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(877) 265-9846Loma Linda, CA 92307
Contact Colonial ADU Builders – Free ADU Estimate in Fontana
Ready to talk about adding an accessory dwelling unit to your Fontana property? Call us at (877) 265-9846 and you’ll reach a live coordinator who can answer your questions, walk through your property details, and schedule a free assessment with our local team. No high-pressure sales pitch, no obligation. Just straight answers about ADU feasibility, cost ranges, and timelines for your specific lot.
What Happens When You Call
Step 1: You call and we listen. When you dial (877) 265-9846, a coordinator answers and asks about your property: lot size, current structures, what you’re picturing for the unit. We take notes, ask a few questions, and get a clear sense of what’s possible before anyone ever sets foot on your land.
Step 2: We schedule a free on-site assessment. We’ll find a time that works for you and send someone familiar with Fontana’s zoning and setback rules to walk your property. They’ll check access, utility connections, grading, and where an ADU would actually fit. This visit costs you nothing.
Step 3: You receive a written estimate. Within a few days of the assessment, we send a detailed line-item estimate covering design, permitting, site work, construction, and finishes. You’ll see exactly where your money goes before you commit to anything. If you want to adjust scope, we’ll revise the numbers with you.
Step 4: We build, you watch it come together. Once you approve the estimate and sign the agreement, we pull permits, order materials, and get to work. Your coordinator stays your point of contact throughout the build. When we finish, we walk the unit with you and address anything that doesn’t meet your expectations.
Why Fontana Homeowners Call Us First
- Local familiarity with Fontana’s ADU process. We’ve been working in the Inland Empire since 2011, and we know what Fontana’s planning department asks for, what setbacks apply to R-1 lots, and how to keep permits moving. That local knowledge saves you weeks of back-and-forth.
- Licensing and insurance requirements are non-negotiable. Every pro working under our name is required to hold the license and insurance their state requires. We don’t cut corners on credentials because we’re not interested in putting your property or your project at risk.
- Transparent pricing with no hidden fees. The estimate you approve is the price you pay unless you change the scope. We spell out site work, utilities, finishes, and permitting costs in writing before construction begins. Surprises are for birthdays, not invoices.
- A workmanship guarantee we stand behind. We warranty our ADU construction work and we’ll put the terms in your contract. If something isn’t right after we finish, call us. We come back and make it right. That’s been our approach since day one.
Our Service Area Around Fontana
We build ADUs throughout the Inland Empire and High Desert. Our primary service area includes Fontana, Apple Valley, Spring Valley Lake, Victorville, Hesperia, Mountain View Acres, Oak Hills, Adelanto, Lake Arrowhead, Crestline, Silver Lakes, and Running Springs. Travel time varies depending on your location, but our team regularly works in every city listed here. If you’re nearby but don’t see your city, call us anyway. We’ll tell you honestly whether we can take on your project.
Frequently Asked Questions – Booking & Estimates
Yes. The on-site assessment and the written estimate cost you nothing. We do this because we want you to have real numbers before making any decision. Call (877) 265-9846 to schedule yours.
Our team works in Fontana regularly, so scheduling an assessment is usually a matter of finding a day that fits your schedule. When you call, we’ll offer you the soonest available time slots. No waiting weeks just to get someone to look at your property.
No. Our hours are Monday through Friday 7:00 AM to 7:00 PM, and Sunday 7:00 AM to 7:00 PM. We’re closed on Saturdays. There’s no premium tacked on for a Sunday assessment or a phone call later in the evening within those hours.
It helps if you know your lot’s approximate size, the year your home was built, and roughly where on the property you’re imagining the ADU. If you have a survey or plot plan, even better. But don’t worry if you don’t. We can work from county records and a site visit.
For estimates, there’s no payment at all. For construction, we accept standard forms of payment and we’ll outline the payment schedule in your contract before work begins. We’ll make sure you understand exactly when payments are due and what each payment covers. Call (877) 265-9846 if you want to talk through specifics.
Call or Request a Callback
The fastest way to get answers is to call (877) 265-9846. We’re open Monday through Friday 7:00 AM to 7:00 PM and Sunday 7:00 AM to 7:00 PM. If you reach us outside those hours, leave a message and we’ll call back on our next business day. No pressure, no obligation. Just a conversation about what’s possible on your Fontana property.
Written by the team at Colonial ADU Builders, serving Fontana and the Inland Empire since 2011.