Acton ADU ADU projectLicense Verified

Acton ADU logoActon ADU

Serving Campbell, CA & the surrounding metro · Based in Campbell, CA

Pricing on request — unlock Acton ADU's ADU pricing for your project

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Acton ADU ADU project 4
Acton ADU ADU project 5

About Acton ADU

Acton ADU is the ADU-focused brand of Acton Construction Inc, a California-licensed general building contractor. Its CSLB license (#638333) has been current and active since February 21, 1992 — one of the longest license track records of any builder in this directory.

Acton ADU ADU pricing

Pricing varies by unit type, size, finishes, and site conditions. Unlock Acton ADU's project pricing for your lot — free, no obligation.

Unit typeTypical sizePricing
Studio / JADU≤ 500 sq ftPricing locked — unlock to view
1-bedroom detached ADU600–750 sq ftPricing locked — unlock to view
2-bedroom detached ADU750–1,000 sq ftPricing locked — unlock to view
Garage conversion400–600 sq ftPricing locked — unlock to view
Attached ADU400–800 sq ftPricing locked — unlock to view

Pricing is unlocked per project

Share a few details and we'll send Acton ADU's pricing for your build.

Services Acton ADU offers

  • Detached ADU
  • Attached ADU
  • Garage Conversion

What Acton ADU handles

Design & permitting

In-house design and full permit handling.

  • Architectural design & 3D renderings
  • Structural & Title 24 energy plans
  • City plan-check submittal & corrections

Construction

Turnkey ground-up and conversion builds.

  • Foundation & framing
  • Detached, attached & garage-conversion ADUs
  • Electrical, plumbing & HVAC

Financing

Guidance and lender introductions.

  • Renovation / construction-loan guidance
  • HELOC & cash-out refinance referrals
  • ADU-specific (after-build-value) lenders

Project types

ADU formats this builder takes on.

  • Detached ADU
  • Attached ADU
  • Garage / ADU conversion

Warranty & support

What's covered after move-in.

  • Workmanship warranty
  • Manufacturer materials warranties
  • Dedicated project manager

Reviews of Acton ADU

5.044 reviews
Verified

We had a great experience working with Acton ADU on our ADU project, and I want to give a special shoutout to Sandro. Sandro was fantastic from start to finish—always professional, easy to talk to, and super responsive whenever we had questions. Sandro kept everything on track, paid close attention to detail, and made the whole process feel smooth and stress-free. Our ADU turned out exactly how we hoped, and we really appreciate the effort Sandro and the Acton team put into it. Highly recommend working with them!

N K0 found this helpful
Verified

I had a great experience working with Acton ADU on our project in Downtown San Jose! From the beginning, the process was easy and straightforward. The whole team was professional and communicative, which made me feel confident throughout the design, permits, and build. One of the standout aspects of working with Acton ADU was their use of project management software that was easy to interface with and made communication seamless--we were able to track progress, see updates, and stay connected with the team at all times, etc.To top it off, the entire project was completed in just four months with minimal hiccups, which was a welcome surprise. Acton ADU exceeded my expectations with the quality too, but the care and professional nature of the whole team was definitely a stand out for me. I honestly couldn't be happier with the result. Highly recommend Acton!

