Jb Mechanical Inc. DBA Mas Service

Jb Mechanical Inc. DBA Mas Service is an Antioch, California HVAC company holding CSLB license #498289, verified against state records, licensed since 1986.

License verification

License-Verified

CLEARCSLB #498289(C20|C38)
Original license date
1986-09-15
Expires
2028-06-30
Insurance through
2027-03-03 (INSURANCE COMPANY OF THE WEST)
Last verified 2026-08-17 · Verify at the state registry
Verification history
1. 2026-08-17 · checked against the state file · status: CLEAR

Contact

Phone: (888) 314-0451
Address: 5083 LONE TREE WAY, Antioch, CA 94531

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