ADU & Room Additions in Long Beach, CA
Real square footage — designed, permitted, and built by one team.
ADUs & Additions for Long Beach homeowners
Long Beach homeowners trust A1 Builders for ADU & room additions. Long Beach mixes historic charm with newer construction, so we tailor every project to the home — updating kitchens and baths and refreshing interiors while respecting original character. And we know the local permitting landscape well.
Long Beach's mix of larger Bixby Knolls lots and tighter Belmont Shore parcels means ADU feasibility varies block by block. We start every project with an honest look at your lot and existing structures before we ever draw plans, so you know what's realistic before you commit.
Whether you need space for a growing family, an aging parent, a home office, or rental income, adding square footage is one of the biggest-impact projects a homeowner can take on — and one of the most complex to get right. A1 Builders manages ADUs and room additions end to end: feasibility and design, structural engineering, the full permit set, and every trade from foundation to final finish. California's streamlined ADU rules have made adding a unit more accessible than ever, and we know how to navigate LA and Orange County's specific permitting process so your project moves without stalling in plan check.
We serve Belmont Shore, Bixby Knolls, Naples, California Heights, and the rest of Long Beach (Los Angeles County).
ADUs & Additions problems we solve in Long Beach
- Needing more living space without the cost and upheaval of moving
- Wanting rental income or multigenerational living space but unsure where to start
- An underused garage that could become real, permitted living space
- Juggling a separate architect, engineer, and contractor with no one owning the outcome
Our ADU & room additions process
- 1
Free Feasibility Consult
We assess your lot, existing structures, and local rules, and lay out what's realistically possible.
- 2
Design & Engineering
We develop plans and structural engineering sized to your goals, lot, and budget.
- 3
Permitting
We prepare and submit the full plan set and manage plan check with the city.
- 4
Foundation, Framing & Systems
Footings, framing, plumbing, electrical, and HVAC built to code and inspected at every stage.
- 5
Finish & Walkthrough
Interior and exterior finishes completed, final inspection passed, and the space handed over — backed by our workmanship warranty.
Recent ADUs & additions work
ADU & Room Additions in Long Beach — FAQs
Ready for ADU & room additions in Long Beach?
Book a free, no-pressure consultation. We'll talk through your goals and budget, then follow up with a clear, fixed-price proposal.