| Quality Arbor Care INC | Henry Martin Iii Bosinger | — | (831) 423 6441 | Tree | Capitola · Santa Cruz County | — | — |
| Quality General Builders INC | Medina Alejandro Castaneda | — | (831) 254 6067 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Quantum Av | Quantum Av | — | (831) 201 8201 | Other | Santa Cruz · Santa Cruz County | — | — |
| Quartzz Construction | Amolak Singh Sarai | — | (831) 706 6212 | GC, remodel, ADU | Freedom · Santa Cruz County | — | — |
| Quilici Gardening And Landscaping INC | Kristina Hale Quilici | — | (831) 425 5269 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Quinn Electronics | Thomas D'arcy Quinn | info@quinnelectronics.com | (831) 475 0423 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| R & D Pools | R & D Pools | rdpools.la@gmail.com | (310) 392-3738 | Pool | Soquel · Santa Cruz County | — | — |
| R & G Painting | R & G Painting | — | (831) 914 5103 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |
| R A M Tile Service | Robert Anthony Murtha | — | (831) 818 7999 | Other | Santa Cruz · Santa Cruz County | — | — |
| R C Carter Electric | Robin Christopher Carter | — | (831) 588 9110 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| R F Amos Construction | Robert Franklin Amos | — | (831) 335 4015 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| R G Pinnell Construction | Robert Gerome Pinnell | — | (831) 840 0844 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| R Hui Construction | Rufus Kakhuna Hui | — | (831) 461 5886 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| R Lowy Fire Protection INC | Reuven Lowy | — | (831) 457 1720 | Other | Santa Cruz · Santa Cruz County | — | — |
| R M C Plumbing | R M C Plumbing | — | (831) 278 6129 | Other | Santa Cruz · Santa Cruz County | — | — |
| R M Plumbing | R M Plumbing | — | (831) 334 2130 | Other | Santa Cruz · Santa Cruz County | — | — |
| R Roddick Pool Construction INC | Bradley David Roddick | bdrpools@aol.com | (831) 588 9262 | Pool | Santa Cruz · Santa Cruz County | — | — |
| R S Electric | Raymond Jr Solorio | ryan@rselectric.com | (831) 421 1251 | Electricians | Watsonville · Santa Cruz County | — | — |
| R S Watt Co | Thomas Andrew Walker | — | (650) 207 3652 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| R W Construction | Richard G Jr Woosley | — | (408) 781 1854 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| R W R | R W R | — | (831) 438 2729 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| R W Smith Construction | Richard Walter Smith | — | (831) 438 4530 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| R W Wilbur Construction | Robert Warren Wilbur | — | (831) 438 7881 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Radco Construction | Richard Alan Duckart | — | (831) 476 1117 | Other | Soquel · Santa Cruz County | — | — |
| Radiant Works INC | David Randall Coffey | info@radiantworks.net | (831) 724 1376 | Other | Watsonville · Santa Cruz County | — | — |
| Raines Construction | Raines Allen Janecka | — | (831) 252 2162 | GC, remodel, ADU | Ben Lomond · Santa Cruz County | — | — |
| Ralph Kliewer | Ralph Kliewer | — | (831) 566 2299 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Ramirez Concrete Construction Company | Steve Valentine Ramirez-gomez | — | (831) 295 1964 | Other | Watsonville · Santa Cruz County | — | — |
| Ramos Siding | Ramos Siding | — | (831) 431 3896 | Windows, patio, painters | Capitola · Santa Cruz County | — | — |
| Ramsey Iron INC | Christopher Dane Ramsey | — | (831) 359 1404 | Other | Soquel · Santa Cruz County | — | — |
| Ramsey Lath & Plaster INC | Bruce Alan Ramsey | — | (831) 464 1000 | Other | Soquel · Santa Cruz County | — | — |
| Randy Dean Kanawyer | Randy Dean Kanawyer | — | (831) 588 5413 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Ransone Construction INC | Douglas Alan Ransone | — | (831) 479 0792 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Raymond Construction | Ron Shelby Raymond | — | (831) 345 8730 | Other | Scotts Valley · Santa Cruz County | — | — |
| Raytec Electric | Simon Taylor Ray | — | (530) 386 3940 | Electricians | Santa Cruz · Santa Cruz County | — | — |
| Rc Concrete | Rc Concrete | — | (831) 818 7661 | Other | Watsonville · Santa Cruz County | — | — |
| Rdh Home Inspection | Rdh Home Inspection | — | (831) 427-3659 | Inspectors | Santa Cruz · Santa Cruz County | — | — |
| Reactic Restoration | Reactic Restoration | — | (831) 244-8545 | Restoration | Santa Cruz · Santa Cruz County | — | — |
| Real Home Design | Real Home Design | — | (831) 419 7423 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Real Vision Landscaping & Design LLC | Jose Manuel Vazquez Loma | — | (831) 254 6112 | Windows, patio, painters | Watsonville · Santa Cruz County | — | — |