Alameda County companies starting with O

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

O B CONSTRUCTIONSan Lorenzo · General Building Contractor (B)
O C JONES & SONS INCBerkeley · General Engineering Contractor (A) · Specialty Contractor
O I BUILDWORKSHayward · General Building Contractor (B)
O P G CONSTRUCTIONLivermore · General Building Contractor (B)
O T ELECTRIC INCOakland · Electrical Contractor (C-10)
O VALLEY CONSTRUCTIONSan Leandro · General Building Contractor (B)
O'CALLAGHAN CONSTRUCTIONPleasanton · General Building Contractor (B)
O'CLAVIN PAINTINGAlameda · Painting Contractor (C-33)
O'CONNELL CONSTRUCTS LLCEmeryville · General Building Contractor (B)
O'CONNOR J CONSTRUCTIONOakland · General Building Contractor (B)
O'FRANKIE CONSTRUCTION CORPORATIONAlameda · General Building Contractor (B)
O'LEARY CONSTRUCTIONBerkeley · General Building Contractor (B)
O'NEIL W E CONSTRUCTION CO OF NORCALPleasanton · General Building Contractor (B)
O'NEILL BUILT CONSTRUCTIONAlameda · General Building Contractor (B) · Concrete Contractor (C-8)
O'NEILL J M INCLivermore · General Building Contractor (B)Planning and scheduling · Estimating · Cost control
OAK BAY BUILDEROakland · General Building Contractor (B)
OAK GENERAL CONSTRUCTION INCOakland · General Building Contractor (B)
OAK LEAF PAINTING AND MAINTENANCE INCOakland · Painting Contractor (C-33)
OAK PARK CONSTRUCTIONOakland · General Building Contractor (B)Offices · Restaurants · Hotels
OAK PATCH BUILDINGAlameda · General Building Contractor (B)
OAK TREE PAINTING LLCAlameda · Painting Contractor (C-33)
OAKAL CONSTRUCTION INCOakland · General Building Contractor (B)
OAKLAND AESTHETICS TREE CAREBerkeley · Specialty Contractor
OAKLAND CONSTRUCTIONOakland · General Building Contractor (B)
OAKLAND ROOTER PLUMBING INCOakland · Plumbing Contractor (C-36)
OAKLAND STONE LANDSCAPING DESIGNOakland · Landscaping Contractor (C-27)
OAKLAND UNITED STUDIOSOakland · Low Voltage Systems Contractor (C-7) · Specialty Contractor
OAKLAND WOOD FLOORSOakland · Flooring Contractor (C-15)
OAKLINE ELECTRICOakland · Electrical Contractor (C-10)
OAKLINE ELECTRIC LLCOakland · Electrical Contractor (C-10)
OAKSTEADOakland · General Building Contractor (B)
OAKVIEW SHUTTERS AND BLINDSOakland · Specialty Contractor
OATES ROOFINGFremont · Roofing Contractor (C-39) · Specialty Contractor
OBR ELECTRIC LIMITED LIABILITY COOakland · Electrical Contractor (C-10)
OBRA CONSTRUCTION & BUILDING SERVICES LLCBerkeley · General Building Contractor (B)
OC JONES & SONSBerkeley · General Engineering Contractor (A) · Specialty ContractorSite grading · Excavation · Asphalt paving
OC PLUMBING & WATER HEATERSNewark · Plumbing Contractor (C-36)
OCD PLAN & BUILD INCOakland · General Building Contractor (B)Custom home building and ADU constructio · Foundation and structural repairs · Kitchen and bathroom remodeling
OCEAN BAY PLUMBING INCHayward · Plumbing Contractor (C-36)
OCEAN HVACHayward · HVAC Contractor (C-20)
OCEAN PLUMBINGOakland · Plumbing Contractor (C-36)
OCEAN REMODEL INCCastro Valley · General Building Contractor (B)Full home remodeling · Kitchen remodeling · Bathroom remodeling
OCULIS LLCPleasanton · General Building Contractor (B)
OELLRICH NEILLivermore · General Building Contractor (B)
OFF THE STREET GENERAL CONTRACTING INCHayward · General Building Contractor (B)
OG GENERAL BUILDERS INCHayward · General Building Contractor (B)
OGRESEVIC DENISDublin · General Building Contractor (B)
OJ COMMERCIAL FLOORINGLivermore · Flooring Contractor (C-15)
OK HEATING AND AIR CONDITIONING INCLivermore · HVAC Contractor (C-20) · Sheet Metal Contractor (C-43)Air Conditioning · Heating · Indoor Air Quality
