San Bernardino County companies starting with O

173 companies, from California license records. Check any of them on the state's license lookup before you hire.

O C ELECTRICPinon Hills · General Building Contractor (B) · Electrical Contractor (C-10)
O C ELECTRICHesperia · Electrical Contractor (C-10)
O M ELECTRIC CORPRancho Cucamonga · Electrical Contractor (C-10)
O R METAL FABJoshua Tree · Specialty Contractor
O S BUILDERS INCHighland · General Building Contractor (B)
O T L BUILDERS INCApple Valley · General Building Contractor (B)
O USCANGA CONSTRUCTIONChino · Earthwork & Paving Contractor (C-12)
O'BRIANT PLUMBINGRialto · Plumbing Contractor (C-36)
O'BRIEN CONCRETE LLCYucca Valley · Concrete Contractor (C-8)
O'BRIEN ELECTRICBarstow · Electrical Contractor (C-10)Electrical Panel Upgrades · Bathroom Exhaust Fans · Recessed Lighting
O'CONNELL J JCrestline · General Building Contractor (B) · Electrical Contractor (C-10)
O'CONNOR PLUMBING COMPANY INCOak Hills · Plumbing Contractor (C-36)
O'DELL DANNY FLOOR COVERINGOntario · Flooring Contractor (C-15)
O&A CUSTOM WINDOW FASHIONS INCOntario · Specialty Contractor
O&A REMODELING & RESTORATIONFontana · General Building Contractor (B)
O&J MASTER TOUCH PAINT SERVICEHesperia · Painting Contractor (C-33)
OAK HILL'S GARAGE DOOR SERVICEOak Hills · Specialty Contractor
OAK HILLS CONTRACTORS INCOak Hills · General Building Contractor (B)
OAK HILLS UNDERGROUND INCOak Hills · General Engineering Contractor (A) · Electrical Contractor (C-10)
OAKES LANDSCAPEHesperia · Landscaping Contractor (C-27)
OAKRIDGE CONSTRUCTION & ENERGYYucaipa · General Engineering Contractor (A) · General Building Contractor (B) · Insulation & Acoustical Contractor (C-2) · Low Voltage Systems Contractor (C-7) · Electrical Contractor (C-10) · HVAC Contractor (C-20) · Landscaping Contractor (C-27) · Plumbing Contractor (C-36) · Specialty ContractorQII Inspections · Duct Leakage Testing · Title 24 Energy Compliance Testing
OAKTREE DEVELOPMENT CORedlands · General Building Contractor (B)
OASIS CUSTOM POOLSPhelan · Swimming Pool Contractor (C-53)Rock Pools · Modern Pools · Hot Tubs and Spas
OASIS POOL PLUMBING INCFontana · Plumbing Contractor (C-36) · Swimming Pool Contractor (C-53)
OB'S CONSTRUCTIONAlta Loma · General Building Contractor (B)
OBE & SONS INCRunning Springs · HVAC Contractor (C-20)
OBIL ROOFING LLCSan Bernardino · Roofing Contractor (C-39)
OBRIEN BROTHERS INCSan Bernardino · General Engineering Contractor (A)
OC HOME SERVICES INCChino · General Building Contractor (B)
OC IMPROVEMENT INCSan Bernardino · General Building Contractor (B)
OC'S CAULKING & WATERPROOFING INCHesperia · Specialty Contractor
OCAMPO JUANBloomington · General Building Contractor (B)
OCAMPO MONDRAGON CONSTRUCTIONUpland · General Building Contractor (B)
OCELOT ROOFINGHesperia · General Building Contractor (B) · Landscaping Contractor (C-27) · Roofing Contractor (C-39)
OCHOA ALEXANDER ELECTRICYucaipa · Electrical Contractor (C-10)
OCHOA BROS PAINTING INCSan Bernardino · Painting Contractor (C-33)
OCHOA CONCRETE AND CONSTRUCTIONApple Valley · General Building Contractor (B) · Concrete Contractor (C-8)
OCHOA GENERAL CONSTRUCTIONRialto · General Building Contractor (B)
OCT CONSTRUCTIONFontana · General Building Contractor (B)
OD SERVICES LLCRialto · General Engineering Contractor (A)
ODDO BRAD CONSTRUCTIONAlta Loma · General Building Contractor (B)
OFFICE & ERGONOMIC SOLUTIONS INCRancho Cucamonga · Specialty ContractorFurniture Sourcing · Design & Space Planning · Installation, Relocation & Removal
