ADU Builders · California
ADU Builders in California — Licensed, Turnkey, All-Included
Epic Modulars is a licensed California ADU builder that handles everything — permits, design, factory build, and installation — for one all-in price starting at $79K.
What a Turnkey ADU Builder Actually Covers
Most ADU contractors handle construction only. Epic Modulars handles everything.
Licensed In-House Design
Choose from our curated library of HCD-pre-certified floor plans. Our team reviews your lot, checks setbacks and zoning, and recommends the right layout. No separate architect fee.
Full Permit Management
We submit to your city, respond to plan check comments, and coordinate with the building department from first submittal to final sign-off. You don't deal with the city — we do.
Factory Build + Delivery
Your ADU is built in a California HCD-certified factory while permits are in review. When permits are approved, we deliver and set the unit — no on-site construction delays waiting on subcontractors.
Foundation, Site Prep & Utilities
We handle grading, foundation pour, and all utility connections — water, sewer, and electric. No separate contractor needed for any phase of the project.
Every Epic Modulars ADU Includes
All-in pricing — no add-ons, no surprises.
ADU Builder California FAQs
How do I find a good ADU builder in California?
Look for four things: a valid California contractor license (searchable on the CSLB website), direct ADU experience (not a general remodeler who "also does ADUs"), in-house permit management, and transparent all-in pricing. Many homeowners get burned by builders who quote low, then add fees for permits, site prep, utility connections, and inspections. Ask for a line-item breakdown before signing anything. Epic Modulars lists everything in the contract — no additions at the end.
What's included when Epic Modulars builds my ADU?
Everything. Our all-in price covers permit management, in-house design selection, factory construction, delivery to your California property, foundation and site preparation, utility connections (water, sewer, electric), final city inspections, and a 1-year workmanship warranty. You won't get a surprise bill for "extras" at the end — what we quote is what you pay.
How do Epic Modulars' prices compare to local ADU contractors?
Local general contractors typically quote $180–$450 per square foot for site-built ADUs in California, putting a 400 sq ft ADU at $72,000–$180,000 for construction alone — before permits, design, or utility work. Our factory-built model cuts that cost significantly. Starting at $79,000 all-in for a complete permitted ADU, we're consistently 30–50% less than equivalent site-built quotes. The savings come from factory efficiency, not cutting corners on materials or finishes.
Is Epic Modulars licensed and insured in California?
Yes. Epic Modulars holds California Contractor License #587516, Manufactured Home Dealer License #DL1571946, and "Tiny Home/Park Model" Dealer License #97899. We carry general liability and workers' compensation insurance on all projects. Our factory-built units carry HCD (California Department of Housing and Community Development) certification, which is required for all factory-built structures in California.
What warranty do ADU builders in California typically offer?
Industry standard for site-built contractors is a 1-year "bumper-to-bumper" workmanship warranty, which is also what California law requires (Civil Code 896). Epic Modulars provides this 1-year workmanship warranty on all installations, plus manufacturer warranties on individual components (appliances, HVAC, windows, roofing) that typically run 5–10 years. Our factory-built units also carry the HCD inspection record, which documents that construction met state code at every stage.
Work With California's Turnkey ADU Builder
One call starts the process. We handle permits, build, and installation — you get a finished ADU for one all-in price.
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