| Reason Construction | Chuck Steele Reason | — | (831) 566 9530 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Redwood Coast Builders | Redwood Coast Builders | — | (831) 431 0799 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Redwood Coast Landscaping | Redwood Coast Landscaping | jeffredwoodcoast66@yahoo.com | (831) 331 0023 | Windows, patio, painters | Felton · Santa Cruz County | — | — |
| Redwood Pipe And Drain INC | Michael Jon Miranda | — | (831) 706 5620 | Other | Scotts Valley · Santa Cruz County | — | — |
| Redwood Remodeling Co | Juan Carlos Nevarez Guizar | — | (831) 316 8899 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Redwood Roofing INC | Philip Jordan Hastings | — | (831) 888 7790 | Other roofers | Watsonville · Santa Cruz County | — | — |
| Reed Anton Sammet | Reed Anton Sammet | — | (831) 325 9803 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Reed Electric | James Edward Reed | — | (408) 781 8278 | Electricians | Soquel · Santa Cruz County | — | — |
| Reese Findley Steel Fabrication LLC | Reese King Findley | — | (831) 465 4477 | Other | Scotts Valley · Santa Cruz County | — | — |
| Refrigeration | Henry Raymond Castillo | — | (831) 234 3813 | HVAC | Scotts Valley · Santa Cruz County | — | — |
| Regan Studios | Regan Studios | — | (831) 338 4763 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Rehnberg Construction | Jesse Lee Rehnberg | — | (831) 246 1564 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Reinwater Gardens INC | Douglas Edward Briggs | — | (415) 745 0627 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Reith Electrical Contracting INC | William Christopher Reith | — | (831) 227 3131 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Reliable Maintenance & Construction | David W Lynch | — | (831) 464 7881 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Reliance Services | Todd Francis Matthews | — | (831) 419 3660 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Rem Builders | Rem Builders | — | (831) 239 4899 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Remediation Risk Management INC DBA Triton Construction | Carrie Jo Peoples | — | (831) 475 8141 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Rene Alminiana Painting | Rene Alminiana Painting | — | (831) 228 2607 | Windows, patio, painters | La Selva Beach · Santa Cruz County | — | — |
| Renteria Painting | Renteria Painting | — | (831) 345 0881 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| Resendiz M Construction | Miguel Angel Resendiz Camacho | — | (831) 254 4111 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Resendiz Verbraken Builders | Corrie Lynn Verbraken | — | (831) 713 7489 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Resolute HVAC Repair Santa Cruz | Resolute HVAC Repair Santa Cruz | — | (831) 284-1747 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| Resonant Communication Systems | Resonant Communication Systems | — | (831) 240 8935 | Other | Ben Lomond · Santa Cruz County | — | — |
| Reverence Electric | Ernest Albert Garcia | — | (831) 251 0856 | Electricians | Corralitos · Santa Cruz County | — | — |
| Reviance Home Improvement | Reviance Home Improvement | — | (831) 566 0344 | GC, remodel, ADU | Freedom · Santa Cruz County | — | — |
| Revival Painting | Revival Painting | — | (916) 410 5515 | Windows, patio, painters | Boulder Creek · Santa Cruz County | — | — |
| Rewild Designs LLC | Covey Amajho Potter | — | (831) 345 1399 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Riccabona's Landscape & Tree Service INC | Anthony Steven Jr Riccabona | — | (831) 427 3511 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Rich Van Dine | Rich Van Dine | — | (831) 588 1970 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Richard Bros Flooring LLC | Fonseca Hernandez Ricardo | — | (831) 334 7888 | Other | Watsonville · Santa Cruz County | — | — |
| Richard E Hayes | Richard E Hayes | — | (831) 251 8328 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Richard K Danforth DBA Danforth Construction | Richard Keith Danforth | — | (831) 454 6435 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Richard Oliveros DBA North Coast Construction | Oliveros Richard | — | (831) 325 3209 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Richard Wygant's Good Karma Painting | Richard Wygant's Good Karma Painting | — | (831) 239 2817 | Windows, patio, painters | Soquel · Santa Cruz County | — | — |
| Richard's Tree Service | Richard Wayne Rohrbough | — | (831) 338 9294 | Tree | Boulder Creek · Santa Cruz County | — | — |
| Rick Feffer Construction | Richard Steven Feffer | — | (831) 566 6188 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Rick J Brereton Construction | Richard John Brereton | — | (707) 480 1153 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Ridgeline Electric | Ridgeline Electric | info@ridgelineelec.com | (831) 206-5602 | Electricians | Soquel · Santa Cruz County | — | — |
| Ridgeline Electrical Group Incorporated | James Matthew Bane | — | (408) 966 3443 | Electricians | Soquel · Santa Cruz County | — | — |