| Island Windows & Doors | Island Windows & Doors | — | (808) 657-3790 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Isle Communities LLC | Isle Communities LLC | jeff@islecommunities.com | (808) 650-5682 | GC, remodel, ADU | Kaneohe · Honolulu County | — | — |
| It's Electric Hawaii | It's Electric Hawaii | jcorreia808@gmail.com | (808) 521-7117 | Electricians | Honolulu · Honolulu County | — | — |
| J & G Flooring LLC | J & G Flooring LLC | jonathan@jgflooring.com | (214) 597-7730 | Other | Honolulu · Honolulu County | — | — |
| J Construction LLC | J Construction LLC | — | (808) 781-1068 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| J Construction LLC | J Construction LLC | — | (949) 679-5800 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| J Soriano Construction INC | J Soriano Construction INC | jscinc808@gmail.com | (808) 864-2344 | GC, remodel, ADU | Aiea · Honolulu 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 | — | — |
| 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 | — | — |
| Jayar Construction INC | Jayar Construction INC | info@jayarconstruction.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Jd Painting & Decorating Inc. | Jd Painting & Decorating Inc. | — | (808) 841-7100 | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Jen Construction LLC | Jen Construction LLC | — | (808) 841-6407 | GC, remodel, ADU | Honolulu · Honolulu 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 | — | — |
| Jga Builders LLC | Jga Builders LLC | impallari@gmail.com | — | GC, remodel, ADU | Kapolei · Honolulu County | — | — |
| Johnstone Supply | Johnstone Supply | — | (808) 842-6000 | HVAC | Honolulu · Honolulu County | — | — |
| Joyace Roofing LLC | Joyace Roofing LLC | joyace002@gmail.com | (808) 671-3434 | Other roofers | Waipahu · Honolulu 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 | — | — |
| K Schenk Electric LLC | K Schenk Electric LLC | astigma@astigmatic.com | (808) 381-4454 | Electricians | Kaneohe · Honolulu County | — | — |
| K-1 Construction LLC | K-1 Construction LLC | — | (949) 679-5800 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Kaena Electric LLC | Kaena Electric LLC | krewm@kaenaelectric.com | (808) 429-3598 | Electricians | Kaneohe · Honolulu County | — | — |
| Kahala Pool & Spa | Kahala Pool & Spa | john@kahalapools.com | (808) 396-1900 | Pool | Honolulu · Honolulu County | — | — |
| Kailua Plumbing LLC | Kailua Plumbing LLC | info@kailuaplumbing.com | (808) 444-0910 | Other | Kailua · Honolulu County | — | — |
| Kalaeloa Desalco LLC | Kalaeloa Desalco LLC | — | (808) 272-4778 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Kapcity Construction INC | Kapcity Construction INC | keenan@kapcityconstruction.com | (808) 397-8102 | GC, remodel, ADU | Aiea · Honolulu County | — | — |
| Kawika's Painting INC | Kawika's Painting INC | oahuadmin@kawikaspainting.com | (808) 848-0003 | Other roofers | Honolulu · Honolulu County | — | — |
| Kazuo Saito | Kazuo Saito | ksaito.funabashi@gmail.com | — | Windows, patio, painters | Honolulu · Honolulu County | — | — |
| Kazuo's Pool & Spa Services LLC | Kazuo's Pool & Spa Services LLC | — | (808) 228-2717 | Pool | Honolulu · Honolulu County | — | — |
| Kcn Services - Security Camera Hawaii Honolulu Oahu | Kcn Services - Security Camera Hawaii Honolulu Oahu | — | (808) 589-0000 | Alarm and generators | Honolulu · Honolulu County | — | — |
| Ke Nui Construction LLC | Ke Nui Construction LLC | info@kenuiconstruction.com | — | GC, remodel, ADU | Aiea · Honolulu County | — | — |
| Kela Construction Inc. | Kela Construction Inc. | — | (808) 737-1971 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Kendall Landscape Services | Kendall Landscape Services | — | (808) 674-7608 | Tree | Honolulu · Honolulu County | — | — |
| Kilauea Home Inspections | Kilauea Home Inspections | — | (808) 841-4663 | Inspectors | Honolulu · Honolulu County | — | — |
| Kilauea Pest Control | Kilauea Pest Control | — | (808) 236-2847 | Pest, tile roofs | Kailua · Honolulu County | — | — |
| Kimoto Roofing LLC | Kimoto Roofing LLC | info@kimotoroofing.com | (808) 772-7728 | Other roofers | Honolulu · Honolulu County | — | — |