Highest Quality ADUs in San Jose & The Bay Area

Bringing Families Closer with Custom Living Spaces for Over 30 Years!

28 Reviews
22 Reviews
31 Reviews


Be amazed at your property’s potential. Our experts use advanced 3D visualization and 3D model building to turn your ideas into tangible ADU plans.


Leave the paperwork to us. Acton ADU simplifies the permitting process, allowing you to focus on what matters most while we handle the details.


With 30+ years of craftsmanship behind our belts, our skilled team creates your dream ADU – tailored to your family’s needs and designed for modern living.


Stan Acton’s lifelong journey as a builder began with a broken family heirloom, setting the stage for his enduring passion for craftsmanship. This led to the birth of Acton ADU, a Bay Area ADU company dedicated solely to designing and constructing ADUs. Our mission is to make ADUs accessible, enabling homeowners to create enduring housing solutions, foster family closeness, generate passive income, and contribute to responsible community growth.

3D Space Designing
Architectural Drawing
3D Model building
Building The Space
Years of Success
Families Served
New Projects Running

Walk through some of our work.



Harrington Family ADU, San Jose

Harrington Family Embraces Togetherness: Innovative San Jose ADU Keeps Generations Close and Comfortable The Harrington Family completed their San Jose, Accessory Dwelling Unit (ADU) to ensure…

Dzoung Family ADU in Milpitas, CA

Providing Comfort and Care: The Dzoung Family’s ADA-Optimized ADU for Aging Parent The Dzoung Family built their ADU to provide care for an aging parent with…

Galaway Family ADU

Blending Comfort, Functionality, and Style in a Comprehensive Home Remodel with ADU The Galway Family project was both a home remodel and ADU build, done simultaneously,…

Towner Family ADU

“From design to delivery, Acton embodies quality and trust.” – Eric Towner “Even when faced with the wettest winter in years (2016) they protected our home…

Mooney Family ADU

“I love it. I had a lot of ideas on what I wanted and I am extremely happy with how it turned out.” – Amanda M…

Lacore Family ADU

“They took my vision of having a salon in my back yard to fruition. I‘m so happy with the building. It’s beautiful inside and out.” –…

Tran Family ADU

Part 1: Motivations Jon Tran is a nurse with a home in San Jose with a big need for comfortable, accessible space for his sister, Christine,…

Gorgolinski Family ADU

“…wanted to also give special thanks to Stan (owner) for keeping his company together during these extremely difficult times. That is the type of company you…

Wolf-Nilson Family ADU

“I can‘t tell you how much I appreciate the work they’ve done for us!” – Suzanne Wolf “The Acton ADU staff was excellent and one of…

Breining Family ADU

“After meeting with several builders and ADU providers, including some really pushy ones, I went back to Acton ADU because they seemed the most honest and…

Parks Family ADU

“As a professional who really knows the world of ADUs, there was never any question. Acton ADU does it right.” – James Parks “The design is…

Nguyen Family ADU

Part 1: Motivations & Getting Started The Nguyen Family were new to the Almaden neighborhood in San Jose. Dr. Dan Nguyen’s parents were aging and his…

Allgood Family ADU

“We could not be happier. We have done several construction projects, but none were as smooth as this one. “ – Gwen Allgood “It was truly a…

Lebowitz Family ADU

Part 1: Motivations & Getting Started Rick and Kayla Lebowitz are parents of two little ones and working professionals living in Downtown San Jose. Kayla works…

MacLeod-Daniels Family ADU

“With Acton running the show, I didn’t have to deal with any issues.” – Alan Williams “I wanted a high quality ADU since I may decide…

Boehm Family ADU

“Acton ADU is an honest company, they are knowledgeable about all the city’s codes for ADUs.” – Paul Boehm “I did my research before I chose…
building an ADU

Fernández Family ADU

Part 1: Motivations The Fernández family has owned their home in San Jose, California for over 20 years. Diane is a nurse and a single mother…

