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At ADU.Works, We Put You First. Experience a Hassle-Free ADU Building Process With Us - Your Trusted Full-Service Builder.

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Discover the Perfect ADU for Your Property with the Maverick Series

The Ultimate Solution for Your Additional Dwelling Needs


What is an
Accessory Dwelling Unit?

Accessory dwelling units, or ADUs, are small, self-contained living spaces that are built on the same property as a single-family home. ADUs are also known as granny flats, in-law units, or secondary suites. They are becoming increasingly popular as a way to add affordable housing to neighborhoods and provide a source of income for homeowners.

Some ADUs are detached from the main living space, such as a separate guesthouse or carriage house. Others are attached ADU models, such as a basement apartment or a garage conversion. ADUs provide you with more space for your family, build the value of your primary house, and generate extra income through rentals.


Can I build an

ADU on my property?

We believe that this is the most common query we get, and we are aware of how crucial it is to you. Check out our feature for property evaluation. Enter your address, pick an ADU, then drag it to your backyard—that easy!

Affordable ADUs Built for You Across California

Solving the Housing Crisis,
One ADU at a Time

ADU.Works is committed to creating quality, affordable ADUs that exceed your expectations. Our simple ADU process and pre designed models make it easy for you to build the ADU of your dreams. We're on a mission to solve the housing crisis by providing affordable housing solutions for California residents.

Get Your ADU Hassle-Free with ADU.Works

We Make Building Your ADU Simple, Affordable, and Fast

  • end-to-end-service
    End-to-end Service
    We offer a one-stop-shop solution for your ADU project, handling everything from permits to utility tie-ins and construction. You can sit back and relax while we take care of the details.
  • faster-timeline
    Faster Timeline
    Thanks to our use of helical piles and SIPs, we can construct ADUs faster than traditional builds. That means less disruption to your daily life and a quicker path to enjoying your new living space.
  • simplified-process
    Simplified Process
    Save money and time on design and architectural fees by using our pre-engineered plan sets. You could save $10,000–$20,000 and still have a customized ADU that meets your needs.
  • lower-cost
    Lower Cost
    Our 392 square feet ADU starts at only $139,400. With ADU.Works, you can have a high-quality living space without breaking the bank.

Ready to learn more about how we build ADUs in your backyard?
Visit our "How It Works" page to see our process in action and get started on your project today!

If you're looking to work with ADU builders that will help build your ADU through innovative, sustainable, and cost-effective means, we're the best ADU builders for the job.

Get Inspired and Explore
Our Innovative Design and Construction Solutions Today!

ADU.Works makes it easy with our virtual showroom tours! From the comfort of your own home, you can explore our range of innovative design and construction solutions.

And if you want to see our ADUs up close and personal, visit our showroom in Hayward, California, where you can experience the quality and craftsmanship of our ADUs firsthand.

We're open Monday through Saturday from 10:00 am to 2:00 pm.

Schedule your visit today!

Why Build an ADU?

Increase the Property Value

Property owners can increase the value of their homes by building an ADU. Your new ADU will increase the value of your property. You can also rent it out for extra income.

Extend Your Living Space

Not enough space in your main house? If your primary residence is already maxed out, you can extend your living space and use your ADU as an extension home, guest house, or storage area.

Accommodate Aging Parents

Create a home for your elderly parents, children or other family members.

Join Us in Reducing Your Carbon Footprint and Creating a More Resilient Community

Building Sustainable ADUs for a Greener Future

At ADU.Works, we are committed to creating sustainable ADUs that benefit both our customers and the environment. Our efforts include:


Innovative building process to achieve zero waste

We manufacture our prefab panels in a contained environment off-site, minimizing the environtal impact of the onsite construction process.

Use of fire and seismic resistant materials to create resilient ADUs

We manufacture our prefab panels in a contained environment off-site, minimizing the environtal impact of the onsite construction process.

Installation of all-season solar panels and energy star rated appliances to maximize energy efficiency

Our ADU units come inclusive of energy-efficient appliances - all of which are Energy Star-rated.

Open space layout and windows to maximize natural light

We have strategically placed windows on every side of your ADU to maximize the use of natural light.

Compliance with Title 24 and CA green code for environmentally responsible building practices.

We made sure that all our ADU units are Title 24 Compliant - adhering to the energy guidelines of the State of California.

By choosing us for your ADU project, you can rest assured that your new living space will not only be beautiful and functional, but also designed with sustainability in mind.

sustainability impact

What our Clients say?


“The team at ADU Works has been incredibly responsible throughout the process. All questions that we had along the way were researched in detail and always responded to within 24 hours. It has been a real treat to be able to work with a team that does exactly what they say they are going to do.”

Damon & Cynthia Gage
San Mateo County Homeowners


San Francisco Business Times Leadership TrustHPP Preferred Partner

Places in California We Serve

  • San Francisco
  • San Jose
  • Oakland
  • Marin
  • East Bay
  • Hayward
  • Silicon Valley
  • And More
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ADU Builder on a Mission

We're a company committed to building ADUs that will help communities find better housing solutions. Our detached ADU designs have family members in mind and we follow strict project management protocols to ensure we provide no-compromise, on0budget ADU homes.

Frequently Asked Questions

What is an ADU and why should I consider building one?

An ADU, also known as an accessory dwelling unit, is an additional living space constructed on the same lot as the primary residence, typically a single-family property. Building an ADU has numerous benefits, such as generating rental income, creating a multi-generational living space, increasing property value, and helping to alleviate the housing crisis.

ADUs can take various forms, including attached or detached units, garage or basement conversions, and others. They are also known by other names such as carriage houses, in-law suites, or granny flats.

To obtain more information about ADUs, including their costs, advantages, and disadvantages, please refer to our blog post: A Complete Guide to ADUs: Definition, Costs, Pros, and Cons.

How long does it take to build an ADU with ADU.Works?

We pride ourselves on our efficient construction and building systems that enable us to complete the on-site build of your ADU in just 60 days. However, the permitting process can vary in timeline depending on the jurisdiction and their review and approval processes.

For example, some jurisdictions may have a backlog of permit applications due to high demand for ADUs or other construction projects, causing delays in the review and approval processes. 

Rest assured that we work closely with the local jurisdictions to ensure a smooth and timely permitting process. Our team will handle all the necessary paperwork and coordination to help move your project through the permitting process as efficiently as possible. 

Still got questions for us?

We're here to help you create your perfect ADU. Contact us today to get started!

Our friendly and knowledgeable team is always here to answer your questions and provide you with the guidance and support you need to make your ADU project a reality.

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Structurally Insulated Panels

Structurally Insulated Panels

SIPs are made up of insulating foam cores sandwiched tightly between two structural facings that are designed and precisely manufactured off-site. Once these are completed, it only takes 30-60 days of onsite work and one contractor to complete your ADU.

Helical Piles Foundation

Helical Piles Foundation

A helical pile is a steel shaft with helices that is screwed into the ground to help anchor the ADU to the soil. This process requires only small machinery and a team of 2-3 people to complete in about 3 days.

Pre-engineered Plan Sets

Pre-engineered Plan Sets

Pre-engineered plan sets are ready-to-build diagrams which allows for quick, reliable & simple construction process – streamlining the need for inventorying materials or planning.

Visit our


Open House Daily
10:00am - 2:00pm

The M392, our flagship ADU model, is on display in our showroom on a daily basis. Come see and feel the actual model, SIPs, Helical Piles, all-inclusive appliances, and much more.

Schedule an appointment and our knowledgeable ADU specialist will gladly assist you.