| Top's Roofing Co Ltd | Top's Roofing Co Ltd | — | (808) 244-9116 | Other roofers | Wailuku · Maui County | — | — |
| Torres Roofing LLC | Torres Roofing LLC | — | (808) 885-7222 | Other roofers | Waimea · Hawaii County | — | — |
| Total Development LLCProtected | Total Development LLC | total.dev.llc@gmail.com | (808) 300-8593 | Tile roofers | Kailua-Kona · Hawaii County | — | — |
| Trace Industries INC | Trace Industries INC | tracy@traceindustries-hi.com | — | GC, remodel, ADU | Kula · Maui County | — | — |
| Tradewind Hawaii | Tradewind Hawaii | — | (808) 329-2310 | Windows, patio, painters | Kailua-Kona · Kalawao County | — | — |
| Translogic Corp | Translogic Corp | service.healthcare.us@swisslog-healthcare.com | — | Other | Honolulu · Honolulu County | — | — |
| Tree Concepts Hawaii LLC | Tree Concepts Hawaii LLC | treeconceptshawaii@gmail.com | (808) 782-8981 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Tree Masters | Tree Masters | contact@hawaiitreemasters.com | (808) 783-1844 | Tree | Honolulu · Honolulu County | — | — |
| Tree Patrol Landscaping | Tree Patrol Landscaping | — | (808) 634-7028 | Tree | Kapaʻa · Kauai County | — | — |
| Tree.bulls LLC -Tree Services | Tree.bulls LLC -Tree Services | — | (808) 747-5405 | Tree | Waianae · Honolulu County | — | — |
| Treehaus Build LLC | Treehaus Build LLC | nate@treehausbuild.com | (808) 758-4218 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Treepro Hawaii INC | Treepro Hawaii INC | robertson@treeprohawaii.com | — | Tree | Honolulu · Honolulu County | — | — |
| Trees Of Hawaii Inc. | Trees Of Hawaii Inc. | treesofhawaiiinc@hawaii.rr.com | (808) 842-0474 | Tree | Kapolei · Honolulu County | — | — |
| Trees Of The Tropics | Trees Of The Tropics | — | (808) 988-3761 | Tree | Honolulu · Honolulu County | — | — |
| Treescape Hawaii LLC | Treescape Hawaii LLC | — | (808) 330-4414 | Tree | Ewa Beach · Honolulu County | — | — |
| Trio Construction LLC | Trio Construction LLC | — | (888) 694-6735 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Tropic Pool & Spa | Tropic Pool & Spa | — | (808) 822-7600 | Pool | Kapaʻa · Kauai County | — | — |
| Tropical Air Conditioning INC | Tropical Air Conditioning INC | — | (808) 883-8881 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Tropical Island Properties LLC | Tropical Island Properties LLC | — | (808) 553-3648 | Property managers | Kaunakakai · Kalawao County | — | — |
| Tropical J's INC | Tropical J's INC | — | (808) 848-0888 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Tropical Tree Care | Tropical Tree Care | — | (808) 322-4722 | Tree | Hawaii · Hawaii County | — | — |
| Tropical Tree Services | Tropical Tree Services | — | (808) 254-9692 | Tree | Honolulu · Honolulu County | — | — |
| Tropical Wholesale | Tropical Wholesale | — | (808) 263-1252 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Truth Excavation LLC | Truth Excavation LLC | accounting@truthexcavation.com | (808) 269-5416 | Other | Lahaina · Maui County | — | — |
| Tsp Roof Systems INC | Tsp Roof Systems INC | — | (949) 379-3221 | Other roofers | Haleiwa · Honolulu County | — | — |
| Tulba's Roofing INC | Tulba's Roofing INC | joni@tulbasroofing.com | (808) 888-0945 | Other roofers | Ewa Beach · Honolulu County | — | — |
| Ula Ula Electric LLC | Ula Ula Electric LLC | office@ulaulaelectric.com | (808) 318-1716 | Electricians | Lahaina · Maui County | — | — |
| Ultimate Electrical LLC | Ultimate Electrical LLC | — | (808) 896-1860 | Electricians | Kailua-Kona · Hawaii County | — | — |
| Ultimate Roofing INC | Ultimate Roofing INC | — | (808) 934-9505 | Other roofers | Hilo · Hawaii County | — | — |
| Uluniu Construction LLC | Uluniu Construction LLC | — | (205) 493-1920 | GC, remodel, ADU | Kailua · Honolulu County | — | — |
| Underground Construction Co INC | Underground Construction Co INC | — | (707) 746-8800 | GC, remodel, ADU | Kapolei · Honolulu County | — | — |
| United Construction Group Hawaii | United Construction Group Hawaii | — | (808) 450-6588 | GC, remodel, ADU | Kapolei · Honolulu County | — | — |
| United Steel LLC | United Steel LLC | sales@united-steel.com | — | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Unitek Insulation LLC | Unitek Insulation LLC | info@unitekhawaii.com | (808) 831-3076 | Windows, patio, painters | Pearl City · Honolulu County | — | — |
| Unlimited Construction Services Inc. | Unlimited Construction Services Inc. | — | (808) 241-1400 | GC, remodel, ADU | Lihue · Kauai County | — | — |
| Unrivaled INC | Unrivaled INC | info@unrivaled.com | — | Other | Lawai · Kauai County | — | — |
| Urgent Island Restoration | Urgent Island Restoration | — | (833) 547-7015 | Restoration | Honolulu · Honolulu County | — | — |
| Vacation Maui Rentals The Fairway Shops At Kaanapali | Vacation Maui Rentals The Fairway Shops At Kaanapali | — | (888) 264-0888 | Property managers | Lahaina · Maui County | — | — |
| Valencia Construction LLC | Valencia Construction LLC | gerson@valenciaconstruction.com | (206) 661-5702 | GC, remodel, ADU | Lahaina · Maui County | — | — |
| Valley Isle Builders INC | Valley Isle Builders INC | lars@valleyislebuilders.com | — | Electricians | Lahaina · Maui County | — | — |