New Ground-Up ADU Construction
New Ground-Up ADU Constructionin Cerritos and Beyond
NewGen ADU Builders designs and builds new accessory dwelling units from the ground up for homeowners, investors, and multifamily owners across Los Angeles and Orange County. New construction gives you full control of the footprint, layout, and finishes. Every build is licensed, insured and bonded, and backed by a 1-year workmanship warranty.
01 — What's Included
What's Included in a Ground-UpADU Build
Ground-up construction means we build a new, standalone or attached unit where nothing existed before. It is the right choice when there is no garage or storage structure to convert, when you want a specific layout, or when the goal is a purpose-built rental or family unit designed for the long term.
Site visit and lot evaluation
Floor plan and layout design
Foundation, framing, and roofing
Full kitchen and bathroom build-out
Plumbing, electrical, and HVAC coordination
Interior and exterior finishes
Final walkthrough and 1-year workmanship warranty
02 — Process
How Our Ground-Up ADU Process Works
- 01
Short Intake Interview
Text, call, or send the form. We ask about your lot, what you want the unit to do, and your budget so we can prepare before the site visit.
- 02
On-Site Visit
We walk the property with you, look at the lot, setbacks, access, and utility locations, and talk through whether a detached or attached unit fits best.
- 03
Design & Written Estimate
We develop the floor plan, elevations, and finish selections, then provide a written estimate that shows what is included. You approve before we break ground.
- 04
Construction
From foundation to finishes, we build the unit and keep you updated as it progresses. Ground-up builds typically run toward the longer end of our 3 to 6 month range.
- 05
Final Walkthrough & Warranty
We walk the completed ADU with you, resolve punch-list items, and hand over a home backed by our 1-year workmanship warranty.
03 — Why Choose Us
Why Choose Usfor New ADUConstruction
Designed for Tomorrow
A ground-up ADU is a long-term asset. We design layouts that work for family today and rental income later, so the unit keeps its value as your needs change.
Honest Budget Conversations
New construction is the largest ADU investment, usually at the upper end of our $150,000 to $200,000 range. We tell you that at the start and keep the estimate transparent throughout.
Licensed, Insured & Bonded
A full build from the ground up carries more risk than a conversion. Our licensing, insurance, and bonding protect your property through every phase.
1-Year Workmanship Warranty
If anything we built needs attention in the first year, we come back and make it right.
ADUs Are All We Do
We are not a general builder. Every project is an accessory dwelling unit, so the design and construction decisions specific to ADUs get our full attention.
04 — Get Started
Ready to Build a New ADU onYour Property?
Reach out and we will schedule a short intake call, then visit your lot to walk the project with you and provide a clear written estimate.
- Free estimates after an on-site visit
- Licensed, insured and bonded
- 1-year workmanship warranty
- Text us at (562) 308-6040
05 — FAQ
Common Questions About New ADUConstruction
How much does it cost to build a new ADU?
Ground-up construction typically sits at the higher end of our $150,000 to $200,000 range because everything from the foundation up is new. Size, layout, and finishes drive the final number. Your written estimate after the site visit will show exactly where your project lands.
How long does it take to build an ADU from scratch?
Our builds run 3 to 6 months, and new construction usually falls toward the longer end. We give you a realistic timeline before work starts and keep you updated throughout.
Should I build new or convert an existing structure?
If you have a garage or storage room in good condition, a conversion is often faster and less expensive. If you want a specific layout, more square footage, or there is no existing structure, ground-up construction is the better path. We help you decide at the site visit.
Can I build an ADU on a multifamily property?
We work with owners of multifamily properties as well as single-family homeowners and investors. Reach out with the property details and we will walk through the options at the site visit.
What areas do you serve?
We build within about 30 miles of Cerritos across Los Angeles County and Orange County.
06 — Service Area
New ADU Constructionin Cerritos and Beyond
We build new ADUs for homeowners and investors throughout Los Angeles County and Orange County, within roughly 30 miles of our Cerritos base. Near the edge of that range? Text us and we will confirm.
Offering new ADU construction in Cerritos, Los Angeles County, and Orange County. Get your free estimate today.