| Coast Painting & Maintenance | Coast Painting & Maintenance | — | (310) 679 9000 | Windows, patio, painters | Seal Beach · Orange County | — | — |
| Coast Patio Covers | Coast Patio Covers | — | (714) 718 3730 | Other | Anaheim · Orange County | — | — |
| Coast Point Construction | Jeremy Matthew Henderson | info@coastpointconstruction.com | (949) 310 2938 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coast Pool INC | Alfredo Lopez | — | (714) 340 6069 | Pool | Santa Ana · Orange County | — | — |
| Coast Sheet Metal INC | Marna Lee Chambers | — | (949) 645 2224 | Other | Costa Mesa · Orange County | — | — |
| Coast Sign LLC | Corey Dangkhoa Vo | — | (714) 520 9144 | Other | Anaheim · Orange County | — | — |
| Coast Steel & Fabrication LLC | Tom Raymond Philippbar | — | (949) 463 7879 | Other | San Clemente · Orange County | — | — |
| Coast Tile And Stone Surfaces | Coast Tile And Stone Surfaces | — | (714) 309 3373 | Other | Fountain Valley · Orange County | — | — |
| Coast To Coast Electric | Joel Michael Galvan | — | (714) 710 6027 | Electricians | Anaheim · Orange County | — | — |
| Coastal Arbor Tree Service INC | Simon Glen Timms | coastalarbor@yahoo.com | (949) 392 3100 | Tree | San Juan Capistrano · Orange County | — | — |
| Coastal Bath Enclosures | Coastal Bath Enclosures | — | (714) 397 8252 | Other | Huntington Beach · Orange County | — | — |
| Coastal Blue Construction | Steven Michael Macdonough | eben@eyebytes.com | (949) 510 6784 | GC, remodel, ADU | Dana Point · Orange County | — | — |
| Coastal Builders | Douglas Edward Risk | — | (714) 234 9160 | GC, remodel, ADU | Santa Ana · Orange County | — | — |
| Coastal Canyon Builders | Coastal Canyon Builders | — | (714) 401 3559 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Coastal Casita INC | Maxfield Ray Brown | — | (626) 665 8591 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Coastal Comfort Heating And Cooling | Derrick Edwin Mosley | — | (949) 426 7010 | HVAC | San Juan Capistrano · Orange County | — | — |
| Coastal Community Construction | Haleblian Kev | — | (949) 423 6008 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Coastal Concrete Cutting | Ricky Dean Winters | — | (562) 449 6375 | Other | Orange · Orange County | — | — |
| Coastal Construction & Consulting INC | Charles Scott Bertolini | — | (714) 864 7003 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastal Construction And Maintenance | Nasser Bakhtiari Oskoui | — | (949) 558 4455 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| Coastal Construction LLC | David August Ii Bauer | — | (949) 402 6017 | Other roofers | Costa Mesa · Orange County | — | — |
| Coastal Contracting | Peter Maxum Bunge | — | (949) 433 8891 | Electricians | Irvine · Orange County | — | — |
| Coastal Current Electric Corp | Michael Boyd Griffin | estimates@coastalcurrentelectric.com | (949) 801-6009 | Electricians | San Juan Capistrano · Orange County | — | — |
| Coastal Custom Electric INC | David Lopez | — | (949) 735 1184 | Electricians | Huntington Beach · Orange County | — | — |
| Coastal Desert Air Conditioning And Heating | Brian Michael Ramirez | — | (747) 252 4441 | HVAC | Costa Mesa · Orange County | — | — |
| Coastal Design Construction INC | David Lawrence Seefeldt | contact@sansoxygen.com | (949) 237 0782 | GC, remodel, ADU | Laguna Hills · Orange County | — | — |
| Coastal Door Solutions | Christi Lynn Flanigan | — | (949) 916 4380 | Other | Irvine · Orange County | — | — |
| Coastal Elite Builder | Coastal Elite Builder | — | (949) 849 3083 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastal Estates & Development INC | Minhdai Margaret Le | — | (714) 955 1221 | GC, remodel, ADU | Fountain Valley · Orange County | — | — |
| Coastal Finish Carpentry | Coastal Finish Carpentry | — | (657) 786 3572 | Other | Placentia · Orange County | — | — |
| Coastal General Contractors | Gary Francis Jr Pirnat | — | (714) 365 3512 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Coastal Greenscapes | Peter Erwin Hofsaess | — | (714) 478 6663 | Windows, patio, painters | Anaheim · Orange County | — | — |
| Coastal Group LLC DBA Ton Construction Group | Peter That Ton | — | (310) 968 2605 | GC, remodel, ADU | Fullerton · Orange County | — | — |
| Coastal Gutter & Construction | Gunner Brock Nelson | — | (714) 823 7786 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastal Heating & Cooling INC | Alex Ray Gabler | — | (949) 482 2599 | HVAC | Mission Viejo · Orange County | — | — |
| Coastal Integration | Brett James Harris | — | (714) 392 1401 | Other | Huntington Beach · Orange County | — | — |
| Coastal Kitchen & Bath Remodeling INC | George Hewlett Ii Steinkamp | — | (999) 280 8050 | GC, remodel, ADU | Anaheim · Orange County | — | — |
| Coastal Kitchens And Baths INC | John Mark Bailey | — | (949) 583 1900 | GC, remodel, ADU | Lake Forest · Orange County | — | — |
| Coastal Lighting Services INC | Scott David Robitaille | — | (949) 285 9555 | Electricians | Mission Viejo · Orange County | — | — |
| Coastal Locksmith INC | Samuel Bryan Napier | — | (949) 232 7240 | Electricians | Irvine · Orange County | — | — |