Custom ADU Builders in The Bay Area

Add space and value to your home with the best ADU contractors in the Bay Area

Why People Are Building ADUS in The Bay Area

Property value increase in San Jose
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Increase in total living space with ADUs in San Jose
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Of ADU owners in San Jose report increased property value
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Expand and Enhance your Bay Area Home with Custom ADU Solutions

Benefits of Adding an ADU to Your Bay Area Home

Discover the numerous benefits of adding an Alternative Dwelling Unit (ADU) to your property in the Bay Area with the expertise of Valley Builders. As trusted ADU contractors, we recognize the value and advantages that an ADU can provide. With our meticulous attention to detail, superior craftsmanship, and unwavering dedication to client satisfaction, we will bring your ADU vision to life while enhancing the value of your property in the area.

Unlock the Potential of Your Bay Area Property with an Accessory Dwelling Unit

Did you know? A detached ADU can increase your property value by as much as 30% in California.

Improved Property Value

The demand for housing in the Bay Area is high and the addition of an ADU provides a desirable feature for potential buyers or renters. In fact, adding an ADU to your Bay Area property can significantly increase its value–even up to 30%! 

Multiple Uses for ADUs

ADUs offer homeowners the flexibility to accommodate changing living arrangements and evolving family needs. They offer a separate living space that can be utilized for various purposes, such as a rental unit, a guest house, or a home office.

Flexible Living Space

Whether you have elderly parents, adult children, or extended family members, an ADU provides a self-contained living space that promotes independence and privacy while keeping loved ones close by. ADUs allow for flexible living arrangements that can adapt to different stages of life, ensuring a comfortable and harmonious living environment for everyone involved.

Our ADU Building Process


Every engagement starts with an in-home consultation meeting to discuss your goals, desired results, and budget for your unique ADU. With your input, we create a specific project’s scope and agreement.


ADU preconstruction kicks off with sessions to uncover the details of usage, color, light, and texture to create a space that thrills you. This phase includes material selection, planning, and permits relevant to the Bay Area.


During the development phase, our expert team at Valley Boutique Builders manages every detail of the accessory dwelling unit construction process, ensuring a seamless and efficient progression of your project.


The finishing touch is coordinating the last details, final inspections, and walkthrough with you - and then handing off your beautifully customized ADU to suit your unique needs.



“Valley Boutique Builders exceeded our expectations when they built an ADU on our property. From the initial consultation to the final touches, their team was professional, skilled, and attentive to detail. The ADU not only increased the value of our property but also provided a separate space for our aging parents to live comfortably while maintaining their privacy. We highly recommend Valley Builders for their outstanding craftsmanship and dedication to customer satisfaction.”

John and Sarah, San Jose, CA

“We couldn’t be happier with the ADU built by Valley Boutique Builders. Their expertise in ADU construction and their understanding of San Jose’s regulations made the entire process seamless. The quality of their workmanship is evident in every aspect of the ADU. It has not only added value to our property but has also become a great source of rental income. Valley Builders truly delivered on their promise and transformed our vision into a reality. Thank you for creating a beautiful and functional ADU that exceeded our expectations!”

Mike and Lisa, San Jose, CA

“Valley Boutique Builders turned our backyard in San Jose into an incredible living space by building an ADU. They were attentive to our needs, collaborated closely with us throughout the project, and delivered exceptional results. The ADU provides a versatile space that we use as a home office and guest suite. The craftsmanship and attention to detail are impeccable, and it seamlessly blends with our existing home. Valley Builders’ commitment to quality and customer satisfaction is commendable, and we highly recommend them for anyone considering an ADU construction.”

Mark and Emily, San Jose, CA

Our backyard had been trasformed into a stunning ADU thats exceeded our expectations. From the initial design phase to the final touches, the Valley Boutique Builders team showed exceptional professionalism and craftsmanship. The ADU has become a valuable asset, providing us with additional living space and a rental income stream. We are grateful for Valley Builders’ expertise and attention to detail throughout the construction process. We highly recommend them to anyone looking for top-notch ADU builders in the Bay Area.”

Sarah Davidson, San Jose, CA

“We are extremely pleased with the ADU built by Valley Boutique Builders. The quality of their work is exceptional, and the attention to detail is evident in every corner of the ADU. It has added significant value to our property and provides a comfortable and functional living space. Valley Builders’ commitment to customer satisfaction is remarkable, and we couldn’t be happier with the outcome. Thank you”

Jennifer and Michael, San Jose, CA

“Thanks to Valley Builders and their exceptional craftsmanship, we were able to sell our home in San Jose at a higher value and in record time. The backyard ADU they built became a standout feature of our property, attracting potential buyers and setting our home apart from the competition. Not only did it increase the overall value of our property, but it also appealed to buyers looking for versatile living spaces or rental income opportunities. We were thrilled with the outcome and highly recommend their services to anyone considering any construction project.”

Mark and Emily, San Jose, CA

Every ADU is different

Find inspiration in our recently completed projects.

Why Build Your ADU
with Valley Boutique Builders

As experienced Bay Area ADU contractors, we have a thorough understanding of the local regulations and building codes. We can guide you through the permit application process, ensuring that all necessary documentation and requirements are met to obtain the required permits.

Expertise and Experience
Customized Design Solutions
Quality Craftsmanship

Learn More About Accessory Dwelling Units

An ADU, or Alternative Dwelling Unit, is a separate residence located on the same property as the primary house. ADUs are built to provide extra living space and have several potential functions, including but not limited to: housing family members, generating rental income, operating as a home office, or accommodating guests. An ADU is distinct from a standard home addition in that it functions as an independent living space, complete with its own front door, kitchen, bathroom, and utilities.

The cost of a permit for an ADU in the Bay Area can vary depending on several factors, including the size and complexity of the project. Permit fees typically cover plan reviews, inspections, and other administrative costs. At Valley Boutique Builders, we work closely with our clients to provide accurate cost estimates, including permit fees, during the preconstruction phase. Our goal is to ensure transparency and help you make informed decisions about your ADU project.

The cost to build an ADU can vary based on several factors, such as the size, design, materials used, and site-specific considerations. While each project is unique, building an ADU is generally a cost-effective way to add living space to your property compared to traditional home additions. Our team of experts at Valley Boutique Builders will work closely with you to understand your goals and budget, providing you with a detailed cost estimate tailored to your specific project. We strive to deliver exceptional value by optimizing the design and construction process to ensure your ADU is built within your budget.

Together we'll bring your ADU vision to life and create a space that embodies your style and enhances your lifestyle.

Are you ready to unlock the potential of your Bay Area ADU?

Fill out the form, or call us to set up a free in-home consultation.
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