Detached ADU
Detached ADU BuilderIn Cerritos, CA
NewGen ADU Builders is a detached ADU builder in Cerritos, creating standalone backyard homes across Los Angeles and Orange County, backed by a 1-year workmanship warranty.
01 — What's Included
What's Included in a Detached ADU
A detached ADU is a separate structure on your lot, fully independent from the main house. It is the most private option and the most flexible: a rental unit today, a home for family tomorrow. We size and place the unit to fit the lot, respect the main home, and make the most of the budget you set.
Lot evaluation and unit placement
Floor plan and exterior 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 Detached ADU Process Works
- 01
Consult
Text, call, or send the form for your free ADU property and investment analysis. We review where the unit can sit, its relationship to the main house, and utility runs, then talk through your goals, budget, and preliminary feasibility.
- 02
Design
We develop the concept — size, layout, and finish level — for your detached ADU and coordinate architectural and engineering work based on the final scope, then deliver a written estimate you approve before we move to permitting.
- 03
Permit
We submit for plan check and coordinate every permit requirement with the applicable jurisdiction so your project is fully approved before construction starts.
- 04
Build
From foundation and framing through MEP and finishes, we manage the defined scope, selections, and schedule, with inspections at every stage. Detached builds usually run toward the longer end of our 3 to 6 month range.
- 05
Turnover
Final inspection, punch-list completion, and a complete handoff of your finished detached ADU, backed by our 1-year workmanship warranty.
03 — Why Choose Us
Why Choose Us fora Detached ADU
Privacy by Design
A detached unit only works if both homes feel private. We plan the placement, entrance, and windows so the ADU and the main house each keep their own space.
Honest, Transparent Pricing
Detached ADUs typically fall in the upper half of our $120,000 to $340,000 range. We show you where your project lands before you commit, with no hidden add-ons.
Licensed, Insured & Bonded
Your property is protected throughout the build. Documentation is available on request.
1-Year Workmanship Warranty
If anything we built needs attention in the first year, we come back and fix it.
04 — Get Started
Ready to Add a Detached ADUto Your Backyard?
Reach out and we will schedule a short intake call, then visit your property to walk the yard 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 AboutDetached ADUs
How much does a detached ADU cost?
Our ADU projects run between $120,000 and $340,000, and detached units usually land in the upper half because they are built new from the foundation up. Size and finishes drive the final number. Your written estimate will show exactly where your project falls.
How long does a detached ADU take to build?
Builds run 3 to 6 months, and detached construction typically sits toward the longer end. We set a realistic timeline before work begins.
How much yard do I need for a detached ADU?
It depends on your lot, setbacks, and the size of unit you want. We evaluate the space at the on-site visit and tell you honestly what fits and what does not.
Can I rent out a detached ADU?
Many of our clients build detached ADUs specifically for rental income, and investors and multifamily owners are a core part of who we serve. We design the unit to work as an independent home so it functions well as a rental.
What areas do you serve?
We build within about 30 miles of Cerritos across Los Angeles County and Orange County.
What should I compare when I'm getting bids from other ADU builders?
Before you compare bids, compare scope. Ask every builder to spell out, in writing, who is responsible for design and engineering, utility and electrical-service work, and foundation and structural scope; what cabinet, counter, flooring, and tile allowances are included; who handles permit and inspection responsibilities and site concrete, drainage, and exterior work; what the change-order process and exclusions are; and what your completion, punch-list, and warranty responsibilities look like. We put all of it in writing before you sign.
06 — Service Area
Detached ADUs in Cerritosand Beyond
We build detached ADUs for homeowners and investors throughout Los Angeles County and Orange County, within roughly 30 miles of our Cerritos base. Not sure you are in range? Text us and we will confirm.
Cerritos, CA
Norwalk
Lakewood
Bellflower
Buena Park
Downey
Whittier
Fullerton
Long Beach
Garden Grove
Offering detached ADU construction in Cerritos, Los Angeles County, and Orange County. Get your free estimate today.