Independent site · Not affiliated with CSLB or any state agency
Contractor LookoutCalifornia

Contractor Lookout is an independent website, not affiliated with CSLB or the State of California. This record comes from CSLB's public data file dated November 1, 2026 and may be out of date. Not a consumer report under the FCRA.

M S T Construction: CSLB License #837086

Source: CSLB public data · Updated November 1, 2026 · Official CSLB record

Active, no issues in CSLB file

Verify live status on CSLB's Instant License Check before hiring.

Verify live on CSLB Report an error / remove my address

The license is active with no suspension on record, though classifications, bonds and secondary flags still deserve a look.

License details

License number
837086
Primary status
CLEAR · what this means
Business type
Corporation
Full business name
M S T Group INC DBA M S T Construction
Issued
April 27, 2004 (22 years)
Reissued
February 2, 2023
Expires
February 28, 2027
Inactivated
April 27, 2004
Reactivated
August 3, 2004
Classifications
B General Building Contractor
C-10 Electrical Contractor
Mailing address
Po Box 5106, Diamond Bar, CA, 91765
Phone
(909) 322 8890

Workers' compensation

Type
Exempt
Effective
January 24, 2025

Confirm coverage with CSLB's insurer search. How to check workers' comp.

Contractor's bond

Surety
Merchants Bonding Company (mutual)
Bond number
101741319
Amount
$25,000
Effective
January 13, 2026

Status history

No changes recorded since we began tracking this license on November 1, 2026. We compare every weekly CSLB file and log changes to status, bonds, workers' comp and classifications here.

Related

Data: CSLB Public Data Portal, file dated November 1, 2026. Status can change at any time. Verify on CSLB's Instant License Check. This site is not a consumer reporting agency under the FCRA; don't use it for employment, credit, insurance or housing decisions about an individual.