Los Angeles County companies A–Z

47,486 companies, from California license records. Check any of them on the state's license lookup before you hire.

ONESUN LLCStudio City · Solar Contractor (C-46)
ONEW HOME CONSTRUCTION INCPomona · General Building Contractor (B)
ONGOING ROOFING INCNewhall · Roofing Contractor (C-39)
ONIK ELECTRICAL SERVICES INCGlendale · Electrical Contractor (C-10)
ONLY ONE CONSTRUCTIONWest Hills · General Building Contractor (B)
ONLY THE BEST HEATING AND AIR CONDITIONINGArcadia · HVAC Contractor (C-20)
ONMARK BUILDERSValley Village · General Building Contractor (B)
ONNI CONTRACTING (CALIFORNIA) INCLos Angeles · General Building Contractor (B)
ONNURI BUILDERS INCRowland Heights · General Building Contractor (B) · Plumbing Contractor (C-36)
ONNURI PLUMBING CONSTRUCTIONRowland Heights · Plumbing Contractor (C-36)
ONP CONSTRUCTION INCSan Marino · General Building Contractor (B)
ONQ ENERGY SERVICESSanta Clarita · General Engineering Contractor (A) · General Building Contractor (B) · Electrical Contractor (C-10)Preventative Maintenance · Plant Support · Inverter and Tracker Troubleshooting / R
ONSIDE CONSTRUCTION INCRosemead · General Building Contractor (B) · Cabinet, Millwork & Finish Carpentry (C-6)
ONSITE CONSTRUCTION SERVICES INCSanta Clarita · General Building Contractor (B) · Electrical Contractor (C-10)
ONSITE OVERHEAD DOORSCommerce · Specialty Contractor
ONSITE RESTORATION LLCGranada Hills · Flooring Contractor (C-15)
ONSITEMIKE AND THE BUILDERS INCLong Beach · General Building Contractor (B)
ONSTAR BUILDERS INCValley Village · General Building Contractor (B)
ONSYNC SOLUTIONSMonrovia · General Building Contractor (B)
ONSYTE SERVICES INCNorwalk · General Building Contractor (B) · Painting Contractor (C-33)
ONTIME AIR SERVICE INCAlhambra · HVAC Contractor (C-20)
ONTIME DOCK SERVICELa Mirada · Specialty Contractor
ONTRAK CONSTRUCTIONWhittier · General Building Contractor (B)
ONTRAX CONSTRUCTION INCLancaster · General Engineering Contractor (A) · General Building Contractor (B) · Demolition Contractor (C-21) · Landscaping Contractor (C-27)
ONWARD CAPITAL LLCWest Hollywood · General Building Contractor (B)
ONYX BUILDERPasadena · General Building Contractor (B)
ONYX BUILDING COMPANYChatsworth · General Building Contractor (B)
ONYX BUILDING SOLUTIONS INCStudio City · General Building Contractor (B)
ONYX CONSTRUCTIONManhattan Beach · General Building Contractor (B)
ONYX CUSTOM LANDSCAPEVan Nuys · Landscaping Contractor (C-27)
ONYX DESIGN & REMODELING INCWest Hills · General Building Contractor (B)
ONYX GARAGE DOORS INCGranada Hills · Specialty Contractor
ONYX GENERAL BUILDING INCGranada Hills · General Building Contractor (B)
ONYX GENERAL CONSTRUCTION COLos Angeles · General Building Contractor (B)ADU Construction · Home Additions · Major Remodeling
ONYX PLASTERINGBell Gardens · Lathing & Plastering Contractor (C-35)
OP ELECTRICAL INCInglewood · Electrical Contractor (C-10)
OPAL CONSTRUCTION COMPANYHawthorne · General Building Contractor (B)
OPALEE FIRE PROTECTION INCTarzana · Fire Protection Contractor (C-16)
OPEN BOOK HARDWOOD FLOORSReseda · Flooring Contractor (C-15)
OPEN FLOW PLUMBINGArleta · Plumbing Contractor (C-36)