OG PLASTERING INCOntario · Lathing & Plastering Contractor (C-35)
OG WROUGHT IRONHesperia · Specialty Contractor
OGG M A HEATING & AIR CONDITIONING INCMontclair · HVAC Contractor (C-20)
OGILVIE JAMES CONSTRUCTIONWrightwood · General Building Contractor (B)
OJM ENTERPRISES INCSan Bernardino · General Building Contractor (B)
OKEEFE CHRISRunning Springs · Painting Contractor (C-33)
OLD BLUE SCOUT MOBILE SERVICEAngelus Oaks · Plumbing Contractor (C-36)
OLD DEL RIO CORPORATIONHesperia · General Building Contractor (B) · Specialty Contractor
OLD SCHOOL MASONRY INCOntario · Concrete Contractor (C-8) · Masonry Contractor (C-29)
OLDFIELD LAUNDRY SYSTEMSFontana · Specialty Contractor
OLDHAM CONSTRUCTIONUpland · General Building Contractor (B)
OLI CONSTRUCTION SERVICES INCRancho Cucamonga · General Building Contractor (B)
OLIVA FRANKLIN T & COPhelan · General Building Contractor (B) · Electrical Contractor (C-10) · Plumbing Contractor (C-36) · Specialty Contractor
OLIVARES DRYWALL FINISHING INCHesperia · Drywall Contractor (C-9)
OLIVARES FLOORINGHesperia · Flooring Contractor (C-15)
OLIVAS FOUNDATION DRILLING INCChino Hills · Specialty ContractorShoring System Installation · Foundation Drilling · Caisson Installation
OLIVAS REUBENAdelanto · General Building Contractor (B)
OLIVAS SHEET METALPinon Hills · Sheet Metal Contractor (C-43)
OLIVE BRANCHUpland · General Engineering Contractor (A) · Specialty Contractor
OLIVET CONSTRUCTION INCFontana · General Building Contractor (B)
OLLIS DAVID LANDSCAPE DEVELOPMENT INCRedlands · Landscaping Contractor (C-27)Landscape Design and Installation · Garden Renovation · Outdoor Living Spaces
OLMEDO JUAN CONSTRUCTION INCFontana · General Building Contractor (B)
OLSON AIRApple Valley · HVAC Contractor (C-20)
OLTMAN T C CONSTRUCTIONYucaipa · General Building Contractor (B) · Specialty Contractor
OMARS PAINTINGTwin Peaks · Painting Contractor (C-33)
OMEGA CONSTRUCTION CORancho Cucamonga · General Building Contractor (B)
OMEGA DOORS CORPOntario · Specialty Contractor
OMEGA MILLWORK DOORSHesperia · Cabinet, Millwork & Finish Carpentry (C-6)
OMEGA RENOVATION LLCLoma Linda · General Building Contractor (B)
OMEGA TELE-COMRancho Cucamonga · Low Voltage Systems Contractor (C-7)
OMNI BUILDERS INCRedlands · General Building Contractor (B)
OMNI CONSTRUCTION SOLUTIONSRialto · General Building Contractor (B) · Plumbing Contractor (C-36)
OMNICRAFT CONSTRUCTION INCAngelus Oaks · General Building Contractor (B)
ON BOARD CONSTRUCTIONCrestline · General Building Contractor (B) · Tile Contractor (C-54)
ON GRADE V-DITCH EXCAVATING INCORPORATEDColton · Earthwork & Paving Contractor (C-12)
ON SIGHT WELDING INCSan Bernardino · Specialty Contractor
ON THE WAY HVAC & HOME SOLUTIONS LLCVictorville · Glazing Contractor (C-17) · HVAC Contractor (C-20)
ON TIME REMODELYucaipa · General Building Contractor (B)
ON TRAC GARAGE DOOR COMPANYSan Bernardino · Specialty ContractorGarage Door Repair · Garage Door Opener Repair · Garage Door Replacements
ONE CHOICE PAINTING INCColton · Painting Contractor (C-33)
ONE PRIORITY ROOFING INCOro Grande · General Building Contractor (B) · Roofing Contractor (C-39)
ONE SHOT PAINTINGRancho Cucamonga · Painting Contractor (C-33)
ONE SOURCE CONSTRUCTIONVictorville · General Building Contractor (B) · Flooring Contractor (C-15) · Tile Contractor (C-54)
ONE STOP CONSTRUCTION & REMODELINGSan Bernardino · General Building Contractor (B)
ONE STOP SOURCERancho Cucamonga · General Building Contractor (B) · Plumbing Contractor (C-36)
