| 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 | — | — |
| Blueprint (big Island) | Blueprint (big Island) | — | (808) 895-4540 | Alarm and generators | Kailua-Kona · Hawaii County | — | — |
| Bolton INC | Bolton INC | — | (605) 319-7606 | GC, remodel, ADU | Kailua-Kona · Hawaii County | — | — |
| Boom Hawaii Builders LLC | Boom Hawaii Builders LLC | — | (808) 960-4110 | GC, remodel, ADU | Hilo · Hawaii County | — | — |
| Botelho INC | Botelho INC | firstname@botelho.com | — | Other | Kailua · Honolulu County | — | — |
| Bowman Termite & Pest Management | Bowman Termite & Pest Management | — | (808) 935-8510 | Pest, tile roofs | Hilo · Hawaii County | — | — |
| Bowman Termite & Pest Management LLC | Bowman Termite & Pest Management LLC | — | (808) 244-0296 | Pest, tile roofs | Wailuku · Maui County | — | — |
| Bp Builders INC | Bp Builders INC | — | (949) 679-5800 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Breen Builders LLC | Breen Builders LLC | david@breenbuilders.com | (702) 271-2439 | GC, remodel, ADU | Kahului · Maui County | — | — |
| Brightview Landscapes LLC | Brightview Landscapes LLC | anthony.cellucci@brightview.com | — | Windows, patio, painters | Other County | — | — |
| Brilliant Space LLC | Brilliant Space LLC | info@brilliantspace.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Brown Painting Inc. | Brown Painting Inc. | — | (808) 271-5706 | Windows, patio, painters | Kailua-Kona · Hawaii County | — | — |
| Browning Chapman LLC | Browning Chapman LLC | — | (317) 608-2775 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Buck Roofing Co INC | Buck Roofing Co INC | — | (808) 775-7496 | Other roofers | Honokaa · Hawaii County | — | — |
| Budget Blinds Of The Big Island & Kauai | Budget Blinds Of The Big Island & Kauai | bigisland@budgetblinds.com | (808) 201-6644 | Windows, patio, painters | Kailua-Kona · Hawaii County | — | — |
| Burrell Painting Co | Burrell Painting Co | — | (808) 639-1988 | Windows, patio, painters | Kapaʻa · Kauai County | — | — |
| Byro Builders INC | Byro Builders INC | info@byrobuilders.com | (808) 344-3278 | GC, remodel, ADU | Kula · Maui County | — | — |
| C & C Construction INC | C & C Construction INC | — | (949) 679-5800 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| C & J Contracting INC | C & J Contracting INC | — | (808) 261-3508 | Pool | Kailua · Kalawao County | — | — |
| C & S Construction Inc. | C & S Construction Inc. | — | (541) 617-9190 | Other roofers | Hilo · Hawaii County | — | — |
| C&b Quality Painting | C&b Quality Painting | clint@cbqpainting.com | (808) 625-9411 | Windows, patio, painters | Mililani · Kalawao County | — | — |
| C-Thru Window Tinting | C-Thru Window Tinting | — | (808) 326-5488 | Windows, patio, painters | Kailua-Kona · Hawaii County | — | — |
| C3 Construction Corporation | C3 Construction Corporation | — | (949) 679-5800 | GC, remodel, ADU | Kapolei · Honolulu County | — | — |
| C4 Masonry And Pools | C4 Masonry And Pools | — | (808) 371-5924 | Pool | Keaau · Hawaii County | — | — |
| Caffey INC | Caffey INC | firstname@caffey.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Cajudoy Construction LLC | Cajudoy Construction LLC | — | (808) 276-3013 | GC, remodel, ADU | Wailuku · Maui County | — | — |
| California Frameless Shower Door LLC | California Frameless Shower Door LLC | californiaframeless@gmail.com | (808) 868-6868 | Windows, patio, painters | Wailuku · Maui County | — | — |
| Calvin's Air Conditioning & Refrigeration | Calvin's Air Conditioning & Refrigeration | — | (808) 371-0074 | HVAC | Aiea · Kalawao County | — | — |
| Cam Security INC | Cam Security INC | — | (808) 732-8748 | Alarm and generators | Honolulu · Honolulu County | — | — |
| Campos Concrete Pool & Spa | Campos Concrete Pool & Spa | — | (808) 280-8989 | Pool | Kihei · Maui County | — | — |
| Can Can Builders INC | Can Can Builders INC | — | (808) 250-1872 | GC, remodel, ADU | Makawao · Maui County | — | — |
| