at its completion you feel you made the right choice for your builder.

Our Past Projects

Valley Home Builders is proud of the projects we have completed throughout our service area. As an experienced ADU builder in the South Bay area, our professionals aim to enhance your current living space for 100% satisfaction. Our team takes on a variety of ADU projects yearly, and no two structures look exactly the same so that your property is truly unique.

With our assistance, you can streamline the ADU building process and acquire the permits necessary to construct an accessory dwelling unit with zero disruptions. Valley Home Builders encourages you to look through our project gallery to see our past project results for yourself. 

We make it possible to boost the value of your residential property. Our California ADU builders have finished basement and garage conversions as well as attached and detached ADU structures to create flexible living spaces.

The experts at Valley Home Builders construct accessory dwelling units for your precise applications. Tell us more about your ideas, and we will come up with a design for aging parents, young children, yoga and fitness studios, art projects, music and other priorities in your life. It is our mission to design and construct an ADU space that you can use year-round. Incorporate as much natural light as you like with options for decorative windows, entry doors and skylights that form a warm environment.

Stay Up To Date On Your Project

Customer Online Portal

What’s Included:
  • Pay Invoices
  • See What’s Coming Up On Your Project Schedule
  • Access Project Plans And Updates
  • View Project Progression Photos
  • E-Mailbox For Quick And Easy Communication
  • Access Project Timeline
Schedule A Free Consultation

Build Your Dreams

The team at Valley Home Builders will work with you to create the ADU of your dreams. Whether you're in San Mateo, San Jose, or anywhere throughout the South Bay area, contact Valley Home Builders for professional ADU building services.

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Design Your Dreams Today

Schedule a Free Consultation With Valley Home Builders

Valley Home Builders focuses on your customer experience from the moment you reach out to us. Few custom ADU builders in the South Bay area of California, give you a one-year guarantee on craftsmanship as we do. We remain transparent throughout the design, planning and construction stages and will answer any questions you have about your accessory dwelling unit prior to completion.

Schedue a free consultation today to start your project with Valley Home Builders.

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