ONE WEST CONSTRUCTIONYucaipa · General Building Contractor (B)
ONEDEV.Chino Hills · General Engineering Contractor (A) · General Building Contractor (B)
ONESTOP ELECTRICUpland · Electrical Contractor (C-10)
ONESTOP ELECTRIC LLCUpland · Electrical Contractor (C-10)
ONLY ELECTRIC INCMentone · Electrical Contractor (C-10)
ONPOINT EXCAVATION LLCCrestline · Earthwork & Paving Contractor (C-12)
ONSCOPE SERVICES INCUpland · General Building Contractor (B) · Low Voltage Systems Contractor (C-7)
ONTARIO ELECTRIC INCOntario · Electrical Contractor (C-10)Installation · Diagnosis · Troubleshooting
ONTARIO REFRIGERATION COMMERCIAL AIR CONDITIONING HEATING & CONTROntario · HVAC Contractor (C-20)Service · Maintenance · Projects
ONTARIO WHOLESALE CARPETOntario · Flooring Contractor (C-15)
ONTARIOS LANDSCAPE INCOntario · Landscaping Contractor (C-27)
ONYX HEATING AND AIRVictorville · HVAC Contractor (C-20)Air Conditioning Services · Furnace Installation · Heating Installation
ONYX POOL SERVICESChino · Swimming Pool Contractor (C-53)
ONYXX STEEL CORPRancho Cucamonga · Steel Contractor (C-50, C-51)
OPAL FUELS STATION SERVICES LLCRancho Cucamonga · General Engineering Contractor (A)RNG fuel supply · Fueling infrastructure · On-site RNG solutions
OPITZ DANIEL PAINTING COMentone · Painting Contractor (C-33)
OPTI - COMM TECHNOLOGIESOntario · Low Voltage Systems Contractor (C-7) · Electrical Contractor (C-10)
OPTI-COMM TECHNOLOGIES INCOntario · Low Voltage Systems Contractor (C-7) · Electrical Contractor (C-10)
OPTIMUM INCBloomington · General Engineering Contractor (A) · Low Voltage Systems Contractor (C-7) · Specialty Contractor
OPTIMUM ROOFINGHesperia · Roofing Contractor (C-39) · Solar Contractor (C-46)Roof Inspection · Tile Roof Repair & Lift and Relay · Shingle Roof Repair & Replacement
OPTION ONE SOLARApple Valley · Electrical Contractor (C-10) · Solar Contractor (C-46)Home solar · Battery backup · Commercial solar
ORANGE COAST CONSTRUCTIONRedlands · General Building Contractor (B)
ORANGE COAST NETWORK SOLUTIONS CORPOntario · Low Voltage Systems Contractor (C-7)
ORANGE COUNTY AIR SERVICESRancho Cucamonga · HVAC Contractor (C-20)
ORANGE INDEPENDENT PLUMBING SERVICESOntario · Plumbing Contractor (C-36)
ORANGE WEST PLASTERINGOntario · Lathing & Plastering Contractor (C-35) · Specialty Contractor
ORDAZ PAINTING SOLUTIONS INCSan Bernardino · Painting Contractor (C-33)
ORELLANA'S GARAGE DOORS INCOntario · Specialty Contractor
ORENDAIN ART ELECTRICFontana · Electrical Contractor (C-10)
ORIENTAL GARAGE DOORChino · Specialty Contractor
ORIGIN VOLT ELECTRICSan Bernardino · Electrical Contractor (C-10)
ORIGINAL PLUMBING COMPANY INC THERancho Cucamonga · Electrical Contractor (C-10) · HVAC Contractor (C-20) · Plumbing Contractor (C-36)
ORION PLASTERING INCFontana · Lathing & Plastering Contractor (C-35) · Specialty Contractor
ORION TILE & STONERialto · Tile Contractor (C-54)Porcelain tile · Natural stone slabs · Countertop slabs
ORNNELL FIRE SPRINKLER INCGrand Terrace · Fire Protection Contractor (C-16) · Specialty Contractor
OROSCO DESIGNRedlands · Specialty Contractor
OROSCO'S MASONRYFontana · Masonry Contractor (C-29)
OROZCO ALEX CONSTRUCTIONSan Bernardino · General Building Contractor (B)
OROZCO DAVID NAHUMHesperia · Landscaping Contractor (C-27)
OROZCO VICTOR CONSTRUCTIONOntario · General Building Contractor (B)
ORP LANDSCAPING INCFontana · Landscaping Contractor (C-27)
ORPHEY DONALD RBig Bear Lake · General Building Contractor (B)
ORR TIM ENTERPRISESRancho Cucamonga · General Building Contractor (B) · Roofing Contractor (C-39)
