Licensed Contractors in Ontario, CA - Page 6

952 CSLB contractor license records for Ontario (Page 6 of 20)

952

Total Contractors

902

Active Licenses

44

Federal Records

Ontario Contractor License Records

Showing contractors 251-300 of 952

DANCO TILE WORKS

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License #1080107 · C54

Active

DARRACQ R A CONCRETE

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License #351727 · C-8

Active

DAS COMMERICAL OPENINGS INC

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License #975798 · D28

Active

DAVID LEUNG

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License #731215 · B

Active

DAVIS MOBILE HOME SERVICES

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License #1047748 · C47

Active

DB CONSTRUCTION INC

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License #1039670 · B

Active

DC2 CONSTRUCTION

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License #763460 · B

Active

DCHRISTJAN FINE CABINETRY

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License #776103 · B

Active

DDL CONSTRUCTION INC

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License #1142403 · B

Active

DDPT INC

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License #1142270 · B

Active

DE LUNA FRAMING

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License #1071148 · C-5

Contr Bond Susp

DECAA LANDSCAPING

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License #1098408 · C27

Contr Bond Susp

DEEPOOLS SERVICE & REPAIRS

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License #1118938 · D35

Active

DEER CANYON ELECTRIC INC

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License #1041297 · C10

Active

DEKOKER JAMES ELECTRICAL CONTRACTOR

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License #300802 · C10

Active

DEL MAR FLOOR COVERING INC

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License #873992 · C15

Active

DELTA ENERGY ELECTRICAL SOLUTION

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License #1154808 · C10

Active

DELTA GROUP INC

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License #1107352 · A

Active

DESIGN WINDOWS & DOORS INC

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License #912367 · B

Active

DESIGNER WORKS

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License #986451 · B

Active

DESSA ELECTRIC COMPANY

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License #1093380 · C10

Active

DEVINE JOHN FITZGERALD

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License #934292 · B

Active

DEVINE LOOKS HOME DESIGN & CONSTRUCTION

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License #1074899 · B

Active

DH REMODEL & CONSTRUCTION INC

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License #808571 · B

Active

DI SHAO CONSTRUCTION

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License #1153127 · B

Active

DIAMOND AIR SERVICES INC

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License #1047483 · B

Active

DIAMOND WEST BUILDERS

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License #921003 · B

Active

DIRECT SOURCE COMMUNICATION INC

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License #955641 · C-7

Active

DIVERSIFAB INC

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License #740419 · D64

Active

DIVINE POOLS CO

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License #1124656 · C53

Active

DMG FIRE PROTECTION

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License #1062041 · C10

Active

DOJA INC

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License #597764 · A

Active

DOMINGUEZ JOD

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License #1084844 · B

Active

DOUMA CONCRETE

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License #879852 · C-8

Active

DOVE CONSTRUCTION

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License #890352 · B

Active

DRAPER PROPERTIES

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License #833028 · B

Active

DS HVAC INC

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License #1132699 · C20

Active

DUKE REALTY LIMITED PARTNERSHIP

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License #1019607 · B

QUAL Bond SUSP

DUNN TERRAL

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License #378323 · C-7

Active

DUO CAP CONSTRUCTION INC

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License #1131376 · A

Active

DVG COSTRUCTION

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License #1133506 · B

Active

DYLAN'S PLUMBING GROUP INC

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License #1136831 · C36

Active

E A PLUMBING INC

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License #603170 · C36

Active

E B A GLASSWORKS

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License #821501 · C17

Active

E SOLAR COMPANY

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License #1054112 · C10

Active

EAGLELIFT INC

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License #778157 · A

Active

EARTHSCAPES

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License #1027517 · A

Active

EAST LOS ANGELES COMMUNITY UNION THE

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License #622252 · B

Active

EASTVALE CONCRETE

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License #1080040 · C53

Active

EDGINTON GEORGE ALDRED

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License #784411 · B

Active

Nearby Contractor License Lookups

Ontario Contractor License Lookup

Use this page when you need a Ontario contractor license lookup, a list of licensed general contractors in Ontario, 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 Ontario. 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 952 CSLB-registered contractors in Ontario, 95% hold active licenses and 44 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 Ontario 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.