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Top-Rated ADU & Room Addition Contractors – Serving Greater Los Angeles
Licensed, Bonded & Insured
Permits to Turn-Key Build
20+ Years Experience
We build legal ADUs and room additions across Greater Los Angeles — from permits to turn-key completion.
Why build an ADU?
Unlock the Full Potential of Your Property. Accessory Dwelling Units (ADUs) are a smart way to:
Family
Create extra living space for family or guests
Wealth
Generate passive rental income
Law
Stay compliant with California ADU housing laws
Investment
Increase your property value
New California ADU rules make it easier to build legally - and some cities now offer pre-approved ADU plans that can speed up the permitting timeline.
There’s a new opportunity for
homeowners to expand, rent out, and profit – with fully permitted, legal ADUs built under professional supervision.
Whether you're converting a garage or adding a full detached unit, we’re here to handle the entire process – design, permits, and construction.
Custom accessory dwelling unit builders with deep knowledge of local zoning laws
WHY DB CONSTRUCTION?
Not Just Builders – Full-Service ADU Contractor
Start-to-finish service
We handle city permits, blueprints, utilities, and construction.
Los Angeles-based team
Local ADU contractors who know LA permitting and zoning.
5-star Rating
Accessory dwelling unit contractor with 5-star reviews and repeat clients.
Transparent pricing
Get a clear breakdown of your ADU construction cost – no surprises.
We are
Licensed, bonded, and insured.
Everything under one roof
Design, permits, utilities, and construction.
Get Your Free 3D Design & ADU Feasibility Consultation
Built with Skill, Shown with Pride
Brick by Brick: An Honest Look
Wondering How Much It’ll Cost? Let’s Tailor an Estimate for You
Types of ADUs we build
Detached ADUs
Attached Additions
Garage Conversions
Basement Unit
Custom Designs Tailored to Your Lot
Specialize in legalizing non-permitted ADUs
Specialize in hillside & rough terrain construction
Room Additions & Home Additions
Need more space without building a detached unit? We design and build room additions — bedrooms, offices, and living space expansions — with full permits and a clear timeline.
Bedroom & master suite additions
Home office / family room additions
Second-story or side additions (when allowed)
As custom ADU builders, we tailor every unit to your lot, budget, and long-term goals – whether it’s for family, guests, or rental income.
We’re not just ADU builders – we’re problem solvers. We’ll find the best use of your space to match your goals and budget.
Cost & Process
Wondering How Much It Will Cost?
Free
Free consultation and cost estimate
Step-by-step
Step-by-step breakdown of ADU construction cost
Fast
Fast timelines, with permits handled in-house
Let’s help you build smart and stay within budget.
Ready to Plan? Get a Free Site Assessment & Cost Breakdown
Service Areas
We proudly serve:
Looking for ADU contractor near me? You just found them.
We’re proud to be the go-to ADU contractor near me for homeowners across Los Angeles – with fast timelines, expert guidance, and full transparency.
Testimonials
Let’s Plan Your ADU – Together
Ready to get started?
Free ADU consultation
Site assessment + cost breakdown
Talk to real local experts
Call now or fill out the form to get started
From Permits to Turn-Key: Request Your Free ADU Planning Session
Frequently Asked Questions About ADU Construction
What exactly is an ADU?
An ADU (Accessory Dwelling Unit) is a self-contained living unit located on the same lot as a primary residence. It can be attached, detached, or a converted space like a garage or basement.
How much does it cost to build an ADU in Los Angeles?
Costs vary depending on the type of ADU, size, location, and permits. We provide a free consultation and a detailed ADU construction cost breakdown so you know exactly what to expect.
Do I need permits for my ADU project?
Yes – but we handle the entire permitting process for you. As experienced ADU builders in Los Angeles, we know how to navigate local laws and zoning requirements quickly.
How long does it take to build an ADU?
Timelines vary based on the scope, but most ADUs take 3–6 months from planning to completion. Our in-house team helps speed up the process by handling everything under one roof.
Can I build an ADU on my property?
In many cases, yes – especially with recent California laws like AB 1332. We'll assess your lot and tell you what’s possible with no obligation.
Will an ADU increase my property value?
Absolutely. ADUs not only provide additional living space but can significantly boost your home’s market value – specially in high-demand areas like Los Angeles.
Can I rent out my ADU?
Yes. Renting out your ADU is a great way to generate passive income. We build rental-ready units that are fully code-compliant and legal to lease.
What types of ADUs do you build?
We build detached ADUs, attached additions, garage conversions, basement units, and fully customized designs – all tailored to your goals, space, and budget.
Why choose DB Construction for my ADU?
We’re not just ADU builders – we’re full-service contractors with 20+ years of experience, 5-star reviews, and a reputation for transparent pricing, fast execution, and full permit support.
What’s the first step to get started?
Just fill out one of the forms on this page or call us. We’ll schedule a free consultation, assess your space, and give you a clear plan – with zero pressure.
Still looking for ADU builders near you or comparing ADU contractor in Los Angeles?
Let us show you what a smooth and professional ADU project looks like.
Transparent pricing
Local, experienced pros
Seamless accessory dwelling unit construction from A to Z
Fill out the form above and let DB Construction turn your idea into a real ADU project — on time, on budget, and stress-free.
Schedule Your Free Consultation Today!
Tired of the outdated look? We can help! DB Construction is your one-stop shop for all your remodeling and construction needs.
Address
- 4555 Valley Blvd. Los Angeles, CA 90032 License #1019960
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