Waltco Development
ADU Contractors
Los angeles and Orange county, CA
kitchen bath remodel · adu · new construction · wood flooring — Lic #625535Verify on CSLB
Available
California Licensed Pros
Find CSLB-verified accessory dwelling unit builders — backyard cottages, garage conversions, and granny flats. No account required, no runaround.
License Verification You Can Trust
Every adu contractor holds an active B license, verifiable against live CSLB records.
ADU-Specific Results
Filtered to the B classification only — no unrelated trades.
Direct Contractor Contact
No booking relay, no platform fee — call the adu contractor yourself.
Cleaner Local Search
Structured, license-verified results by city and ZIP.
Finding the right adu contractor for your specific job shouldn't feel overwhelming. Submit a free referral request and we'll help match you with a qualified California adu contractor based on your project type and location.
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Building an ADU involves complex permitting, utility connections, and construction requirements that vary by city and county. A licensed Class B general building contractor has the scope to manage foundation, framing, and multi-trade coordination on a structural, ground-up or converted build — not just finish work.
From site assessment and design through foundation work and final inspections, an experienced ADU builder manages every stage of the project, including setback requirements, height restrictions, and parking regulations that can make or break an ADU plan.
Every listing is checked against active CSLB license status
Navigates local ADU permitting, zoning, and plan-check requirements
A well-built ADU is one of the highest-return projects on a residential lot
We cover the full spectrum of residential and commercial needs. Here is what our pros can do for you:
Custom floor plans sized to your lot, setback requirements, and intended use — maximizing space and natural light before a shovel goes in the ground.
Permit application prep and submission, plan checks, and city or county approvals — the paperwork that determines whether an ADU project actually moves forward.
Slab-on-grade, raised foundation, or garage-conversion structural work, framed and inspected to current California building code.
Electrical, plumbing, and HVAC connections coordinated with utility companies so the finished unit meets code for habitable space.
Standalone backyard cottages and guest houses built separately from the main home, from foundation to final walkthrough.
Converting an existing garage into a fully permitted, habitable living space — one of the fastest and most cost-effective ADU paths.
California requires contractors performing structural building work over $500 in labor and materials to hold an active license issued by the Contractors State License Board (CSLB). ADU construction — new foundations, framing, and multi-trade coordination on a residential lot — falls under the Class B "General Building Contractor" classification, which covers structures requiring at least two unrelated trades.
A Class B contractor can take on the full structural scope of an ADU project directly, or bring in specialty-licensed subcontractors (electrical, plumbing, mechanical) as needed. Every listing on this page links directly to that contractor’s official CSLB record, so you can confirm license status, classification, and any public complaint history yourself before hiring.
Verify any contractor's license directly at cslb.ca.gov ↗Not every licensed contractor has ADU experience. Before you commit, here’s what separates the right builder from the rest.
Active CSLB license
Verify their license number at cslb.ca.gov before signing anything.
ADU-specific experience
Ask for examples of completed ADU projects, ideally permitted in LA County or your specific city.
Permit knowledge
A qualified ADU contractor should be fluent in LA County’s ADU permit process and pre-application requirements. If they’re not, that’s a red flag.
Transparent pricing
ADU costs in Los Angeles vary widely depending on size, type, and site conditions. A trustworthy contractor provides itemized estimates, not ballpark figures.
Insurance and bonding
Confirm they carry general liability insurance and workers’ compensation before any work begins.
ADU construction is structural, multi-trade work, so it falls under the CSLB Class B "General Building Contractor" license — different from the B-2 remodeling classification, which only covers nonstructural work. A Class B contractor can manage foundation, framing, and full-project coordination directly.
Every contractor listed on True Local Pros has been verified against the CSLB’s active license database. You can also cross-check any license number directly on the CSLB website (cslb.ca.gov).
Yes. ADUs require building permits from your city or county, and most California jurisdictions now have streamlined ADU permitting processes. A licensed contractor can confirm exactly what your project needs and pull permits on your behalf.
No. There is no account required at any point. Search, view results, and reach out to a contractor directly — all without signing up for anything.
Yes, for homeowners. Searching the directory and contacting contractors is completely free. You pay the contractor directly for the work — True Local Pros charges no platform fees or commissions.
Detached backyard cottages, attached additions, garage conversions, and junior ADUs (500 sq ft or less carved from existing space) — all fall within a Class B general building contractor’s scope.
Permit delays are most often caused by incomplete applications, non-compliant plans, or a contractor unfamiliar with local requirements. Hiring an experienced, locally verified contractor significantly reduces this risk — see our LA County ADU permit guide for a full step-by-step breakdown.
Costs vary depending on the ADU type, size, and site conditions — garage conversions run cheapest, detached ground-up units run highest. See our ADU cost guide for a full breakdown by type so you can plan with confidence.
An accessory dwelling unit is one of the highest-value projects you can build on a residential lot — rental income, a place for family, or a guest house, all backed by real equity. True Local Pros makes it easy to find a verified, CSLB-licensed ADU contractor and get in touch directly. No account. No platform fees. No wasted clicks.
Find ADU Contractors Near MeActive CSLB licences. Verify any of them yourself. Direct contact.
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Statewide matches for this service. Add your city or ZIP above to see adu contractors near you.
ADU Contractors
Los angeles and Orange county, CA
kitchen bath remodel · adu · new construction · wood flooring — Lic #625535Verify on CSLB
ADU Contractors
Capistrano Beach, CA
B — Lic #966919Verify on CSLB