| J Eddy Painting Inc. | J Eddy Painting Inc. | contact@sansoxygen.com | — | Windows, patio, painters | Wailuku · Maui County | — | — |
| J Soriano Construction INC | J Soriano Construction INC | jscinc808@gmail.com | (808) 864-2344 | GC, remodel, ADU | Aiea · Honolulu County | — | — |
| J T Smith Construction LLC | J T Smith Construction LLC | info@jt-smith.com | (808) 981-0407 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| J&s Mechanical INC | J&s Mechanical INC | — | (801) 553-9922 | Pool | Kapaa · Kauai County | — | — |
| J.m. Pacific Construction LLC | J.m. Pacific Construction LLC | — | (808) 246-1500 | Pool | Kapaʻa · Kauai County | — | — |
| Jack's Air Conditioning | Jack's Air Conditioning | — | (808) 862-6621 | HVAC | Kahului · Maui County | — | — |
| Jack's Diving Locker | Jack's Diving Locker | dive@jacksdivinglocker.com | — | Other | Kailua Kona · Hawaii County | — | — |
| Jacobsen Construction Company INC | Jacobsen Construction Company INC | mason.miller@struck.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jade Painting INC | Jade Painting INC | — | (808) 677-6500 | Windows, patio, painters | Waipahu · Honolulu County | — | — |
| Jade Painting INC | Jade Painting INC | — | (808) 677-5233 | Windows, patio, painters | Waipahu · Kalawao County | — | — |
| James Thomas Stone Ltd | James Thomas Stone Ltd | 808jts@gmail.com | (808) 371-2020 | Other | Honolulu · Honolulu County | — | — |
| Jas. W. Glover Ltd. | Jas. W. Glover Ltd. | — | (808) 591-8977 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jay's Custom Cabinets INC | Jay's Custom Cabinets INC | — | (808) 966-9420 | GC, remodel, ADU | Keaau · Hawaii County | — | — |
| Jayar Construction INC | Jayar Construction INC | info@jayarconstruction.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jb Rivera & Sons Roofing Co INC | Jb Rivera & Sons Roofing Co INC | — | (808) 325-1858 | Other roofers | Kailua-Kona · Hawaii County | — | — |
| Jd Painting & Decorating Inc. | Jd Painting & Decorating Inc. | — | (808) 841-7100 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Jd Painting & Decorating Inc. | Jd Painting & Decorating Inc. | — | (808) 242-9731 | Windows, patio, painters | Wailuku · Maui County | — | — |
| Jen Construction LLC | Jen Construction LLC | — | (808) 841-6407 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jenco Pacific INC | Jenco Pacific INC | derek@jencopacific.com | (808) 937-3704 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Jensen Drilling Company | Jensen Drilling Company | info@jensendrilling.com | (541) 541-3670 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jerzy TileProtected | Jerzy Tile | — | (808) 398-2230 | Tile roofers | Honolulu · Honolulu County | — | — |
| Jet Builders | Jet Builders | — | (808) 935-5874 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Jga Builders LLC | Jga Builders LLC | impallari@gmail.com | — | GC, remodel, ADU | Kapolei · Honolulu County | — | — |
| Jgr Llc. Hawaii Construction | Jgr Llc. Hawaii Construction | — | (808) 339-4164 | Restoration | Ocean View · Hawaii County | — | — |
| Jn Construction INC | Jn Construction INC | — | (949) 679-5800 | Other | Wailuku · Maui County | — | — |
| Johnson Construction Inc. | Johnson Construction Inc. | — | (808) 960-9429 | GC, remodel, ADU | Kailua-Kona · Hawaii County | — | — |
| Johnstone Supply | Johnstone Supply | — | (808) 842-6000 | HVAC | Honolulu · Honolulu County | — | — |
| Johnstone Supply | Johnstone Supply | — | (808) 893-0004 | HVAC | Kahului · Maui County | — | — |
| Jonathan Clay | Jonathan Clay | jonathan@jonathanclay.com | — | GC, remodel, ADU | Other County | — | — |
| Josh Blount Construction LLC | Josh Blount Construction LLC | josh@joshblountconstruction.com | — | GC, remodel, ADU | Hanalei · Kauai County | — | — |
| Joyace Roofing LLC | Joyace Roofing LLC | joyace002@gmail.com | (808) 671-3434 | Other roofers | Waipahu · Honolulu County | — | — |
| Jp's Tree Trimming Llc. | Jp's Tree Trimming Llc. | — | (808) 634-2704 | Tree | Kilauea · Kauai County | — | — |
| Jurassic Stoneworks LLC | Jurassic Stoneworks LLC | info@jurassicstoneworks.com | (808) 873-7742 | Other | Puunene · Maui County | — | — |
| Just Inspections | Just Inspections | — | (808) 343-2164 | Inspectors | Honolulu · Honolulu County | — | — |
| Justin Homes LLC | Justin Homes LLC | hello@justin-homes.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jv Construction LLC | Jv Construction LLC | — | (949) 679-5800 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jw Contracting LLC | Jw Contracting LLC | dave@lab6.com | (905) 666-1400 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jw Plumbing LLC | Jw Plumbing LLC | — | (949) 679-5800 | Other | Wailuku · Maui County | — | — |
| K & G Construction LLC | K & G Construction LLC | kyle@kgconstruction.com | (508) 326-3679 | GC, remodel, ADU | Kula · Maui County | — | — |
| K Schenk Electric LLC | K Schenk Electric LLC | astigma@astigmatic.com | (808) 381-4454 | Electricians | Kaneohe · Honolulu County | — | — |