OPEN SESAME GARAGE DOORSWoodland Hills · General Building Contractor (B) · Specialty Contractor
OPEN WINDOWS AND GLASS DOORSPanorama City · Glazing Contractor (C-17)
OPENLEVEL CONSTRUCTIONEl Monte · General Building Contractor (B)
OPERA CONSTRUCTIONSMarina Del Rey · General Building Contractor (B)
OPES LLCLa Mirada · General Building Contractor (B)
OPIO CONSTRUCTION INCWoodland Hills · General Building Contractor (B)
OPOS HENRYLos Angeles · Fire Protection Contractor (C-16)
OPPOSITE WEATHER HEATING & AIR CONDITIOINGNorwalk · HVAC Contractor (C-20)
OPTEK COMMUNICATIONSRedondo Beach · Low Voltage Systems Contractor (C-7)
OPTERRA ENERGY SERVICES LLCPasadena · General Engineering Contractor (A) · General Building Contractor (B) · Electrical Contractor (C-10) · Solar Contractor (C-46)Resiliency · Operational Efficiency · Facilities & Infrastructure Modernizatio
OPTIC TEL INCBurbank · Low Voltage Systems Contractor (C-7) · Specialty Contractor
OPTIMA DESIGN AND BUILD INCLos Angeles · General Building Contractor (B)Design & Build · ADU Construction · Home Additions
OPTIMA DOOR & FRAME INCLos Angeles · Specialty Contractor
OPTIMA ELECTRICRowland Heights · Electrical Contractor (C-10)
OPTIMA ENERGY INCArtesia · Electrical Contractor (C-10)Has a website
OPTIMA GROUP INCDuarte · General Building Contractor (B)
OPTIMA PLUS CONSTRUCTION INCLos Angeles · General Building Contractor (B)
OPTIMAL BUILD & ELECTRIC INCWhittier · General Building Contractor (B) · Electrical Contractor (C-10)
OPTIMAL CONSTRUCTIONLa Puente · General Building Contractor (B)
OPTIMIZE GARAGE DOORRancho Palos Verdes · Specialty ContractorGarage Door Installation · Garage Door Repair · Glass Garage Doors
OPTIMO PLUMBING AND BACKFLOW INCLos Angeles · Plumbing Contractor (C-36)
OPTIMUM DRYWALLLancaster · Drywall Contractor (C-9)
OPTIMUM ELECTRICAL SOLUTIONSDowney · Electrical Contractor (C-10)
OPTIMUM EPOXY COATINGSMontebello · Specialty Contractor
OPTIMUM HEATING AND AIR CONDITIONINGGlendora · HVAC Contractor (C-20)
OPTIMUM PAINTING COMPANYLos Angeles · Painting Contractor (C-33)
OPTIMUM SEISMIC INCVernon · General Engineering Contractor (A) · General Building Contractor (B)Offers seismic retrofitting for buildings in earthquake-prone areas.
OPTIMUS CONSTRUCTION & PAINTING INCLancaster · General Building Contractor (B) · Painting Contractor (C-33)
OPTIMUS HVAC & PLUMBING INCCastaic · HVAC Contractor (C-20) · Plumbing Contractor (C-36)
OPTION TILE INSTALATIONBaldwin Park · Tile Contractor (C-54)
OPTION1 BUILDERS INCEncino · General Building Contractor (B)
OPTIONS PLUMBING COWhittier · Plumbing Contractor (C-36) · Specialty Contractor
OPTOMED DESIGN & CONSTRUCTIONWhittier · General Building Contractor (B) · Masonry Contractor (C-29)
OPULENT REMODELING & CONSTRUCTION INCLa Crescenta · General Building Contractor (B) · Concrete Contractor (C-8)
OPUS BUILDERS INCGlendale · General Building Contractor (B)Has a website
OR - 5 GENERAL CONTRACTOR CORPWoodland Hills · General Building Contractor (B) · Flooring Contractor (C-15) · HVAC Contractor (C-20) · Solar Contractor (C-46) · Specialty Contractor
OR BARELNorth Hills · General Building Contractor (B)
