Castro Valley Contractor Verification - Page 5

434 contractors checked against 6 data sources (Page 5 of 9)

434

Total Contractors

421

Active Licenses

7

Federal Records

Castro Valley Contractors

Showing contractors 201-250 of 434

INTERIOR SYSTEMS DRYWALL

Clear

License #361934 · C-9

Active

IONIAN BUILDERS LLC

Clear

License #1050163 · B

Active

IONUT CONSTRUCTION

Clear

License #1026785 · B

Active

ISAAC RION CONSTRUCTION

Clear

License #1136338 · B

Active

ISSAAC ROOFING

Clear

License #1024042 · C39

Active

J & A CONSTRUCTION

Clear

License #974834 · B

Active

J A M CONSTRUCTION

Clear

License #1058356 · B

Active

J C CONSTRUCTION

Clear

License #994512 · B

Active

J C PROSPECTIVE CONSTRUCTION INC

Clear

License #1088383 · B

Active

J D Z CONCRETE INC

Clear

License #976647 · C-8

Active

J J MARBLE FABRICATION & INSTALLATION

Clear

License #893702 · C54

Active

J R S ELECTRIC

Clear

License #763900 · C10

Active

J V C CONSTRUCTION

Clear

License #604531 · B

Active

J&V PRO CONSTRUCTION AND REMODELING

Clear

License #1141138 · B

Active

JEFFERSON LANDSCAPE AND DESIGN

Clear

License #824650 · C27

Active

JENSEN JOHN

Clear

License #547028 · B

Active

JHR FRAMING

Clear

License #1111496 · B

Active

JING ZHANG

Clear

License #1145548 · B

Active

JK PAINTING

Clear

License #927668 · C33

Active

JK PAINTING CO

Clear

License #1104216 · C33

Active

JUST PLUMBING INC

Clear

License #909971 · C36

Active

K 2 BUILDING GROUP INC

Clear

License #922034 · B

Active

K M S CONSTRUCTION

Clear

License #988014 · B

Active

K M SQUARED

Clear

License #1102264 · B

Active

K&C ENVIRONMENTAL LANDSCAPE

Clear

License #1096672 · C27

Active

KAITZ CONSTRUCTION GENERAL CONTRACTOR

Clear

License #938624 · B

Active

KANE PACIFIC CONSTRUCTION INC

Clear

License #831617 · B

Active

KARAJEN CONSTRUCTION SERVICES

Clear

License #676791 · B

Active

KASSELL ELECTRICAL SERVICES LLC

Clear

License #1134991 · C10

Liab Ins Susp

KILLIAN CONSTRUCTION

Clear

License #738955 · B

Active

KNUPPE H JAMES

Clear

License #214462 · B

Active

KNUPPE M J DEVELOPMENT COMPANY

Clear

License #742847 · B

Active

KOZUKI LANDSCAPING

Clear

License #828978 · C27

Active

L & J DEMOLITION INC

Clear

License #1084597 · C21

Active

L E ELECTRIC INC

Clear

License #1063050 · C10

Active

L L CONSTRUCTION

Clear

License #1087278 · B

Active

LAHERRERE VINCENT

Clear

License #1088970 · B

Work Comp Susp

LAMBROS ELIAS PLUMBING

Clear

License #561709 · C36

Active

LAMPROPOULOS GEORGIOS

Clear

License #992652 · B

Active

LANGON BUILDING & DEVELOPING

Clear

License #765364 · B

Active

LANGON JOHN J JR

Clear

License #283657 · B

Active

LANGON JOSEPH

Clear

License #757428 · B

Active

LAYNE ELECTRICAL ENT

Clear

License #380217 · C10

Active

LEE JAE

Clear

License #1118208 · C10

Active

LERNER AARON GENERAL CONTRACTOR

Clear

License #927537 · B

Active

LEVI CONSTRUCTION CO

Clear

License #1125930 · B

Active

LICO'S CONTRACTING

Clear

License #1021433 · B

Active

LIGHT SAVER ELECTRIC

Clear

License #1111545 · C10

Active

LONG'S CONCRETE

Clear

License #495230 · C-8

Contr Bond Susp

LU'S CONSTRUCTION

Clear

License #871211 · B

Contr Bond Susp

How to Verify a Contractor in Castro Valley

Manual contractor vetting takes 45+ minutes per sub and still misses violations in databases you don't know exist. SiteVetter runs 6 data source checks in seconds: CSLB license status, SAM.gov federal debarment, DOL wage violations, OSHA safety citations, EPA environmental records, and building permits.

Contractors in Castro Valley serve local residential and commercial construction needs.

Of the 434 CSLB-registered contractors in Castro Valley, 97% hold active licenses and 7 have at least one record in federal databases. Under California's "Controlling Employer" doctrine, general contractors can be held liable for subcontractor safety violations—making verification a legal necessity, not optional due diligence.

5-Point Verification Checklist for Castro Valley 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.