ORSA CONSTRUCTION INCRancho Cucamonga · General Building Contractor (B)
ORTEGA BRIANChino · General Building Contractor (B)
ORTEGA CONSTRUCTIONBloomington · General Building Contractor (B) · Earthwork & Paving Contractor (C-12)Demolition and remodeling · Framing and structural beams · Windows and exterior doors
ORTEGA DRYWALL CONSTRUCTIONChino Hills · Drywall Contractor (C-9)
ORTEGA ELECTRICYucaipa · Electrical Contractor (C-10)
ORTEGA OSCAR PTwin Peaks · Landscaping Contractor (C-27)
ORTEGA'S GRADINGHesperia · Earthwork & Paving Contractor (C-12)
ORTEGA'S GRADING INCHesperia · Earthwork & Paving Contractor (C-12)
ORTEGA'S PLASTERINGFontana · Lathing & Plastering Contractor (C-35)
ORTIZ COMMUNICATIONSRialto · Low Voltage Systems Contractor (C-7)
ORTIZ DEMOLITION INCORPORATEDOntario · Earthwork & Paving Contractor (C-12) · Demolition Contractor (C-21)
ORTIZ GABRIELOntario · Earthwork & Paving Contractor (C-12) · Demolition Contractor (C-21)
ORTIZ HIPOLITO JAVIERRialto · General Building Contractor (B)
ORTIZ JUAN CONSTRUCTIONRancho Cucamonga · General Building Contractor (B)
ORTIZ ROOFING AND CONSTRUCTION COMPANYSan Bernardino · General Building Contractor (B) · Roofing Contractor (C-39)
ORTON PLUMBINGSan Bernardino · Plumbing Contractor (C-36)
OS GENERAL CONSTRUCTION INCRancho Cucamonga · General Building Contractor (B)
OSBURN PLUMBING INCSan Bernardino · Plumbing Contractor (C-36)Repairs · Repiping · Drain cleaning
OSED CUSTOM STAINLESS STEEL KITCHENRialto · Sheet Metal Contractor (C-43)
OSIS BUILDING SERVICESRancho Cucamonga · General Building Contractor (B)
OSORIO'S PAINTINGFontana · Painting Contractor (C-33)Interior painting · Exterior painting · Faux finishing
OSUNA ELECTRICVictorville · Electrical Contractor (C-10)
OTERO LANDSCAPE PLUSHesperia · Landscaping Contractor (C-27)
OTHER COMPANY THEHesperia · General Building Contractor (B) · Electrical Contractor (C-10) · Specialty Contractor
OTL DRYWALLRialto · Drywall Contractor (C-9)
OTT JEFF CONSTRUCTIONYucaipa · General Engineering Contractor (A)
OTTESON'S CARL CERTIFIED BACKFLOW TESTING & REPAIRYucca Valley · Plumbing Contractor (C-36)
OTTO GATESApple Valley · Specialty ContractorGate repair and automation · Garage doors · Security cameras
OTWELL WELDING AND FABRICATIONLucerne Valley · Specialty ContractorBumpers · Rock sliders · Roof racks
OUT ENGINEERING CONSTRUCTION SERVICES INCYucaipa · General Engineering Contractor (A)
OUT OF THE SUN ENTERPRISES INCYucaipa · Specialty Contractor
OUTDOOR ENTERPRIESESYucaipa · General Building Contractor (B)
OVER THE CLIFF LANDSCAPEYucaipa · Landscaping Contractor (C-27)
OVER THE MOON RENOVATION AND CONSTRUCTION LLCUpland · General Building Contractor (B)
OVERCURRENT ELECTRICAL GROUP LLCVictorville · Electrical Contractor (C-10)
OVERMIER ELECTRIC INCCrestline · Electrical Contractor (C-10)
OVERSTREET INCYucaipa · General Engineering Contractor (A)
OWEN ELECTRIC INCRancho Cucamonga · Electrical Contractor (C-10)Underground Electric Service · Outdoor Lighting Options · HomeGuard Surge Protection
OWENS & GREEN GENERAL CONTRACTORS INCRedlands · General Building Contractor (B)
OWENS CONSTRUCTIONBloomington · General Building Contractor (B)
OZ PACKAGING SERVICE AND SALES LLCSan Bernardino · Electrical Contractor (C-10)In-plant rebuilds · Machine servicing · Electrical work
OZCORP FLOORING SOLUTIONSSan Bernardino · Flooring Contractor (C-15)
OZZIES CUSTOM IRONHighland · Specialty Contractor

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