ORACLE CONSTRUCTION GROUP INCWhittier · General Building Contractor (B)
ORACLE CONSTRUCTION SERVICES INCLos Angeles · General Building Contractor (B)
ORAGON ELECTRICLakewood · Electrical Contractor (C-10)Maintenance services · Renovations · New construction
ORALLANA CARLOS GUZMANNorth Hollywood · Electrical Contractor (C-10)
ORAN REMODELING INCSherman Oaks · General Building Contractor (B)Kitchen remodeling · Bathroom remodeling · Room additions
ORAN'S ELECTRICEncino · Electrical Contractor (C-10)
ORANGE COAST SOLARNorth Hollywood · General Engineering Contractor (A) · Electrical Contractor (C-10) · Plumbing Contractor (C-36)
ORANGE CONSTRUCTION INCAlhambra · General Building Contractor (B)
ORANGE COUNTY PAINTING PROEncino · Painting Contractor (C-33)
ORANGE GARAGE DOORSPico Rivera · Specialty ContractorGarage door installation · Garage door repair · Garage door maintenance
ORANGE INNOVATION INCWoodland Hills · General Building Contractor (B)
ORANGE PROPERTY COWest Covina · General Building Contractor (B)
ORANGE STRUCTURAL STEEL AND FABRICATIONPomona · Steel Contractor (C-50, C-51)
ORANGE ZONE CONSTRUCTION INCLos Angeles · General Building Contractor (B)
ORANGEBIN INCLos Angeles · General Building Contractor (B)
ORBELL CONSTRUCTION CORPORATIONGlendale · General Building Contractor (B)
ORBIT AIR CONDITIONINGWinnetka · HVAC Contractor (C-20)
ORBIT BUILDERS INCCalabasas · General Building Contractor (B)
ORBIT WIRING ELECTRIC SYSTEMS INCLos Angeles · Electrical Contractor (C-10)
ORBIX PLUMBINGSun Valley · Plumbing Contractor (C-36)
ORCA WORKX BUILDING COMPANYWest Hills · General Building Contractor (B)
ORCHARD CONSTRUCTIONRedondo Beach · General Building Contractor (B)
ORCHARD LANDSCAPINGBeverly Hills · Landscaping Contractor (C-27)
ORCHID BUILDERS INCEncino · General Building Contractor (B)
ORCHID LANDSCAPE INCPasadena · Landscaping Contractor (C-27) · Specialty Contractor
ORCO ROOFING & CONSTRUCTION INCPico Rivera · General Building Contractor (B) · Roofing Contractor (C-39)
ORDAZ CONSTRUCTION COMPANYCovina · General Building Contractor (B)
ORDAZ'S GENERAL CONSTRUCTION INCGlendora · General Building Contractor (B)
ORDEP PLUMBINGReseda · Plumbing Contractor (C-36)
ORDIN LANCE CONSTRUCTION COLos Angeles · General Building Contractor (B)
ORDONEZ BROTHERS CONSTRUCTION INCLancaster · General Building Contractor (B)
ORDONEZ NORMANLos Angeles · General Building Contractor (B)
ORDONEZ RENELos Angeles · Electrical Contractor (C-10)
ORDONZ FIDELLos Angeles · Painting Contractor (C-33)
ORE ELECTRICLa Mirada · Electrical Contractor (C-10)
OREA PAINTING INCNewhall · Painting Contractor (C-33)
OREA SIMON INOCENCIOSouth Gate · Steel Contractor (C-50, C-51)
OREGON CONSTRUCTIONPasadena · General Building Contractor (B)
ORELLANA BUILDERS INCLos Angeles · General Building Contractor (B)
ORELLANA ELECTRICAL COMPANYWinnetka · General Building Contractor (B) · Electrical Contractor (C-10)
ORELLANA GERMAN CONSTRUCTIONWest Hills · General Building Contractor (B)
ORELLANA RAFAEL ANTONIOLos Angeles · Cabinet, Millwork & Finish Carpentry (C-6)
ORELLANA ROLANDOVan Nuys · Painting Contractor (C-33)
ORELLANA'S CONSTRUCTION INCWhittier · General Building Contractor (B)
