ADU Home Contractors

Adding space and value to your home
Why Home Additions Make Sense
Property value increase
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average monthly rental income
$ 0
Return on investment (ROI)
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Expand with Elegance with Valley Boutique Builders

Expand Your Space & Discover the Benefits of an ADU

Discover the numerous benefits of adding an Alternative Dwelling Unit (ADU) to your property with the expertise of Valley Boutique Builders. As trusted ADU contractors, we recognize the value and advantages that a backyard 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.

Get the most out of your ADU

Discover the Benefits of ADUs Versatility, Functionality, and Value.

Added Property Value

An ADU is an excellent investment that can significantly increase the value of your property. It provides potential buyers with the flexibility of additional living space. Renting out your ADU can generate a steady income stream, helping you offset mortgage payments or supplement your monthly earnings.

Flexible Living Space

An Additional Dwelling Unit offers a flexible solution for accommodating changing family dynamics. You have the freedom to design and customize the space to suit your unique needs and lifestyle. ADUs can serve a variety of purposes, such as a home office, art studio, gym, a guest house, or accommodate aging or adult family members.

Enhance Your Home with Versatile ADUs

ADUs promote sustainable living by maximizing the use of existing land and resources. By adding an ADU to your property, you can benefit from added property value while creating a versatile and valuable space for yourself and your family.

Our Process


We begin every project with an in-depth consultation to understand your goals, preferences, and budget. Together, we define the scope and agreement for your project.


Our preconstruction phase involves detailed sessions to capture your vision, exploring elements such as the usage of colors, lighting, and textures. We carefully select materials, plan the project, and obtain necessary permits.


At Valley Boutique Builders, our experienced team takes charge of managing all aspects of the ADU construction process. From the beginning to the final touches, we ensure a smooth and efficient progression of your ADU 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.



We had no idea how much it cost to build ADUs when my mother in law came to stay with us. We all desperately needed our own space and speaking to the team put our minds at ease as it was actually affordable to have an ADU done. Plus the process was so unbelievably simple. The team listened to what we needed and everything was done on time and within budget. She loves her new space and now we are all happy with our privacy.

Thomas G.

We chose Valley Boutique Builders for our home remodeling project, and it was the best decision we made. Their knowledge, skill, and personal attentiveness were evident from the start. They guided us through the entire process, offering valuable insights when we wanted something that wouldn’t be to their standards and they delivered outstanding results. Our home’s new look is just wonderful and we couldn’t be happier.

Andrew and Megan D.

My new bathroom is absolutely luxurious! The attention to detail is evident throughout the entire bathroom. A special mention goes to the elegant tiles and the meticulous workmanship. Thanks again for an incredible job.

Emily S.
Every project is different
Find inspiration for yours by viewing recently completed projects.

why us

Choose Valley Boutique Builders for your ADU project and benefit from our expertise in interior design and construction management. Our proven design-build process ensures that your ADU is tailored to your goals, budget, and timeline. With personalized attention and exceptional service, we keep you informed and involved throughout the entire process. Count on us to deliver a structurally sound and stunning ADU that exceeds your expectations, creating a remarkable living space.

Permit Application

We guide you through a seamless permit application process.

Customized Design

We make your dream a reality, merging bespoke design with excellent ADU construction.

Build on Budget

Working closely with your to meet your needs, on time and on budget.


An Alternative Dwelling Unit, or ADU, is a self-contained living unit that is secondary to the main house on a residential property. It is also commonly known as a granny flat, in-law suite, or backyard cottage. ADUs are designed to provide additional living space and can be used for various purposes, such as housing family members, generating rental income, or serving as a home office or guest house. The key difference between an ADU and a traditional home addition is that ADUs are separate living units with their own entrance, kitchen, bathroom, and utilities.

Yes, obtaining a permit is necessary for building an ADU in the Bay Area. The city of San Jose requires that all ADUs meet the California Building Code and the San Jose Municipal Code. As experienced 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

The price of a permit for an ADU 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.

Embark on a transformative journey with us and together, we will bring your vision to life and create a space that embodies your style and enhances your lifestyle.
Are you ready to unlock the potential of your home?
Fill out the form, or call us to set up a free in-home consultation.
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