Drywall contractor (C-9) in Ontario, CA
6 licenses · checked Oct 27, 2026
There are 6 Drywall contractor (C-9) licenses with an address of record in Ontario, CA, in the CSLB License Master data checked Oct 27, 2026. That is 1.2% of the 483 such licenses statewide; Ontario ranks #9 of 250 CA cities for this license type. They are spread across 2 ZIP codes; the most common are 91762 (3), 91761 (3). Most list San Bernardino County. By business type: Corporation 3, Sole Owner 2, Limited Liability 1. The median first-issue year is 2018; the oldest license dates from 2015. 2 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.
What a Drywall contractor (C-9) license covers
Drywall (C-9) covers installing gypsum wallboard and finishing joints and surfaces.
Note: Under California's minor-work exemption, jobs under $1,000 (labor and materials combined) that need no building permit generally don't require a CSLB license.
How to verify a license
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.
Drywall contractor (C-9) licenses in Ontario
Showing 6 of 6, A to Z. Listing order is alphabetical, not a recommendation.
- Alpha Drywall#1059437 · 91762
- Alvarado Drywall INC#1038530 · 91761
- Ceiling Master LLC#1065081 · 91761
- Custom Drywall Specialists INC#1009518 · 91762
- Luis Drywall#1027740 · 91762
- Premier Drywall#1066319 · 91761
Frequently asked questions
How many Drywall contractor (C-9) licenses are in Ontario?
6 active licenses in the CSLB License Master data checked Oct 27, 2026 (1.2% of CA).
What does a Drywall contractor (C-9) license cover?
Drywall (C-9) covers installing gypsum wallboard and finishing joints and surfaces.
How do I verify a Drywall contractor (C-9) license in Ontario?
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.
Does every job in this trade need a license?
Under California's minor-work exemption, jobs under $1,000 (labor and materials combined) that need no building permit generally don't require a CSLB license.
How many Ontario Drywall contractor (C-9) licenses expire soon?
2 of 6 have an expiration date in the next 12 months. A license that lapses must be renewed before the holder can work under it again.
Other license types in Ontario
General building contractor (45) · Electrical contractor (C-10) (31) · General engineering contractor (16) · Painting contractor (C-33) (13) · HVAC contractor (C-20) (13) · Plumbing contractor (C-36) (10) · Low-voltage contractor (C-7) (9) · Landscaping contractor (C-27) (7) · Tile contractor (C-54) (4) · Cabinet and finish carpentry contractor (C-6) (4) · Flooring contractor (C-15) (3) · Concrete contractor (C-8) (3)
All Drywall contractor (C-9) licenses in CA →
Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.