| Coastal Luxe Install LLC | Brandon Joseph Gaidano | brandon@coastalluxeinstall.com | (949) 275 1803 | GC, remodel, ADU | Orange · Orange County | — | — |
| Coastal Maintenance Co INC | David Lawrence Walker | — | (714) 279 9898 | Windows, patio, painters | Mission Viejo · Orange County | — | — |
| Coastal Mouldings INC | Suzanne Denise Snapper | — | (949) 606 6671 | GC, remodel, ADU | San Juan Capistrano · Orange County | — | — |
| Coastal Oasis Construction INC | Forrester Brian Knapp | sales@coastaloasisconstruction.com | (714) 366 9240 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastal Outdoor Services LLC | Amrin Michael Anastasi | — | (714) 916 2992 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastal Pacific Construction INC | Gary Frank Mason | jmason@coastalpacificconstruction.com | (949) 770 1555 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Coastal Property Inspections | Coastal Property Inspections | coastalpropertyinspect@gmail.com | (949) 396-9595 | Inspectors | Laguna Niguel · Orange County | — | — |
| Coastal Quality Construction INC | Jeffrey Ryan Wood | — | (818) 679 2696 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coastal Rain Gutters | Coastal Rain Gutters | — | (714) 625 5452 | Other | Huntington Beach · Orange County | — | — |
| Coastal Roofing Company INC | Andrew David Witham | — | (714) 842 2830 | Other roofers | Costa Mesa · Orange County | — | — |
| Coastal Roots INC | Joshua Bo Bateson | — | (949) 381 9226 | Windows, patio, painters | Laguna Niguel · Orange County | — | — |
| Coastal Security Systems | Coastal Security Systems | — | (714) 395-5700 | Alarm and generators | Anaheim · Orange County | — | — |
| Coastal Service Group INC | Chad Blain Anderson | — | (818) 606 4526 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coastal Tile Concepts | Coastal Tile Concepts | — | (949) 306 9209 | Other | Yorba Linda · Orange County | — | — |
| Coastal Transplant Landscaping | Coastal Transplant Landscaping | — | (949) 973 0285 | Windows, patio, painters | Laguna Niguel · Orange County | — | — |
| Coastal Underground | Joseph Anthony Marquez | — | (714) 290 1656 | Other | Orange · Orange County | — | — |
| Coastal View Glass & Mirror LLC | John Perry Gould | — | (657) 210 4642 | Windows, patio, painters | Santa Ana · Orange County | — | — |
| Coastal West Construction LLC | Nicholas Anthony Soresi | — | (714) 585 3485 | GC, remodel, ADU | Capistrano Beach · Orange County | — | — |
| Coastal Woodworks INC | Jason Christopher Garcia | service@coastalwoodworks.com | (949) 295 0228 | GC, remodel, ADU | Laguna Niguel · Orange County | — | — |
| Coastland Concrete Construction LLC | Lisette Guzman | — | (714) 448 7456 | Other | Garden Grove · Orange County | — | — |
| Coastline Builder | Coastline Builder | — | (949) 280 7440 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coastline Builders | Coastline Builders | — | (949) 887 0829 | GC, remodel, ADU | San Juan Capistrano · Orange County | — | — |
| Coastline Comfort Systems | Coastline Comfort Systems | — | (949) 357 6319 | HVAC | Rancho Santa Margarita · Orange County | — | — |
| Coastline Construction | James Chase Joseph | — | (562) 781 1545 | GC, remodel, ADU | La Habra · Orange County | — | — |
| Coastline Construction | Popa Costel | — | (714) 470 7072 | GC, remodel, ADU | Aliso Viejo · Orange County | — | — |
| Coastline Construction | Robert Beardsley Nairn | — | (602) 369 4099 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coastline Construction & Awning Co INC | John Werner Almquist | — | (714) 891 9798 | GC, remodel, ADU | Huntington Beach · Orange County | — | — |
| Coastline Construction By Ross INC | Ross Van Johnson | — | (360) 957 1478 | GC, remodel, ADU | San Clemente · Orange County | — | — |
| Coastline Construction Oc INC | Eric Ortan | — | (949) 390 4807 | GC, remodel, ADU | Tustin · Orange County | — | — |
| Coastline Design & Construction INC | Ziad Akram Boukai | — | (949) 701 4960 | GC, remodel, ADU | Irvine · Orange County | — | — |
| Coastline Development INC | Todd Warren Layman | general@coastlinedevelopment.com | (714) 265 0250 | GC, remodel, ADU | Garden Grove · Orange County | — | — |
| Coastline Electric | Richard Thomas Holcombe | — | (713) 680-9345 | Electricians | San Clemente · Orange County | — | — |
| Coastline Electric Co | Steven John Guarnaccia | — | (713) 680-9345 | Electricians | Huntington Beach · Orange County | — | — |
| Coastline Garage Doors | Coastline Garage Doors | — | (877) 573 6968 | Other | Fountain Valley · Orange County | — | — |
| Coastline Harmony Builders INC | Rafael Dzhabrailov | — | (747) 377 9555 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Coastline Home Pros INC | Todd Christopher Moore | — | (469) 878 3066 | Other | San Clemente · Orange County | — | — |
| Coastline Pavers | Karen Renee Klosterman | — | (714) 914 1160 | Other | Fullerton · Orange County | — | — |
| Coastline Plumbing | Daniel Alexander Vargas | — | (949) 370 5236 | Other | Orange · Orange County | — | — |
| Coastline Plumbing Solutions | Popa Costel | — | (714) 470 7072 | GC, remodel, ADU | Orange · Orange County | — | — |
| Coastline Pools | Kristy Marie Bird | — | (949) 554 9429 | Pool | Costa Mesa · Orange County | — | — |