Best Licensed Door & Gate Contractors in Concord, CA
14 door and gate companies registered in Concord hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 63 active D-28 doors, gates and activating devices licenses in Contra Costa County; 14 registered in Concord
- 7 of Concord's 14 licenses (50.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Concord: 19 years
- Longest Concord licensure: since 1929
- 4 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1929
- Phone
- (925) 602-6400
- Verified
- August 17, 2026
- Licensed since
- 1959
- Phone
- (925) 671-7888
- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (925) 798-9673
- Verified
- August 17, 2026
- Licensed since
- 2005
- Phone
- (925) 787-3847
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (925) 383-9595
- Verified
- August 17, 2026
- Licensed since
- 2010
- Phone
- (877) 345-1276
- Verified
- August 17, 2026
- Licensed since
- 2021
- Phone
- (929) 330-6310
- Verified
- August 17, 2026
- Licensed since
- 1993
- Phone
- (925) 671-7606
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Swinerton Builders | #92 | On file | 1929 |
| Contra Costa Door Co | #186913 | On file | 1959 |
| Rex Lock & Safe Inc. | #691700 | On file | 1994 |
| Doors Done Right Construction | #858288 | On file | 2005 |
| Cadco Door & Window | #890397 | On file | 2007 |
| Sg Architectural Specialties | #952416 | On file | 2010 |
Contra Costa County door and gate licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 63 active D-28 doors, gates and activating devices licenses in Contra Costa County, 14 of them registered in Concord. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Concord license has been held 19 years, and the longest-standing one dates to 1929. 7 of Concord's 14 licenses (50.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 63 of the county's 63 licenses carry the same $25,000 bond California sets by statute. 4 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
Door & Gate Contractors in Concord: common questions
How many licensed door and gate contractors are there in Concord?
14 active D-28 doors, gates and activating devices licenses are registered in Concord, out of 63 across Contra Costa County. 14 Concord-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license door and gate contractors?
Yes. California licenses contractors by classification, and D-28 is the CSLB classification that authorises this work. 14 active D-28 doors, gates and activating devices licenses are registered in Concord and 63 across Contra Costa County, the longest-standing issued in 1929. Only CLEAR, unexpired licenses appear here.
How do I check a door and gate contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 7 of Concord's 14 currently carry. 4 Contra Costa County licenses expire within 90 days.
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