OREN CONSTRUCTIONLos Angeles · General Engineering Contractor (A) · General Building Contractor (B) · Specialty Contractor
OREN DEVELOPMENT GROUP INCLos Angeles · General Building Contractor (B) · Electrical Contractor (C-10)
ORENDAIN BUILDING CONTRACTING CORPWhittier · General Building Contractor (B)
ORESKOVICH NICHOLASLomita · Electrical Contractor (C-10)
ORETA RAMON GTorrance · General Building Contractor (B)
ORGA CONSTRUCTION INCN Hollywood · General Building Contractor (B)
ORGANIC AV INCTorrance · Low Voltage Systems Contractor (C-7)
ORGANIC LIFE CONSTRUCTIONLos Angeles · General Building Contractor (B)
ORGANICA CREATIONS LLCLos Angeles · General Building Contractor (B)
ORGANIZED GARAGE SOLUTIONSPasadena · Cabinet, Millwork & Finish Carpentry (C-6) · Flooring Contractor (C-15)
ORGANIZIT INCChatsworth · General Building Contractor (B) · Specialty ContractorCustom closets · Walk-in closets · Reach-in closets
ORI OHANA CONSTRUCTIONOak Park · General Building Contractor (B)
ORIA BUILDERSTarzana · General Building Contractor (B) · Electrical Contractor (C-10)
ORIAN CONSTRUCTION AND ROOFING INCSherman Oaks · General Building Contractor (B) · Roofing Contractor (C-39) · Specialty ContractorRoof Repair · Roof Replacement · Leak Detection
ORIGIN ELECTRICAL CALIFORNIA INCORPORATEDWest Hills · Electrical Contractor (C-10)
ORIGIN HOME MEDIAAgoura Hills · Low Voltage Systems Contractor (C-7)
ORIGIN PAVING INCLos Angeles · Earthwork & Paving Contractor (C-12)
ORIGINAL HABITAT LOS ANGELES LANDSCAPE DESIGNLos Angeles · Landscaping Contractor (C-27)
ORIGINAL RICHARD LLCWilmington · General Building Contractor (B) · Painting Contractor (C-33)Carpentry & Electrical · Stucco & Painting · Plumbing
ORIGINAL WESTWOOD PLUMBING INCHermosa Beach · Plumbing Contractor (C-36)
ORIGINAL WOODCHUCK THENorth Hollywood · Cabinet, Millwork & Finish Carpentry (C-6)
ORIGINS CONSTRUCTION INCTorrance · General Building Contractor (B)
ORION DCS LLCLos Angeles · General Building Contractor (B)
ORION ELECTRIC COVan Nuys · Electrical Contractor (C-10)
ORION HVACVan Nuys · General Building Contractor (B) · Electrical Contractor (C-10) · HVAC Contractor (C-20)AC Repair · AC Installation · AC Replacement
ORION ROOFING & WATERPROOFINGReseda · General Building Contractor (B) · Roofing Contractor (C-39)
ORION SECURITY SYSTEMSPico Rivera · Electrical Contractor (C-10)
ORIONONE COMMTECHLa Verne · Low Voltage Systems Contractor (C-7)
ORLAN CUSTOM PAINTING INCParamount · Painting Contractor (C-33)
ORLANDO ALMARAZ VARGASSun Valley · Plumbing Contractor (C-36)
ORLANDO GLASSBurbank · Glazing Contractor (C-17)
ORLANDO'S CONCRETE & PAVERS INCSylmar · Concrete Contractor (C-8) · Earthwork & Paving Contractor (C-12) · Demolition Contractor (C-21)
ORLANDO'S PLUMBING & ROOTERGranada Hills · Plumbing Contractor (C-36)
ORLOV CONSTRUCTIONPanorama City · General Building Contractor (B)
ORLYS DRAPERIES & INTERIORS INCGlendora · Specialty ContractorCellular Shades · Roller Shades · Roman Shades
ORM PAINTINGLos Angeles · Painting Contractor (C-33)
ORNAMENTAL FOUNTAIN COMPANYArleta · Specialty Contractor
ORNAMENTAL METALLynwood · Specialty Contractor
ORNAMENTAL PRECISION WELDERPacoima · Specialty Contractor
