| Clearwater Pool And Spa - Service And Repair | Rodney David Boggs | — | (831) 588 3006 | Pool | Felton · Santa Cruz County | — | — |
| Clever Thoughts Construction | Phil Earl Ackley | — | (831) 713 7421 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Closet Magician S C | Closet Magician S C | — | (831) 566 0511 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Closet Magician Silicon Valley | Closet Magician Silicon Valley | sue@closetmagiciansiliconvalley.com | (831) 256 7387 | Other | Santa Cruz · Santa Cruz County | — | — |
| Cloverleaf Plumbing | Cloverleaf Plumbing | — | (831) 435 6689 | Other | Capitola · Santa Cruz County | — | — |
| Cmb Construction | Christopher Matthew Baron | — | (831) 431 7193 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Coast Concrete INC | John West Cureton | john@coastconcrete.com | (831) 476 5275 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Coast Construction Services | Brad Norton Peck | — | (408) 893 1121 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Coast Installation | Coast Installation | — | (831) 566 0048 | Other | Capitola · Santa Cruz County | — | — |
| Coast Line Carpentry | Coast Line Carpentry | — | (831) 704 7368 | Other | Santa Cruz · Santa Cruz County | — | — |
| Coast Lock And Safe | John Wesley Cameron | — | (831) 423 5397 | Other | Santa Cruz · Santa Cruz County | — | — |
| Coast Mountain Craftsman | Coast Mountain Craftsman | — | (831) 325 1679 | GC, remodel, ADU | Soquel · Santa Cruz County | — | — |
| Coast2coast Fireplace Service | Juan Daniel Morales Aguirre | — | (831) 274 0187 | Other | Watsonville · Santa Cruz County | — | — |
| Coastal Concepts | Coastal Concepts | — | (808) 652 4033 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Coastal Evergreen Company INC | William Regan Barry | — | (831) 438 4747 | Windows, patio, painters | Scotts Valley · Santa Cruz County | — | — |
| Coastal Landscaping INC | Melinda Lea Powers | — | (831) 334 7202 | Windows, patio, painters | Aptos · Santa Cruz County | — | — |
| Coastline Builders | Michael Casey Kahle | — | (831) 226 9206 | GC, remodel, ADU | Boulder Creek · Santa Cruz County | — | — |
| Coastline Construction | James Thomas Harnett | — | (831) 335 0950 | GC, remodel, ADU | Felton · Santa Cruz County | — | — |
| Coastline Construction LLC | Matthew Allan Maclaughlin | — | (831) 212 3146 | GC, remodel, ADU | Capitola · Santa Cruz County | — | — |
| Coastline Electric INC | Christopher Patrick Neill | — | (713) 680-9345 | Electricians | Felton · Santa Cruz County | — | — |
| Coastline Mechanical | Marcus James Burns | — | (831) 331 0859 | HVAC | Freedom · Santa Cruz County | — | — |
| Coastline Tractor And Ground Works INC | Richard Paul Candau | — | (831) 761 1440 | Other | Watsonville · Santa Cruz County | — | — |
| Coastwide Environmental Technologies INC | Adam Stewart Peterson | — | (831) 761 5511 | GC, remodel, ADU | Watsonville · Santa Cruz County | — | — |
| Coffey Fire Protection INC | Kevin Michael Coffey | — | (831) 724 1376 | Other | Watsonville · Santa Cruz County | — | — |
| Cogliati Tile | Cogliati Tile | — | (831) 588 0333 | Other | Santa Cruz · Santa Cruz County | — | — |
| Cohabitat Custom Building Contractors | Edward Valentine Schuhl | — | (831) 915 4881 | GC, remodel, ADU | Aptos · Santa Cruz County | — | — |
| Colbert Construction Company | David Reginald Colbert | — | (831) 359 6484 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Colimotes Technology | Colimotes Technology | — | (831) 840 3009 | Other | Watsonville · Santa Cruz County | — | — |
| Collins Coastal Plumbing INC | Adam Zane Barnes Collins | — | (831) 239 2870 | Other | Ben Lomond · Santa Cruz County | — | — |
| Colorwave Painting Company | Mark Brian Fuss | info@colorwave.co.za | (408) 348 5094 | Windows, patio, painters | Scotts Valley · Santa Cruz County | — | — |
| Comfort Mechanical Service INC | Ortiz Rodolfo Fernandez | — | (831) 900 8973 | HVAC | Watsonville · Santa Cruz County | — | — |
| Comfortrise HVAC Services | Comfortrise HVAC Services | — | (831) 888-0026 | HVAC | Santa Cruz · Santa Cruz County | — | — |
| Commercial Construction | Todd Anthony Clayton | — | (831) 254 2460 | GC, remodel, ADU | Scotts Valley · Santa Cruz County | — | — |
| Commons & Burt Builders INC A Ca Corporation | Owen Burt Commons | — | (831) 464 1073 | GC, remodel, ADU | Santa Cruz · Santa Cruz County | — | — |
| Communication Service Co | Tobias | — | (831) 476 9294 | Other | Santa Cruz · Santa Cruz County | — | — |
| Community Green Builders INC | Reuben David Feldthouse | — | (831) 334 8491 | Electricians | Watsonville · Santa Cruz County | — | — |
| Community Plumbing | Community Plumbing | — | (831) 840 8169 | Other | Watsonville · Santa Cruz County | — | — |
| Confluence Restoration INC | Ryan Walker Yarbrough | doug@confluencerestoration.com | (831) 621 8084 | Windows, patio, painters | Santa Cruz · Santa Cruz County | — | — |
| Conley Construction | Geoffrey Bieth Conley | freddyconley247@gmail.com | (831) 429 8111 | Other | Santa Cruz · Santa Cruz County | — | — |
| Connected Electric | Robert Sean Moore | — | (831) 201 9774 | Electricians | Davenport · Santa Cruz County | — | — |