Emerson Family ADU

“We are extremely happy with the quality and design of our little house!” – Holly Emerson “Everyone was responsive, on time, and kind and made us…

Rossi Family ADU

Part 1: Motivations Allie Rossi is a young professional and artist living in Los Altos, California. With steep rents in Palo Alto, she was looking for…

Kanchwala Family ADU

“Overall a superb construction company! I would give more stars if I could :-)” – Shaheen Kanchwala The Kanchwala Story Raymond and Shaheen are raising two…

Longfellow Family ADU

The Longfellow Story David and Lisa Longfellow are San Jose homeowners living with their son and huskies, Zeus and Juno. The Longfellow family had been looking…

Green-Levine Family ADU

The Green-Levine Story Lisa and Martin are college professors with two grown children living in San Jose, California. Martin’s father is almost ninety and the family would…

Seal Family ADU

“Acton ADU’s team cares about getting the job done right, and they have the skills to handle large, complicated, and detail oriented challenges.” – Caitlin Seal…

Woo Family ADU

The Woo Story Dina Woo and her son split their time between their homes in San Francisco and Sunnyvale. A chiropractor and acupuncturist duo, the family…

Shernock Family ADU

“Choosing Acton ADU was the best decision we made to give our family more room and privacy.” -Joseph N. (Shernock) The Shernock Story The Shernock’s are…

Anant Family ADU

The Anant Story The Anant family in Los Altos California was in need of more space for their family, especially for their aging parents for extended…

Fergason Family ADU

The Fergason Story Originally looking to build an addition onto their primary residence, the Fergason family decided to opt for a solution that would greatly expand…

Lerner Family ADU

  The Lerner Story Raymond and Sharla are raising two children, eight and four, while juggling their careers and working hard to stay connected with their…
Your Bay Area friends & neighbors bring their ADU dreams to us. We turn these dreams into reality.


We hired Acton Construction to expand our 1905 house to include an extra bathroom and laundry area. Acton presented a complete and detailed proposal with options and budget, allowing for a flexible array of choices as work proceeded. The work was accomplished as proposed, on time and within budget, and included design, permits, and historical review. The addition is perfectly matched to the original architecture while complying with current building codes. Workmanship was excellent. Especially impressive was the daily log of work accomplished and plans for the next day, kept on the job site for our review.
Roger Dahlberg
After meeting with several builders and ADU providers, including some really pushy ones, I went back to Acton ADU because they seemed the most honest and straightforward in terms of costs and what to expect. I just needed a small, private space of my own and to be close to my mom in case she needs assistance in the future. Acton ADU was professional, realistic, responsive, and my project was completed beautifully.
Justin Bearding
From design to delivery, Acton embodies quality and trust. We wanted a contractor that could deliver our vision and we could entrust our home to while our young family was still living in it. They built an attached ADU and new living area (in the main house). Even when faced with the wettest winter in years (2016) they protected our home and delivered the project on schedule. Acton has offered continued help to address minor follow items and stood by their two-year industry leading warranty. We would hire Acton for future ADU projects.
Brent Pearse
From beginning to the end, Acton was on top of their game! All of their sub contractor’s were really good and detail oriented. The entire Acton Team did a phenomenal job even through the crazy rains we had this year. We would use Acton again if we build again in the future!
Clinton Hoffmann
Acton ADU built our beautiful garage/ADU – completed in March and rented in May. With Acton running the show, I didn't have to deal with any issues – they identified problems, took ownership as needed and fixed it. In picking Acton, I wanted a high quality ADU since I may decide to live in it sometime in the future. They took care of all the permits and inspections and made sure I was kept up to date at all times.
Alan Williams



Whether you have a clear vision or seek guidance in shaping your ADU project, we’re the Bay Area ADU builders dedicated to tailoring solutions that not only meet but exceed your expectations.

Connect with us today, and let’s embark on this exciting journey together to create the perfect ADU for your family.