Licensed Contractors in Diamond Bar, CA - Page 3

310 CSLB contractor license records for Diamond Bar (Page 3 of 7)

310

Total Contractors

295

Active Licenses

4

Federal Records

Diamond Bar Contractor License Records

Showing contractors 101-150 of 310

G L CONSTRUCTION GROUP INC

Clear

License #994049 · B

Active

G N Y INC

Clear

License #1033410 · C-7

Work Comp Susp

GALVAN PLUMBING

Clear

License #1065435 · C36

Active

GARY & SON CONSTRUCTION

Clear

License #1138649 · B

Active

GARY'S AC SERVICES

Clear

License #921063 · C20

Contr Bond Susp

GIANT PALMS CONSTRUCTION INC

Clear

License #1072035 · B

Work Comp Susp

GONZALEZ ELECTRIC

Clear

License #962683 · C10

Active

GOOD TIDINGS CONSTRUCTION INC

Clear

License #577154 · B

Active

GRAND SPACE

Clear

License #1075915 · A

Active

GREEN AIR & REFRIGERATION

Clear

License #839148 · C20

Active

GREEN POINT

Clear

License #907419 · C27

Active

H J R CONTRACTING INC

Clear

License #1041548 · B

Active

H4 INVESTMENT INC

Clear

License #950924 · B

Active

HALSTEAD TODD MICHAEL

Clear

License #685211 · B

Active

HAMMOND DRYWALL CONSTRUCTION

Clear

License #956694 · C-2

Active

HARDY LANDSCAPE

Clear

License #734646 · C27

Active

HARDY LANDSCAPE CONSTRUCTION INC

Clear

License #905954 · C27

Active

HENRY ROGER

Clear

License #980170 · B

Active

HIGH NOON AIR

Clear

License #1085441 · C20

Active

HOFFICE BEAUTIFUL INC

Clear

License #965248 · B

Active

HOME BUILDERS INCORPORATED

Clear

License #1047096 · B

Active

HONEST PRO AIR CONDITIONING AND HEATING

Clear

License #1106190 · C20

Active

HONG CONSTRUCTION

Clear

License #1142230 · B

Active

HONG DING CONSTRUCTION INC

Clear

License #1038313 · B

Active

HU PETER YIPING

Clear

License #1053475 · B

Active

HUAMEI CONSTRUCTION INC

Clear

License #1051093 · B

Active

HUANG JAMIE JINZUO

Clear

License #1055726 · B

Active

HUB MILLWORK INC

Clear

License #1132628 · B

Contr Bond Susp

I S FIREPRO

Clear

License #740006 · C16

Active

IMPERIUM ROOFING INC

Clear

License #1141782 · C39

Active

INTEGRATED WIRING CONCEPTS INC

Clear

License #1076152 · C10

Active

ION SECURITY SYSTEMS

Clear

License #1015479 · C-7

Active

ISANVO CONSTRUCTION INC

Clear

License #1146026 · B

Active

ISRE INTERACT SOLUTIONS REAL ESTATE

Clear

License #1066181 · A

Active

J H PLUMBING

Clear

License #876263 · C36

Active

J K Z GROUP INC

Clear

License #1080141 · B

Active

J L J CONSTRUCTION

Clear

License #817273 · B

Active

J R Q FINISH CARPENTRY

Clear

License #972407 · C-6

Active

JAE DO LEE

Clear

License #1140383 · B

Active

JAY'S PLUMBING

Clear

License #622850 · C36

Active

JH BUILDER AND REMODELING INC

Clear

License #751479 · B

Active

JIANCAI CONSTRUCTION

Clear

License #1097425 · B

Contr Bond Susp

JIANCAI CONSTRUCTION INC

Clear

License #1141118 · B

Active

JINHENG CONSTRUCTION ENGINEERING US A COMPANY

Clear

License #1134197 · B

Work Comp Susp

JOE CONSTRUCTION GROUP

Clear

License #1140095 · B

Active

JONES PLUMBING

Clear

License #917266 · C36

Active

JT PROJECT MANAGEMENT INC

Clear

License #1116801 · B

Active

JUNG YOUNG CHAI

Clear

License #1051661 · B

Active

JUSTPRIME CONSTRUCTION INC

Clear

License #1153105 · B

Active

K 3 G S LLC

Clear

License #1064281 · C-7

Active

Diamond Bar Contractor License Lookup

Use this page when you need a Diamond Bar contractor license lookup, a list of licensed general contractors in Diamond Bar, or a fast way to screen specialty subs before bid award. Each profile starts from CSLB license data and adds federal safety, wage, debarment, environmental, and permit records.

These records cover contractors based in Diamond Bar. The list includes general building contractors and specialty trades, with license number, status, primary classification, and federal record count shown before you open a full profile.

Of the 310 CSLB-registered contractors in Diamond Bar, 95% hold active licenses and 4 have at least one record in federal databases. For GCs verifying subs, that means a standard CSLB status check is only the first pass; the risk review also needs workers' comp, bond, SAM.gov, OSHA, DOL, EPA, and permit checks.

What to Check for Diamond Bar Contractors

  • CSLB License: Confirm Active status (not Suspended, Revoked, or Expired)
  • Workers' Comp: Verify current coverage; exempt status means no employees
  • Contractor Bond: California requires $25,000 minimum (SB 607, Jan 2023)
  • Federal Debarment: Search SAM.gov for exclusion records
  • Safety & Wage History: Check OSHA citations and DOL wage violations

Data sourced from California Contractors State License Board and federal databases. Updated weekly. For official verification, check directly with CSLB.