Ingrid Quigley0 found this helpful
Verified

We recently had the pleasure of working with Acton Construction on a building project for an ADU in our backyard. It was a great experience, especially as a first-time homebuilder. Acton made it incredibly easy for us to get started with the project and guided us through the entire process. The design process was a breeze, thanks to Acton's pre-approved ADU plans in different sizes. This simplified the decision-making process and allowed us to choose a design that suited our needs. We opted for one of their pre-approved layouts. As part of the design process we selected from their list of finishes, hardware and appliances. Again, this helped us to minimize the number of decisions we had to make - which worked for us in our situation. They would however have also worked on more custom design if this had been important to us. During the build process we caught a few opportunities to add improvements that we had not thought about before, like adding lights into the closets and under the kitchen cabinets. These changes were easily accommodated and made possible because of frequent walkthroughs throughout the build phase. Ivan, the project lead, played a great part in ensuring the success of the project. His communication was excellent, and he kept us informed and involved throughout the entire process. Whenever we had questions or concerns, Ivan was readily available to address them, and his prompt follow-up on punch list items showed his dedication to delight us and make the project a true success. Ivan made sure the job site site was kept tidy and the construction activities were contained to the backyard, which was specially important since our lot is on the smaller side and I was working from home throughout the duration of the construction. In cases where material needed to be stored, Ivan proactively discussed the best solutions with us. The quality of the build exceeded our expectations, and we attribute this to the oversight provided by Ivan and the Acton team. Their attention to detail and commitment to delivering a high-standard project were evident in every aspect of the construction. We highly recommend Acton Construction if you are considering to add an ADU to your property and any other building project. They make the entire process easy and streamlined, with their pre-approved units and willingness to accommodate custom features. With Ivan's excellent communication, attention to detail, and oversight, we felt confident and supported throughout the project. The high quality standard of the construction further solidify Acton's reputation as a reliable and trustworthy partner for your building needs.

Alex Schoen0 found this helpful
Verified

Acton has just completed our dream kitchen remodel and we could not be happier. From our very first meetings with Acton (Stan and Jenn), we were impressed with their professionalism and approach to our project. They were excellent listeners and captured the full picture of what we were hoping to achieve. Our design team Lynne and Marianna helped guide us through all the decisions and options to fit our needs and keep us in line with our budget. Once the project began, Ivan, our project manager, was hands-on throughout the entire process. He’s an excellent communicator and a skilled craftsman. He managed the daily teams, coordinated inspections, and handled many things behind the scenes that I’m sure we didn’t even know about. We knew when to expect workers, they were punctual and courteous, and left the job site clean. This was important to us since we were living in the house during the remodel. Tim was the carpenter on our job and we cannot sing his praises enough. His meticulous attention to detail and craftsmanship were superlative. We also want to thank Vinnie, Connor, Zac, and Daniel for their work and dedication to our project. Our job was done in the expected time frame (we had one small delay, due to material - but well managed). We’ve completed many remodel projects and this was our very best experience by far. We had a high degree of trust and confidence with this team. They are honest, reliable, and talented. We could not ask for a better team to bring our vision to reality. We would highly recommend Acton for any project.

Dena Porter0 found this helpful
Verified

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 Pearse0 found this helpful

Frequently asked questions about Acton ADU

What does Acton ADU offer?

Acton ADU is a full-service ADU builder serving Campbell, CA, handling design, permitting, and turnkey construction for detached ADUs, attached ADUs, garage conversions, and junior ADUs (JADUs). Acton ADU holds a 5.0-star rating across 44 verified homeowner reviews.

Is Acton ADU licensed and insured?

Yes. Acton ADU is a CSLB license-verified contractor — bonded, insured, and vetted before listing in this directory.

How much does Acton ADU charge to build an ADU?

Acton ADU prices every ADU per project — your cost depends on size, finishes, and site conditions. Garage conversions are the most affordable path; detached units cost more. Pricing is unlocked per project: request a quote to get Acton ADU's exact, no-obligation estimate for your lot.

What areas does Acton ADU serve?

Acton ADU serves Campbell, CA and the surrounding metro. Confirm coverage for your exact address when you request a quote.

How long does Acton ADU take to build an ADU?

Most ADU projects run 6–12 months end to end — roughly 1–2 months for design and permitting (California caps plan check at 60 days for compliant units) and 4–8 months of construction. Acton ADU confirms a timeline for your specific project during the feasibility consultation.

How do I get a quote from Acton ADU?

Tap any "Get a Quote" button on this page to share a few details about your property and project. We'll confirm your service area, match you directly with Acton ADU, and set up your free feasibility consultation — no obligation.

Where Acton ADU works

Campbell, CAService-area map
Street View
  • City Building & Safety
  • Planning Department
  • Permit Center

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