Contra Costa County contractors & building pros

Companies in Contra Costa

A–Z by name. Listed from California public records as of 2026-10-20.

• #1 QUALITY PAINTING INCRichmond · Painting Contractor (C-33)
• 1 DEMOLITIONEl Cerrito · Demolition Contractor (C-21) · Specialty Contractor
• 1 TOM PLUMBER CONCORDConcord · Plumbing Contractor (C-36)Plumbing · Drain Cleaning · Water Damage Restoration
• 1 UP CONSTRUCTION INCBrentwood · General Building Contractor (B)
• 1ST GEN HVAC LLCRichmond · HVAC Contractor (C-20)
• 1ST STREAMLINE CONSTRUCTION INCOakley · General Building Contractor (B)
• 2 R CONSTRUCTIONBay Point · General Building Contractor (B)
• 3 R CONSTRUCTION INCAntioch · General Building Contractor (B) · Landscaping Contractor (C-27)
• 3D TECHNICAL SERVICES INCClayton · General Building Contractor (B) · Electrical Contractor (C-10) · Specialty Contractor
• 3G BUILDERS AND RENOVATIONSan Pablo · General Building Contractor (B)

See all 7,269 companies A–Z →

Licensed contractors & trades