- Licensed, Insured & Bonded
- Cerritos, CA
- 1-Year Workmanship Warranty
ADU Constructionfor Los Angeles andOrange CountyHomeowners
NewGen ADU Builders designs and builds accessory dwelling units across Los Angeles and Orange County, from garage conversions to new detached ADUs. Every project is licensed, insured and bonded, and backed by a 1-year workmanship warranty. You get honest pricing, transparent timelines, and a team committed to you from the first conversation to the final walkthrough.
- 1-Year
- Workmanship Warranty
- 3–6 Mo
- Typical Build Timeline
- 30 Mi
- Service Radius from Cerritos
01 — About
ADU Builders Basedin Cerritos, ServingTwo Counties
NewGen ADU Builders is a family-owned ADU construction company based in Cerritos, California. We work with homeowners, investors, and multifamily property owners within roughly 30 miles of our home base, across Los Angeles and Orange County.
We do one thing: accessory dwelling units. That focus means we know the difference between a garage conversion that adds value and one that adds headaches. We price honestly, communicate transparently, and stand behind our work with a 1-year workmanship warranty.
Licensed Contractor
Fully Insured & Bonded
1-Year Workmanship Warranty
Family Owned & Operated
ADU Specialists
Serving Los Angeles & Orange County
02 — Services
What We Build
Every project we take on is an ADU, whether it starts as a garage, a storage room, or an empty corner of your lot.
- 01
Garage Conversion
Turn an underused garage into a fully finished living space with its own kitchen, bath, and entrance. Garage conversions are often the fastest and most cost-effective route to an ADU because the structure already exists. We handle the design, build, and finish work.
Learn More - 02
Storage Room Conversion
Storage rooms, workshops, and other enclosed spaces can become rentable or family-ready living units. We assess the existing structure, plan the layout, and convert it into a complete ADU that feels like it was always meant to be a home.
Learn More - 03
New Ground-Up ADU Construction
When no existing structure fits, we build from the ground up. New construction gives you full control of the footprint, layout, and finishes. It is the right path for homeowners and investors who want a purpose-built unit designed for tomorrow.
Learn More - 04
Detached ADU
A standalone unit in the backyard offers the most privacy for tenants, aging parents, or adult children. We design detached ADUs that fit the lot, respect the main home, and maximize usable square footage within the budget you set.
Learn More - 05
Attached ADU
An attached ADU shares a wall with your existing home, which can lower construction costs and keep the footprint compact. We plan the connection carefully so both spaces stay private, functional, and comfortable.
Learn More
03 — Why NewGen
Why NewGenADU Builders
Licensed, Insured & Bonded
We carry the licensing, insurance, and bonding that protect you and your property throughout the build. Documentation is available on request before any work begins.
1-Year Workmanship Warranty
Every ADU we build comes with a 1-year workmanship warranty. If something we built needs attention in that first year, we come back and make it right.
Honest, Transparent Pricing
Most of our projects fall between $150,000 and $200,000, and we tell you that up front. No vague quotes, no surprise change orders you did not see coming.
ADUs Are All We Do
We are not a general remodeler that also does ADUs. Garage conversions, storage conversions, attached and detached units are our entire business, so the details get the attention they deserve.
Family Owned, Committed to You
NewGen ADU Builders is a family-owned company based in Cerritos. When you call, you reach the people responsible for your project, not a call center.
04 — Process
How It Works
- 01
Short Intake Interview
Reach out by text, call, or the contact form. We ask a few quick questions about your property, your goals for the ADU, and your budget so we understand the project before we visit.
- 02
On-Site Visit
We schedule an appointment to walk your property with you. We look at the existing structure, the lot, access, and utilities, and talk through which type of ADU makes the most sense.
- 03
Design & Planning
We turn the site visit into a plan: layout, finishes, scope, and a written estimate. You review everything and approve before construction starts.
- 04
Build & Handoff
Construction typically runs 3 to 6 months. We keep you updated as the build progresses and finish with a final walkthrough, then back the work with a 1-year workmanship warranty.
05 — Get Started
Ready to Add an ADUto Your Property?
Reach out today and we will schedule a short intake call, then set up an on-site visit to walk the project with you and provide a clear estimate.
- Free estimates after an on-site visit
- Licensed, insured and bonded
- 1-year workmanship warranty
- Text us at (562) 308-6040, Monday to Friday, 8am to 6pm
06 — FAQ
Common Questions
How much does an ADU cost?
Most of our ADU projects fall between $150,000 and $200,000 depending on the type of unit, size, and finishes. Garage and storage room conversions usually land at the lower end because the structure already exists. Ground-up detached units sit at the higher end. We give you a written estimate after the on-site visit.
How long does it take to build an ADU?
Construction typically takes 3 to 6 months once the plan is approved. Conversions tend to move faster than new construction. We give you a realistic timeline before work starts and keep you updated as the build progresses.
Are you licensed and insured?
Yes. NewGen ADU Builders is a licensed contractor and is fully insured and bonded. We can provide documentation before any work begins.
What areas do you serve?
We are based in Cerritos and serve properties within about 30 miles across Los Angeles County and Orange County. If you are near the edge of that range, reach out and we will let you know if we can help.
What happens after I contact you?
We start with a short intake interview by text or phone to learn about your property and goals. Then we schedule an on-site visit, walk the project with you, and follow up with a written estimate.
Do you work with investors and multifamily property owners?
Yes. We build ADUs for homeowners, investors, and owners of multifamily properties. Whether the unit is for family, rental income, or added property value, the process is the same: honest pricing and transparent communication from start to finish.
07 — Service Area
Serving Cerritosand Surrounding Areas
NewGen ADU Builders is based in Cerritos and serves properties within roughly 30 miles across Los Angeles County and Orange County. If your city is not listed, reach out and we will confirm coverage.
Serving Cerritos, Los Angeles County, and Orange County. Get your free ADU estimate today.