| Integrated Electrical Systems Inc. | Integrated Electrical Systems Inc. | — | (808) 937-4013 | Electricians | Kailua-Kona · Hawaii County | — | — |
| Island Asphalt Maintenance INC | Island Asphalt Maintenance INC | jade@islandasphaltmaintenance.com | (808) 322-5672 | Other | Kailua Kona · Hawaii County | — | — |
| Island Beach Rentals LLC | Island Beach Rentals LLC | book@ibrhawaii.com | (800) 332-7081 | Property managers | Hawaii · Hawaii County | — | — |
| Island Contractors | Island Contractors | admin@islandcontractors.pro | (808) 900-7540 | GC, remodel, ADU | Kapolei · Hawaii County | — | — |
| Island Electrical Contracting | Island Electrical Contracting | — | (808) 388-1144 | Electricians | Waianae · Hawaii County | — | — |
| Island Home Builders Inc. | Island Home Builders Inc. | — | (808) 283-3467 | GC, remodel, ADU | Captain Cook · Hawaii County | — | — |
| Island Pool & Spa Supply | Island Pool & Spa Supply | — | (808) 326-1151 | Pool | Kailua-Kona · Hawaii County | — | — |
| Island Resort Property | Island Resort Property | — | (808) 329-7170 | Property managers | Kailua-Kona · Hawaii County | — | — |
| Island Tinting LLC | Island Tinting LLC | interested@domainmarket.com | (888) 694-6735 | Windows, patio, painters | Hilo · Hawaii County | — | — |
| Island Wide Concrete Pumping LLC | Island Wide Concrete Pumping LLC | islandwideconcretepumping@gmail.com | — | Other | Mountain View · Hawaii County | — | — |
| Islandwide Fencing INC | Islandwide Fencing INC | info@islandwidefencing.com | (808) 935-0800 | Windows, patio, painters | Hilo · Hawaii County | — | — |
| Iwamoto Electric LLC | Iwamoto Electric LLC | ross@iwamotoelectric.com | (808) 987-2233 | Electricians | Hilo · Hawaii County | — | — |
| J T Smith Construction LLC | J T Smith Construction LLC | info@jt-smith.com | (808) 981-0407 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Jack's Diving Locker | Jack's Diving Locker | dive@jacksdivinglocker.com | — | Other | Kailua Kona · Hawaii County | — | — |
| Jay's Custom Cabinets INC | Jay's Custom Cabinets INC | — | (808) 966-9420 | GC, remodel, ADU | Keaau · Hawaii County | — | — |
| Jb Rivera & Sons Roofing Co INC | Jb Rivera & Sons Roofing Co INC | — | (808) 325-1858 | Other roofers | Kailua-Kona · Hawaii County | — | — |
| Jenco Pacific INC | Jenco Pacific INC | derek@jencopacific.com | (808) 937-3704 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Jet Builders | Jet Builders | — | (808) 935-5874 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Jgr Llc. Hawaii Construction | Jgr Llc. Hawaii Construction | — | (808) 339-4164 | Restoration | Ocean View · Hawaii County | — | — |
| Johnson Construction Inc. | Johnson Construction Inc. | — | (808) 960-9429 | GC, remodel, ADU | Kailua-Kona · Hawaii County | — | — |
| Kai Pono Builders | Kai Pono Builders | — | (808) 885-8082 | Pool | Waimea · Hawaii County | — | — |
| Kai Vista Pools | Kai Vista Pools | — | (808) 494-2572 | Pool | Kailua-Kona · Hawaii County | — | — |
| Kama Kani Roofing Services Inc. | Kama Kani Roofing Services Inc. | — | (808) 313-2991 | Other roofers | Honokaa · Hawaii County | — | — |
| Kama'aina Custom Homes LLC | Kama'aina Custom Homes LLC | — | (808) 896-4864 | GC, remodel, ADU | Honokaa · Hawaii County | — | — |
| Kamaaina Landscaping | Kamaaina Landscaping | — | (808) 333-6807 | Tree | Kamuela · Hawaii County | — | — |
| Keith Chapman | Keith Chapman | keithgchapman@gmail.com | (765) 586-4431 | GC, remodel, ADU | Kailua Kona · Hawaii County | — | — |
| Kekahu Concrete LLC | Kekahu Concrete LLC | kekahuconcretellc@gmail.com | (808) 747-5138 | Other | Keaau · Hawaii County | — | — |
| Ken's Masonry INC | Ken's Masonry INC | astigma@astigmatic.com | (480) 915-8728 | Other | Kailua Kona · Hawaii County | — | — |
| Kina'ole Home Inspection Services L.l.c. | Kina'ole Home Inspection Services L.l.c. | — | (808) 769-0095 | Inspectors | Kailua-Kona · Hawaii County | — | — |
| Knutson & Associates | Knutson & Associates | — | (808) 329-1010 | Property managers | Kailua-Kona · Hawaii County | — | — |
| Kona Air Conditioning | Kona Air Conditioning | — | (808) 326-7700 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Kona Coast Pest Control | Kona Coast Pest Control | — | (808) 334-1900 | Pest, tile roofs | Kailua-Kona · Hawaii County | — | — |
| Kona Coast Property Management LLC | Kona Coast Property Management LLC | — | (808) 329-2140 | Property managers | Kailua-Kona · Hawaii County | — | — |
| Kona Electric LLC License #ct-38225 | Kona Electric LLC License #ct-38225 | — | (808) 989-5272 | Electricians | Kealakekua · Hawaii County | — | — |
| Kona Industries Inc. | Kona Industries Inc. | konaindustries@hawaiiantel.net | (808) 329-7789 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Kona Roofing Experts | Kona Roofing Experts | — | (808) 300-5564 | Other roofers | Kailua-Kona · Hawaii County | — | — |
| Kona Vacation Rentals | Kona Vacation Rentals | — | (808) 334-1199 | Property managers | Kailua-Kona · Hawaii County | — | — |
| Kupaa Electric LLC | Kupaa Electric LLC | — | (808) 756-5257 | Electricians | Kailua-Kona · Hawaii County | — | — |
| Lanaki Pest Control | Lanaki Pest Control | lanakipestcontrol@yahoo.com | (808) 640-7130 | Pest, tile roofs | Waikoloa Village · Hawaii County | — | — |
| Lava Roofing | Lava Roofing | contact@lavaroofing.com | (808) 793-6635 | Other roofers | Kona · Hawaii County | — | — |