Welcome to Mario A Castillo
Montclair's trusted general contractor. Renovations, repairs, remodels, and build-outs for the Inland Empire.
Renovations & Remodeling
From kitchens and baths to whole-home remodels and light commercial, we deliver quality construction and clear communication.
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Licensed & Insured
Quality workmanship, honest pricing, and reliable service. Contact us for estimates and project planning.
Contact UsAbout Us
Your trusted general contractor in Montclair and the Inland Empire
Why Choose Mario A Castillo
We deliver quality construction and remodeling with clear communication, honest pricing, and attention to detail.
- Residential and light commercial renovations, repairs, and build-outs
- Licensed, insured, and experienced
- Serving Montclair, Ontario, and the Inland Empire
Customers Served and counting
Projects Completed this year
Inland Empire focus
Years Experience in general contracting
Our Services
General contracting for residential and light commercial in the Inland Empire
Need a General Contractor in Montclair or the Inland Empire?
Contact Mario A Castillo today. We provide estimates, clear timelines, and quality construction for residential and light commercial projects.
Contact UsWhat We Do
General contracting for homes and businesses in Montclair and the Inland Empire
Residential
Renovations, remodels, additions, and repairs for homeowners.
Light Commercial
Build-outs, tenant improvements, and commercial repairs.
Repairs & Maintenance
Repairs, handyman services, and ongoing maintenance.
Our Team
Meet the professionals behind Mario A Castillo
Project Lead
General Contracting
Residential
Renovations & Remodels
Commercial
Build-Outs & Improvements
Service & Support
Customer CareFrequently Asked Questions
Have questions about our general contracting services? Find answers below or contact us for more information.
1. What services do you offer?
We provide residential and light commercial renovations, remodels, repairs, build-outs, additions, and maintenance. We're licensed, insured, and serve Montclair, Ontario, and the Inland Empire.
2. Do you handle smaller repairs?
Yes. We take on repairs, handyman work, and maintenance in addition to larger renovation and remodel projects.
3. What areas do you serve?
We serve Montclair, Ontario, and the greater Inland Empire. Our office is at 9209 Ramona Ave, Montclair, CA 91763.
4. Are you licensed and insured?
Yes. Mario A Castillo is a licensed general contractor and fully insured. We follow local codes and prioritize quality and safety on every job.
5. How do I get an estimate?
Reach out via our contact form or email info@mario-a-castillo.com. We'll schedule a visit, discuss your project, and provide a clear estimate.