JBC General Building Contractor
JBC General Building Contractor is a general contracting company based in Upland, serving homeowners across Los Angeles and Southern California. Owner Uriel Jesus Cornejo runs the company, which focuses on a defined range of home remodeling, exterior and efficiency work. Estimates set out what is included before work begins.
Business Highlights
- It lists CSLB license #1055826 for B — General Building.
- It says it is bonded and insured.
- It lists workers’ compensation insurance.
Service Area
Los Angeles, San Diego and the Bay Area.
Featured on ProsGrade. JBC General Building Contractor is one of 6 renovation contractors ProsGrade lists in Upland, California.
7 services listed, including Kitchen remodeling, Bathroom remodeling and Interior remodeling. Open 6 days a week. Rated 5.0 from 12 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How JBC General Building Contractor compares with the other 5 renovation contractors on ProsGrade in Upland, using public Google ratings and review counts.
- Ranks in the top half of the 6 Upland renovation contractors on ProsGrade by Google rating and review volume.
- Rated 5.0 on Google, at or above the 5.0 average of other Upland renovation contractors on ProsGrade.
- Has more Google reviews (12) than 3 of the 5 other Upland renovation contractors on ProsGrade.
- One of 3 Upland renovation contractors on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
7 services- Kitchen remodelingCabinet refacing or full replacement; counters and lighting.
- Bathroom remodelingTub-to-shower conversions, replacement pans and curbless entries.
- Interior remodelingHardwood, engineered, laminate and tile flooring; drywall, trim and paint.
- Window replacementRetrofit or full-frame; flashing, backer rod and sealant.
- Siding replacementExterior cladding, house wrap and flashing; trim and soffits.
- LandscapingPaths, patios, retaining walls and drainage planning.
- Energy efficiencyInsulation, air sealing and efficient windows and doors.
Reviews
What customers say
Customers praise the professional service and finished results. One kitchen customer chose cabinets with glass doors that open upward and found a model she wanted; another customer appreciated that JBC replaced flood-damaged drywall and carpet quickly without cutting corners.
Customer Reviews
Cassidy Drummond
Oswaldo Leongrimaldo
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Frequently Asked Questions
Does JBC handle permits for kitchen remodeling?
For work requiring a permit, such as moving plumbing or altering electrical, JBC identifies it before contract signing and handles the filing.
How does JBC handle hidden water damage during a bathroom remodel?
If hidden water damage is found, JBC stops to show the homeowner and prices the repair as a change order, explaining the reason.
How long does JBC’s window installation usually take?
Once the units arrive, most window installations take one to two days; ordering lead time is usually longer.
Does JBC offer landscaping as a standalone service?
No. JBC plans and builds landscaping as part of a project on the house.








