Home builder
New home construction and ADU building across the Inland Empire.
- New Home Construction
- ADU Construction
- Custom Home Building
- Residential Building
- Home Building Consultation
Expert Home builder Serving the Inland Empire
Custom home building, ADU construction, and renovations serving Fontana, Riverside, and surrounding areas.
What We Do
Home builder Services in Fontana, CA
From quick repairs to full projects, we help you choose the right home builder services without pressure or guesswork.
General contractor
Additions, renovations, and remodeling work for residential properties.
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Construction company
Site preparation, framing, and structural work for residential projects.
Explore Construction company
Not sure what you need? We will assess your project at no cost.
Since 2019
Serving locally
San Bernardino County
Our Story Built from the ground up,
Our Full Story
Built from the ground up,
room by room
Before Castillos Construction Services opened its doors, our founder spent more than 30 years running a garage door business across the Inland Empire and surrounding communities. That work kept him on job sites day after day, and construction was always part of the picture. He handled additions, renovations, and structural work on the side throughout those decades, building a hands-on skill set that no classroom can replicate.
In 2019, he made it official. Castillos Construction Services, Inc. was founded to bring that same ground-level experience to homeowners and property owners who need new construction done right. The business is built on real trade knowledge, not a learning curve.
License #Ca. 1069732
How We Work
How We Work
From your first call to move-in day, we handle every step of your home or ADU build. Our process is straightforward and keeps you in the loop.
Initial Consultation
Call us to discuss your home building or ADU project. We listen to your vision and answer any questions about our process.
Project Assessment
We review your property, understand your goals, and outline the scope of work. This helps us provide an accurate estimate and timeline.
Construction & Updates
Our team builds your home or ADU with attention to detail. We keep you informed throughout the project and address any concerns promptly.
Final Walkthrough
We complete all work and conduct a thorough walkthrough with you. Once you approve, your new space is ready to enjoy.
We manage permits, inspections, and cleanup so you can focus on your new home. Your approval guides every phase of construction.
Where We Work Home builder Services Across
Home builder Services Across
the Inland Empire
Based in Fontana, CA — serving every corner of the Inland Empire.
Primary Service Area
Fontana, CA
Fontana's mix of older south-side tracts and newer North Fontana subdivisions creates strong demand for both ground-up home builds and detached ADUs on lots with real room to build.
Cities & Communities We Serve:
- Fontana
- , North Fontana
- , South Fontana
- , Rialto
- , Bloomington
- , Colton
Client Reviews
What San Bernardino County customers say.
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FAQ
Common Questions About Home Builder in Fontana, CA
Answers to the questions customers ask most before hiring a contractor. Not seeing yours? Call us. We are straightforward about our process, pricing, and expectations.
We primarily serve Fontana, CA, Jurupa Valley, CA, Rancho Cucamonga, CA, Riverside, CA, Upland, CA, Highland, CA. If you are outside these areas, call us. We take select projects beyond our standard service radius for the right scope.
Yes, we specialize in ADU construction throughout the area, including Fontana, Riverside, and surrounding communities.
We build new homes in Fontana, Riverside, Monrovia, Upland, Jurupa, Rancho Cucamonga, and Highland.
We manage the complete construction process from site preparation through final inspection and occupancy.
Still have questions?
Call us directly. Real answers, no scripts.
Find Us
Proudly Based in Fontana, CA
Stop by, call, or book online — we're always nearby when you need us.
Phone
(909) 430-8752Hours
- Monday 8:00 AM - 5:00 PM
- Tuesday 8:00 AM - 5:00 PM
- Wednesday 8:00 AM - 5:00 PM
- Thursday 8:00 AM - 5:00 PM
- Friday 8:00 AM - 5:00 PM
- Saturday Closed
- Sunday Closed
Get Started Today
Get Your Free Construction Estimate
Castillos Construction Services serves Fontana, CA and the surrounding area with professional home builder services. Free estimates, clear options, no pressure.
Licensed General Contractor
New Home Construction
ADU Specialist
Renovation & Addition Expert
Mon–Fri 8:00 AM - 5:00 PM · Sat Closed · Fast response on every request