ORNAZ CONSTRUCTIONRedondo Beach · General Engineering Contractor (A) · General Building Contractor (B)
ORNELAS CONSTRUCTION INCSylmar · General Engineering Contractor (A) · Demolition Contractor (C-21)
ORO BUILDERS INCWhittier · General Building Contractor (B) · Glazing Contractor (C-17)
ORO COAST BUILDERS INCWoodland Hills · General Building Contractor (B)Kitchen Remodeling · Bathroom Remodeling · Home Additions
ORO ELECTRIC INCReseda · Electrical Contractor (C-10)
ORONOZ JIM PAINTINGCovina · Painting Contractor (C-33)
OROS CONSTRUCTION SERVICES INCSouth Gate · General Building Contractor (B)
OROY DEVELOPMENT INCNorth Hollywood · General Building Contractor (B)
OROZCO CONSTRUCTION ENTERPRISESGardena · General Building Contractor (B)
OROZCO CONSTRUCTION LLCAgua Dulce · General Building Contractor (B)
OROZCO EDUARDO ENRIQUELos Angeles · Electrical Contractor (C-10)
OROZCO FENCE WORKSCanoga Park · Fencing Contractor (C-13)
OROZCO LANDSCAPE AND TREE COPomona · General Building Contractor (B) · Landscaping Contractor (C-27) · Plumbing Contractor (C-36) · Specialty ContractorLandscape Maintenance · Landscape Installation · Tree Trimming
OROZCO LUISWilmington · Lathing & Plastering Contractor (C-35)
OROZCO'S ELECTRIC INCDowney · Electrical Contractor (C-10)
ORPE HOWARD GTorrance · Painting Contractor (C-33)
ORR CONSTRUCTION COMPANYSignal Hill · General Engineering Contractor (A) · General Building Contractor (B) · HVAC Contractor (C-20)New builds · Remodels · Additions
ORR WILLIAMWoodland Hills · Flooring Contractor (C-15)
ORRAVAN MECHANICAL INCLakewood · HVAC Contractor (C-20)
ORRICO BRADGranada Hills · General Building Contractor (B)
ORSEL STANLEY MCGHEE IVPasadena · General Building Contractor (B)
ORTAM CONSTRUCTION INCCalabasas · General Building Contractor (B) · Demolition Contractor (C-21) · Plumbing Contractor (C-36)
ORTEGA BUILDERS & COWoodland Hills · General Building Contractor (B)
ORTEGA BUILDING INCLos Angeles · General Building Contractor (B)
ORTEGA CONSTRUCTIONLa Puente · General Building Contractor (B)Room additions and garages · Commercial and office remodeling · Home remodeling
ORTEGA FINISH CARPENTRYRosemead · Cabinet, Millwork & Finish Carpentry (C-6)
ORTEGA J. CONSTRUCTIONCovina · General Building Contractor (B)
ORTEGA JOSE G ELECTRICPanorama City · Electrical Contractor (C-10)
ORTEGA MASONRY INCWest Hills · Masonry Contractor (C-29)
ORTEGA PLUMBING SERVICES INCLos Angeles · Plumbing Contractor (C-36)
ORTEGA QUALITY DRYWALLHuntington Park · Drywall Contractor (C-9)
ORTEGA'S HARDWOOD FLOORS CORPHuntington Park · Flooring Contractor (C-15)
ORTEGA'S PLUMBINGVan Nuys · Plumbing Contractor (C-36)
ORTEGA'S PLUMBING SOLUTIONSSan Fernando · Plumbing Contractor (C-36)
ORTIZ ALFREDOCommerce · General Building Contractor (B)
ORTIZ ARMANDO ESTRADAArleta · General Building Contractor (B)
ORTIZ BROTHER PAINTINGLakewood · Electrical Contractor (C-10) · Painting Contractor (C-33)
ORTIZ BUILDERS INCBellflower · General Building Contractor (B)
ORTIZ BUILDINGNorwalk · General Building Contractor (B)
ORTIZ BUILDING CONTRACTORS INCLittlerock · General Building Contractor (B)

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