| Oliveira's Fashion Floors INC DBA Oliveira's Restoration | Medina Joel A Diaz | — | (805) 736 9399 | GC, remodel, ADU | Lompoc · Santa Barbara County | — | — |
| Oliver Jimenez Bello | Oliver Jimenez Bello | — | (805) 886 7563 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Ollie Construction INC | David Richard Olivera | — | (805) 448 7971 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Olvera Masonry INC | Olvera Isidro | — | (805) 680 1981 | Other | Carpinteria · Santa Barbara County | — | — |
| Olympic Construction Co | Richard Alan Schroeder | — | (805) 570 5342 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Omega Concrete Construction INC | Michael Thomas Brennan | — | (805) 806 1872 | Other | Lompoc · Santa Barbara County | — | — |
| Omnico Cad | Oscar N Marentes | — | (805) 922 4731 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| Optimum Property Solutions | Aceves Jesus Sanchez | — | (805) 314 9588 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| Ordaz Flooring | Ordaz Flooring | — | (805) 722 4059 | Other | Lompoc · Santa Barbara County | — | — |
| Orena Development Corp | Robert Webb Rickard | — | (415) 710 7125 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Organ & Sons Mechanical INC | Gregory Louis Organ | — | (805) 928 8844 | HVAC | Santa Maria · Santa Barbara County | — | — |
| Origin Technology Systems LLC | Thomas Charles Applebay | info@origintechsystems.com | (805) 268 7620 | Other | Santa Maria · Santa Barbara County | — | — |
| Orin Fails Electric | Orin Wayne Fails | — | (805) 689 1785 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| Ornamental And Architectural Ironwork INC | Assem Khalil De Machkie | — | (805) 962 4334 | Other | Santa Barbara · Santa Barbara County | — | — |
| Ornelas Painting | Ornelas Painting | alex@ornelaspainting.com | (805) 266 4899 | Windows, patio, painters | Santa Maria · Santa Barbara County | — | — |
| Ortiz Custom Homes INC | Maryhelen Guizar Ortiz | — | (805) 896 9421 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| Ortiz Pro Painting | Ortiz Pro Painting | — | (805) 319 0913 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| Ortiz Tile | Gregorio Jr Ortiz | — | (805) 688 0803 | Other | Solvang · Santa Barbara County | — | — |
| Oscar Mendoza Salazar | Oscar Mendoza Salazar | — | (805) 453 2859 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Oscar Sanchez | Oscar Sanchez | — | (818) 421 8206 | HVAC | Santa Barbara · Santa Barbara County | — | — |
| Oscar's Pro Painting | Oscar's Pro Painting | — | (805) 448 5312 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Osito Painting | Osito Painting | — | (805) 617 6697 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| Oswald INC | John Thomas Oswald | firstname@oswald.com | (805) 886 9593 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Out Last Painting Company | Warren Thomas Spears | — | (805) 314 6709 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| Outside Open LLC DBA Outside Open Low Voltage | Paul Every Scherz | — | (805) 364 4508 | Other | Santa Barbara · Santa Barbara County | — | — |
| Overhead Door Company Of The Tri-counties | Donald George Van Buren | — | (805) 965 0539 | Other | Santa Barbara · Santa Barbara County | — | — |
| Owen Construction | Bryce Christopher Owen | — | (805) 350 9018 | GC, remodel, ADU | Solvang · Santa Barbara County | — | — |
| Owen Finley Construction INC DBA Finley Construction | Owen Jefferson Iii Finley | — | (805) 722 2181 | GC, remodel, ADU | Goleta · Santa Barbara County | — | — |
| Owens Electric | David Anthony Owens | interested@domainmarket.com | (805) 563 9495 | Electricians | Santa Barbara · Santa Barbara County | — | — |
| Oxla Framing INC | Israel Flores-Ortiz | — | (805) 363 2408 | Other | Santa Maria · Santa Barbara County | — | — |
| P C Botello Landscape | P C Botello Landscape | — | (805) 698 3203 | Windows, patio, painters | Santa Barbara · Santa Barbara County | — | — |
| P C Mechanical INC | Llewellyn Frank Parker | — | (805) 925 2888 | GC, remodel, ADU | Santa Maria · Santa Barbara County | — | — |
| P Ferdolage Enterprises INC DBA Abbey Carpet Of Santa Maria | Edgar Edward Jr Corteguera | — | (805) 347 1121 | Other | Santa Maria · Santa Barbara County | — | — |
| P J T Builders | P J T Builders | — | (805) 451 4425 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| P L Zeoli Company | Paul Lewis Zeoli | — | (323) 854 0121 | GC, remodel, ADU | Carpinteria · Santa Barbara County | — | — |
| P O C Painting | P O C Painting | — | (805) 588 2870 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| P Tell Painting | P Tell Painting | — | (805) 736 2045 | Windows, patio, painters | Lompoc · Santa Barbara County | — | — |
| P&c General Contracting LLC | Paul Anthony Darbro | — | (805) 944 5472 | GC, remodel, ADU | Santa Barbara · Santa Barbara County | — | — |
| Pablo F Hernandez | Pablo F Hernandez | — | (805) 757 6968 | GC, remodel, ADU | Lompoc · Santa Barbara County | — | — |
| Pacheco Plastering | Oscar Antonio Pacheco Perez | — | (805) 720 5325 | Other | Santa Maria · Santa Barbara County | — | — |