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Licensed Glazing Contractors in Concord, California

Updated November 1, 2026 from CSLB's public license file · C-17 Glazing Contractor

  • 24licensed glazing contractors
  • 24active (Clear)
  • 0%with a suspension
  • 41.7%workers' comp exempt
  • 14 yrsmedian time licensed
  • 66.7%corp / LLC / partnership (33.3% sole owner)
  • 2new in the last 12 months
  • —change tracking began November 1, 2026

Concord is home to 24 glazing contractors in CSLB's license file, the most in Contra Costa County. 100% are Clear.

The share with a suspension, 0%, is 6.7 points lower than the Contra Costa County rate for the same license (6.7%). 41.7% report a workers' comp exemption, 6 points higher than the statewide figure for glazing contractors (35.7%), so many of these businesses say they have no employees.

2 of these licenses are less than a year old, while 70.8% have been held for 10 years or more. The median is 14 years.

In California this work generally calls for the C-17 Glazing Contractor license (or a B license when it is part of a larger multi-trade job). See the C-17 Glazing Contractor guide for what the license covers.

How to check a glazing contractor's license in Concord

  1. Look the company up by name or license number (search Concord). On the profile, confirm three things: Clear status, the C-17 license for this kind of work, and a contractor's bond on file.
  2. Before any money changes hands, verify the license on CSLB's own lookup. Our data comes from CSLB's weekly file, so a very recent change may not show here yet.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

All 24 glazing contractors in Concord

Concord glazing contractors sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed glazing contractors in Concord
Business nameLicense #StatusYearsWorkers' compBond
Schicker Luxury Shower Doors INC 527157 Clear 38 Insured On file
Diablo Glass INC 611669 Clear 35 Insured On file
Engineered Construction Services Corp 715004 Clear 31 Insured On file
Diablo Custom Screen 739884 Clear 29 Insured On file
Bestoff Windows and Construction 769183 Clear 27 Exempt On file
Superior Window Works 855238 Clear 21 Insured On file
Aames Home Improvement 877357 Clear 20 Exempt On file
Cadco Door & Window 890397 Clear 19 Insured On file
West Coast Windows & Doors INC 890083 Clear 19 Insured On file
East Bay Door and Window INC 898655 Clear 19 Exempt On file
Concord Glass INC 931921 Clear 17 Insured On file
Window Station INC 976606 Clear 14 Insured On file
Lema Construction INC 980737 Clear 13 Insured On file
Bestoff Windows INC 992647 Clear 12 Insured On file
Glass Max 1000322 Clear 11 Exempt On file
Novus Glass 1002738 Clear 11 Insured On file
All Glass Residential & Commercial INC 1004555 Clear 11 Insured On file
Whiting Glass INC 1025617 Clear 9 Insured On file
Iron Horse Windows and Glass Showers 1029577 Clear 9 Exempt On file
Window and Glass Pros 1059153 Clear 7 Exempt On file
Sagadyn R Construction 1115042 Clear 2 Exempt On file
Rios Glass 1120797 Clear 2 Exempt On file
Tws Fine Wood Windows INC 1146502 Clear 1 Exempt On file
Ms Glazing 1151773 Clear <1 Exempt On file

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed glazing contractors are in Concord?

CSLB's current public file lists 24 glazing contractors with a Concord mailing address. 24 have a Clear status, and 100% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a glazing contractor need in California?

CSLB issues the C-17 Glazing Contractor classification for this work. In Contra Costa County, 100% of Concord's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

How do I check a glazing contractor's workers' comp?

Open the contractor's profile here to see the workers' comp type and insurer from CSLB's file. In Concord, 58.3% of glazing contractors list a policy, 41.7% claim an exemption and 0% show no current coverage. Confirm the policy with CSLB's workers' comp search before work starts. How to check workers' comp.

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