| 8 Pacific Mason LLC | 8 Pacific Mason LLC | cs@pacificmason.com | (929) 741-0509 | Other | Kapaa · Kauai County | — | — |
| Ace Auto Glass - Kauaʻi | Ace Auto Glass - Kauaʻi | — | (808) 245-8084 | Windows, patio, painters | Lihue · Kauai County | — | — |
| Action Electric INC | Action Electric INC | — | (414) 940-6717 | Electricians | Kapaa · Kauai County | — | — |
| Activated Builders LLC | Activated Builders LLC | puanani@activatedbuilders.com | (808) 720-0770 | GC, remodel, ADU | Kalaheo · Kauai County | — | — |
| Admor HVAC Products Inc. - Kauai | Admor HVAC Products Inc. - Kauai | — | (808) 632-2665 | HVAC | Lihue · Kauai County | — | — |
| Advanced Electrical Solutions | Advanced Electrical Solutions | — | (808) 652-6106 | Electricians | Kapaʻa · Kauai County | — | — |
| Air Kauai | Air Kauai | — | (808) 246-4666 | Alarm and generators | Lihue · Kauai County | — | — |
| Alert Alarm Of Hawaii | Alert Alarm Of Hawaii | — | (808) 245-4243 | Alarm and generators | Lihue · Kauai County | — | — |
| Ali'i Windows | Ali'i Windows | — | (808) 652-8198 | Windows, patio, painters | Kilauea · Kauai County | — | — |
| Aloha Images Gallery | Aloha Images Gallery | — | (808) 631-8026 | Windows, patio, painters | Lihue · Kauai County | — | — |
| Aloha Pest Solutions | Aloha Pest Solutions | info@servicewithaloha.com | — | Pest, tile roofs | Lihue · Kauai County | — | — |
| Aloha Termite Kauai Inc. | Aloha Termite Kauai Inc. | — | (808) 245-3100 | Pest, tile roofs | Lihue · Kauai County | — | — |
| Aloha Window Care | Aloha Window Care | — | (808) 346-5115 | Windows, patio, painters | Kapaʻa · Kauai County | — | — |
| Aqua Engineers INC | Aqua Engineers INC | information@aquaengineers.com | (808) 332-7381 | Other | Kalaheo · Kauai County | — | — |
| Arcadia Painting INC | Arcadia Painting INC | arcadiapainting@msn.com | (808) 635-1349 | Windows, patio, painters | Koloa · Kauai County | — | — |
| Artistic Builders Corporation | Artistic Builders Corporation | eassistant@artistic-builders.com | (208) 970-4002 | GC, remodel, ADU | Koloa · Kauai County | — | — |
| Barto Construction Company INC | Barto Construction Company INC | bradbarto@yahoo.com | — | GC, remodel, ADU | Kapaa · Kauai County | — | — |
| Bei Hawaii | Bei Hawaii | — | (808) 241-7333 | Pest, tile roofs | Lihue · Kauai County | — | — |
| Blue Jade Real Estate Tina Funk Real Estate Broker Rb-22932 | Blue Jade Real Estate Tina Funk Real Estate Broker Rb-22932 | — | (808) 688-6855 | Property managers | Lihue · Kauai County | — | — |
| Blue Knight Services Hawaii INC | Blue Knight Services Hawaii INC | — | (808) 822-5665 | Alarm and generators | Kapaʻa · Kauai County | — | — |
| Blue Sky Electric | Blue Sky Electric | info@blueskyelectric.net | (808) 647-0599 | Electricians | Kapaʻa · Kauai County | — | — |
| Blue Tile Roof HouseProtected | Blue Tile Roof House | — | (808) 652-8101 | Tile roofers | Kapaʻa · Kauai County | — | — |
| Burrell Painting Co | Burrell Painting Co | — | (808) 639-1988 | Windows, patio, painters | Kapaʻa · Kauai County | — | — |
| Carrico Construction LLC | Carrico Construction LLC | — | (877) 259-1106 | GC, remodel, ADU | Koloa · Kauai County | — | — |
| Cat Electrix | Cat Electrix | — | (808) 635-1850 | Electricians | Kapaʻa · Kauai County | — | — |
| Cjm Electric LLC | Cjm Electric LLC | cjm153@gmail.com | (908) 892-5804 | Electricians | Lihue · Kauai County | — | — |
| Classic Island Homes INC | Classic Island Homes INC | classicislandhomes@gmail.com | (808) 652-0029 | GC, remodel, ADU | Kilauea · Kauai County | — | — |
| Clyde Souza Services Inc. | Clyde Souza Services Inc. | — | (808) 639-2356 | Other | Kalaheo · Kauai County | — | — |
| Coldtech 2010 LLC | Coldtech 2010 LLC | — | (856) 228-8145 | HVAC | Kekaha · Kauai County | — | — |
| Cosco Air Conditioning & Refrigeration | Cosco Air Conditioning & Refrigeration | — | (808) 632-2153 | HVAC | Lihue · Kauai County | — | — |
| Cr Ramos Electric | Cr Ramos Electric | — | (808) 822-9020 | Electricians | Kapaʻa · Kauai County | — | — |
| Curtis Law Construction | Curtis Law Construction | — | (808) 246-0676 | Other roofers | Lihue · Kauai County | — | — |
| Cushnie Construction Company INC | Cushnie Construction Company INC | — | (808) 332-9000 | GC, remodel, ADU | Kalaheo · Kauai County | — | — |
| Custom Cooling Inc. | Custom Cooling Inc. | service@customcoolingkauai.com | (808) 635-4112 | HVAC | Lihue · Kauai County | — | — |
| Da Kine Handyman LLC | Da Kine Handyman LLC | info@dakinehandyman.com | (808) 634-5409 | GC, remodel, ADU | Kalaheo · Kauai County | — | — |
| Da Pool Guy LLC | Da Pool Guy LLC | — | (808) 652-5669 | Pool | Kauai · Kauai County | — | — |
| Diamond Plumbing Co INC | Diamond Plumbing Co INC | interested@domainmarket.com | (888) 694-6735 | Other | Kapaa · Kauai County | — | — |
| Dt Construction LLC | Dt Construction LLC | — | (918) 527-0117 | GC, remodel, ADU | Princeville · Kauai County | — | — |
| Dynamix Electronics Refrigeration & Air Conditioning | Dynamix Electronics Refrigeration & Air Conditioning | — | (808) 635-5356 | HVAC | Lihue · Kauai County | — | — |
| Earthworks Pacific INC | Earthworks Pacific INC | — | (808) 246-8808 | GC, remodel, ADU | Lihue · Kauai County | — | — |