OKI LANDSCAPING INCOakland · Landscaping Contractor (C-27)
OLCZAK BUILDOakland · General Building Contractor (B)
OLDER'S LANDSCAPINGPleasanton · Landscaping Contractor (C-27)
OLIVAS CONSTRUCTIONHayward · General Building Contractor (B)
OLIVE REMODELINGEmeryville · General Building Contractor (B)
OLIVER & SONFremont · General Building Contractor (B)
OLIVER & WALKER CONSTRUCTION LLCHayward · General Building Contractor (B)
OLIVER BUILDERS INCBerkeley · General Building Contractor (B)New Construction · Whole House Remodels · Elements of Design
OLIVER GARDENS LLCOakland · Landscaping Contractor (C-27)
OLIVER HEATING AND AIRSan Lorenzo · HVAC Contractor (C-20)
OLMEDO'S CONSTRUCTION INCDublin · General Building Contractor (B)
OLSEN CONSULTINGCastro Valley · General Building Contractor (B)
OLSEN PAINTINGPleasanton · Painting Contractor (C-33)
OLSON AND CO STEELSan Leandro · General Engineering Contractor (A) · General Building Contractor (B) · Steel Contractor (C-50, C-51)Fabrication / Field-erection · Engineering / Detailing · BIM Modeling
OLSON CLIFF CONSTRUCTIONCastro Valley · General Building Contractor (B)
OLSON ELECTRICAL SERVICESSan Leandro · Electrical Contractor (C-10)
OLSON JACK D DESIGN & CONSTRUCTION COCastro Valley · General Building Contractor (B) · Earthwork & Paving Contractor (C-12)
OLSON'S PAINTING COMPANYAlameda · Painting Contractor (C-33)
OLWIN LANDSCAPE DESIGN & CONSTRUCTION INCPleasanton · General Building Contractor (B) · Landscaping Contractor (C-27)
OLYMPIC HEATING AND AIROakland · HVAC Contractor (C-20)
OM HEATING & AIR CONDITIONING INCBerkeley · HVAC Contractor (C-20)
OM PLUMBING SERVICELivermore · Plumbing Contractor (C-36)
OMEGA ROOFING SOLUTIONSLivermore · Roofing Contractor (C-39)
OMEGA TERMITE AND PEST CONTROL INCOakland · General Building Contractor (B)Residential Pest Control · Commercial Pest Control · Termites
OMEGAN CONSTRUCTIONOakland · General Building Contractor (B)
OMNI MECHANICAL SOLUTIONSLivermore · General Building Contractor (B) · HVAC Contractor (C-20)
OMNISTONE MASONRY INCHayward · Masonry Contractor (C-29)
OMR CONSTRUCTION GROUP REALESTATE INVESTMENT INCSan Leandro · General Building Contractor (B)
ON POINT CONSTRUCTIONCastro Valley · General Building Contractor (B) · Painting Contractor (C-33)
ON R WAY PLUMBING LLCHayward · Plumbing Contractor (C-36)
ON SITE GENERAL ENGINEERING INCLivermore · General Engineering Contractor (A)
ON THE CLOCK ROOTER @ PLUMBINGOakland · Plumbing Contractor (C-36)
ON THE LEVEL CONSTRUCTIONAlameda · General Building Contractor (B)
ON THE SURFACE FLOORING INCHayward · Flooring Contractor (C-15) · Tile Contractor (C-54)Occupied-space tenant improvement · New construction · Broadloom carpet
ON TIME BUILDERSNewark · General Building Contractor (B) · Flooring Contractor (C-15)
ON TOP CONSTRUCTION INCLivermore · General Building Contractor (B)Commercial Construction Services · On-call Maintenance Services · Store Fixture Services
ON-SITE COMMERCIAL SERVICES INCLivermore · General Engineering Contractor (A) · General Building Contractor (B)Directional boring · Trenching · Aerial restoration
ONE - CONNECTION REMODELING AND REPAIRSOakland · General Building Contractor (B)
ONE OF THE BEST PAINTINGFremont · Painting Contractor (C-33)
ONE SCAFFOLDING INCSan Leandro · Specialty Contractor
ONE STEP PLUMBINGBerkeley · Plumbing Contractor (C-36)
ONE STOP MODERNIZATIONSan Lorenzo · General Building Contractor (B) · Low Voltage Systems Contractor (C-7) · Electrical Contractor (C-10) · Plumbing Contractor (C-36)
ONE TOUCH ELECTRIC LLCAlameda · Electrical Contractor (C-10)
