Contact Fullerton ADU Builders

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(877) 801-4497
Our Office121 West Truslow Avenue Suite 570
Fullerton, CA 92832
Same-Day Service AvailableWe dispatch the nearest available technician. Emergency calls prioritized.
Free, No-Obligation EstimateWe assess the job and give you a written price before any work begins.
Licensed, Insured & GuaranteedEvery job is backed by our workmanship warranty. You're fully protected.

Contact Fullerton ADU Builders – Free ADU Estimate in Fullerton

Call (877) 801-4497 to schedule your free ADU estimate in Fullerton, and you’ll speak with a live coordinator who listens first and sells nothing. We’ll ask a few questions about your property, your goals, and your timeline, then get you on the schedule for an on-site assessment. No pressure, no obligation, and no charge for the visit or the written estimate that follows.

Call (877) 801-4497

What Happens When You Call

Step 1: You call and we answer. A live coordinator picks up during business hours and takes the time to understand what you’re planning. You won’t get a recorded menu or a hard sell, just a real conversation about your ADU project.

Step 2: We schedule your free on-site assessment. We’ll find a time that works for you, and a local team member will visit your Fullerton property to evaluate the site. They’ll look at access, setbacks, utilities, and the best placement for your ADU given your lot and the city’s requirements.

Step 3: You receive a written, line-item estimate. Within a few days of the assessment, we send a clear written quote that breaks down the work and the cost. You’ll see exactly what you’re paying for, and we’ll walk you through it so nothing is vague or buried.

Step 4: We build, and you stay informed. Once you approve the estimate, we pull permits, schedule the work, and keep you updated from foundation to finish. Your project manager is your point of contact the whole way through, and you’ll always know what’s happening next.

Why Fullerton Homeowners Call Us First

  • Local knowledge of Fullerton’s ADU rules. Fullerton has its own specific setbacks, height limits, and permit process for accessory dwelling units, and we’ve been building in this city since 2017. We know what the planning department asks for and how to keep your permit moving.
  • Required licensing and insurance on every job. Every pro working under our name is required to hold the license and insurance their state requires for the work they do. You get the protection of a credentialed team without having to chase down paperwork yourself.
  • Transparent pricing with no hidden fees. The written estimate you receive is the number we build to, unless you change the scope. We won’t surprise you with change orders or add-ons that were never discussed.
  • A workmanship warranty you can hold us to. We stand behind our craftsmanship on every ADU we complete. If something isn’t right after the job is done, you call the same number you called at the start and we make it right.

Our Service Area Around Fullerton

We build ADUs throughout Fullerton and the surrounding North Orange County cities, including Anaheim, Placentia, Brea, Buena Park, La Habra, Stanton, Yorba Linda, Garden Grove, Orange, and La Palma. Cypress is also within our regular coverage area. If you’re just outside these cities, call us anyway at (877) 801-4497 – we’ll tell you honestly whether we can take on your project.

Frequently Asked Questions – Booking & Estimates

Call or Request a Callback

Ready to find out what your Fullerton ADU will cost? Call (877) 801-4497 during our business hours – Monday through Friday 7:00 AM to 7:00 PM, and Sunday 7:00 AM to 7:00 PM. We’re closed Saturdays. If you reach us after hours, leave a message and we’ll call you back on our next business day. No pressure, just a straight answer about your project.

Written by the team at Fullerton ADU Builders, serving Fullerton since 2017.

Areas We Serve
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