| Cci Windows | Cci Windows | — | (808) 483-0100 | Windows, patio, painters | Aiea · Honolulu County | — | — |
| Cdg Maui INC | Cdg Maui INC | — | (808) 879-9181 | GC, remodel, ADU | Kihei · Maui County | — | — |
| Centimark Corporation | Centimark Corporation | — | (855) 483-1975 | Tile roofers | Honolulu · Honolulu County | — | — |
| Centra Systems Hawaii LLC | Centra Systems Hawaii LLC | info@centrasystemshawaii.com | (808) 877-4709 | Electricians | Wailuku · Maui County | — | — |
| Central Striping Service INC | Central Striping Service INC | — | (916) 635-5175 | Other | Keaau · Hawaii County | — | — |
| Certified Air Conditioning - Maui | Certified Air Conditioning - Maui | info@certifiedairmaui.com | (808) 727-2271 | HVAC | Kahului · Maui County | — | — |
| Certified Construction INC | Certified Construction INC | — | (212) 397-1945 | Other roofers | Honolulu · Honolulu County | — | — |
| Certified Electrical Services LLC | Certified Electrical Services LLC | interested@domainmarket.com | (888) 694-6735 | Electricians | Honolulu · Honolulu County | — | — |
| Certified Sounds LLC | Certified Sounds LLC | — | (808) 244-7900 | Alarm and generators | Wailuku · Maui County | — | — |
| Chaneybrooks | Chaneybrooks | contactus@chaneybrooks.com | (808) 544-1600 | Property managers | Honolulu · Honolulu County | — | — |
| Chemi-Pure Termite & Pest Control | Chemi-Pure Termite & Pest Control | — | (808) 847-2048 | Pest, tile roofs | Honolulu · Honolulu County | — | — |
| Cherry Pools LLC | Cherry Pools LLC | — | (808) 868-1476 | Pool | Kihei · Maui County | — | — |
| Choice Plumbing LLC | Choice Plumbing LLC | — | (888) 694-6735 | Other | Mililani · Honolulu County | — | — |
| Christensen Bros LLC | Christensen Bros LLC | interested@domainmarket.com | (888) 694-6735 | GC, remodel, ADU | Haleiwa · Honolulu County | — | — |
| Cjm Electric LLC | Cjm Electric LLC | cjm153@gmail.com | (908) 892-5804 | Electricians | Lihue · Kauai County | — | — |
| Ckm Electrical Services LLC | Ckm Electrical Services LLC | info@ckmelectricalservices.com | — | Electricians | Mililani · Honolulu County | — | — |
| Classic Island Homes INC | Classic Island Homes INC | classicislandhomes@gmail.com | (808) 652-0029 | GC, remodel, ADU | Kilauea · Kauai County | — | — |
| Clayco INC | Clayco INC | sclay@clayco.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Clear Solutions Hi | Clear Solutions Hi | bob@clearsolutionshi.com | (808) 937-9854 | Windows, patio, painters | Kailua-Kona · Hawaii County | — | — |
| Clearwater Pool & Spa | Clearwater Pool & Spa | — | (808) 322-9220 | Pool | Kailua-Kona · Hawaii County | — | — |
| Clem's Plumbing INC | Clem's Plumbing INC | — | (877) 339-0018 | Other | Kailua Kona · Hawaii County | — | — |
| Climbing Hi LLC | Climbing Hi LLC | — | (808) 269-5462 | Windows, patio, painters | Paia · Maui County | — | — |
| Close Construction INC | Close Construction INC | — | (808) 678-9493 | GC, remodel, ADU | Kapolei · Kalawao County | — | — |
| Clyde Souza Services Inc. | Clyde Souza Services Inc. | — | (808) 639-2356 | Other | Kalaheo · Kauai County | — | — |
| Cnc Electric LLC | Cnc Electric LLC | — | (400) 859-1988 | Electricians | Mililani · Honolulu County | — | — |
| Coastal Development INC | Coastal Development INC | coastaldevelopment@gmail.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Coastal Home Solutions | Coastal Home Solutions | charlesburton@hawaiicoastalsolutions.com | (808) 489-7324 | Inspectors | Kapolei · Honolulu County | — | — |
| Coastal View Construction | Coastal View Construction | eric@coastalviewconstructionllc.com | (808) 276-9626 | GC, remodel, ADU | Lahaina · Maui County | — | — |
| Coastal Windows INC | Coastal Windows INC | customercare@coastalwindows.com | (808) 676-0529 | GC, remodel, ADU | Waipahu · Honolulu County | — | — |
| Coconut Kuleana - Maui's Premier Spikeless Palm & Tree Trimming | Coconut Kuleana - Maui's Premier Spikeless Palm & Tree Trimming | — | (808) 344-5070 | Tree | Kula · Maui County | — | — |
| Coldtech 2010 LLC | Coldtech 2010 LLC | — | (856) 228-8145 | HVAC | Kekaha · Kauai County | — | — |
| Coldwell Banker Island Properties | Coldwell Banker Island Properties | information@visitcapebreton.com | (902) 563-4636 | Property managers | Honolulu · Honolulu County | — | — |
| Coldwell Banker Property Management | Coldwell Banker Property Management | — | (808) 329-5300 | Property managers | Kailua-Kona · Hawaii County | — | — |
| Commercial Electric INC | Commercial Electric INC | info@commercialelectric.com | (216) 241-2886 | Electricians | Honolulu · Honolulu County | — | — |
| Compass - Maui Property Team | Compass - Maui Property Team | — | (808) 217-8832 | Property managers | Kihei · Maui County | — | — |
| Complete Construction Services Corp | Complete Construction Services Corp | interested@domainmarket.com | (888) 694-6735 | GC, remodel, ADU | Kailua · Honolulu County | — | — |
| Concreate Oahu LLC | Concreate Oahu LLC | — | (808) 688-7248 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Concrete Pool & Spa Inc. | Concrete Pool & Spa Inc. | — | (808) 883-2777 | Pool | Waikoloa Village · Hawaii County | — | — |
| Construction Bros INC | Construction Bros INC | — | (888) 694-6735 | GC, remodel, ADU | Kahului · Maui County | — | — |
| Construction Development INC | Construction Development INC | interested@domainmarket.com | (888) 694-6735 | HVAC | Kahului · Maui County | — | — |