ONE TWO TREE CARE INCFremont · Specialty Contractor
ONE TWO TREES COMPANYOakland · Specialty ContractorTree work · Tree removal · Stump removal
ONELAWN SYNTHETIC TURFSan Lorenzo · Specialty Contractor
ONLY ONE CONSTRUCTION COHayward · General Building Contractor (B)
ONTIME GARAGE DOOR SERVICEHayward · Specialty Contractor
ONWARD PAINTINGSan Leandro · Painting Contractor (C-33)Interior painting · Exterior painting · Commercial painting
ONZONE HEATING & COOLING INCPleasanton · HVAC Contractor (C-20)
OPPENHEIMER IDO TILEBerkeley · Tile Contractor (C-54)
OPTIMAL HOME & DESIGN & CONSTRUCTIONFremont · General Building Contractor (B)
ORANGE ENGINEERING LLCFremont · General Building Contractor (B)
ORANGE GATE STUCCOHayward · Lathing & Plastering Contractor (C-35)
OREAPleasanton · General Building Contractor (B)
ORFIL CONSTRUCTIONHayward · General Building Contractor (B)
ORIENTAL LANDSCAPINGOakland · Landscaping Contractor (C-27)
ORIENTAL LANDSCAPING COHayward · Landscaping Contractor (C-27)
ORIGINAL CRAFTERS THEOakland · General Building Contractor (B)
ORION PLUMBINGSan Lorenzo · Plumbing Contractor (C-36)
ORO CONSTRUCTIONUnion City · General Building Contractor (B)
OROZCO PAINTING & DECORATINGAlameda · Painting Contractor (C-33)
OROZCOLLECTIVE CONSTRUCTION INCOakland · General Building Contractor (B)
ORR CHRISTOPHEROakland · General Building Contractor (B)
ORTEGA'S & SONS CONSTRUCTION INCHayward · General Building Contractor (B)
ORTEGA'S BAY AREA GENERAL CONSTRUCTION INCHayward · General Building Contractor (B)
ORTEGA'S CONSTRUCTIONOakland · General Building Contractor (B)
ORTH CONSTRUCTION INCLivermore · General Building Contractor (B)
ORTIZ CONSTRUCTIONHayward · General Building Contractor (B)
ORTIZ DRYWALLFremont · Drywall Contractor (C-9)
ORTIZ PLUMBING DRAIN CLEANINGLivermore · Plumbing Contractor (C-36) · Specialty Contractor
ORTIZ TILELivermore · Tile Contractor (C-54)
ORTZOW CYDNEY PAINTING INCOakland · Painting Contractor (C-33)
OSCAR CONSTRUCTION & REMODELING INCOakland · General Building Contractor (B)
OSCAR'S GLASSCastro Valley · Glazing Contractor (C-17)
OSCITOBerkeley · Landscaping Contractor (C-27)
OSMAN CONSTRUCTION INCCastro Valley · General Building Contractor (B)
OSORIO MARIOSan Leandro · Painting Contractor (C-33)
OTAI CONSTRUCTION INCOakland · General Building Contractor (B)
OTHER GUYS THE PAINTING COHayward · Painting Contractor (C-33)
OTTER CONSTRUCTIONPleasanton · General Engineering Contractor (A) · Specialty Contractor · General Building Contractor (B) · Fire Protection Contractor (C-16)
OUR HANDY HELPERCastro Valley · General Building Contractor (B)
OUTDOOR ENVIRONMENTAL SERVICES INCLivermore · Landscaping Contractor (C-27)
OUYANG GENERAL ENGINEERING INCSan Leandro · General Engineering Contractor (A) · General Building Contractor (B) · Electrical Contractor (C-10) · Fire Protection Contractor (C-16) · HVAC Contractor (C-20) · Plumbing Contractor (C-36)
OVER THE WOODSMAN BUILDER INCOakland · General Building Contractor (B)
OWENCastro Valley · General Engineering Contractor (A) · General Building Contractor (B) · Specialty Contractor
OWEN JAMES PAINTING & DECORATINGDublin · Painting Contractor (C-33)
OWEN KREBS GRIMSICHBerkeley · HVAC Contractor (C-20)
OWOW CONSTRUCTION LLCOakland · General Building Contractor (B)
OX CONSTRUCTION INCAlameda · General Building Contractor (B)
OXILIUM SERVICES INCPleasanton · Low Voltage Systems Contractor (C-7)
OZIER NICK W DESIGN AND CONSTRUCTIONOakland · General Building Contractor (B)Home remodels · Additions · Fix-up projects

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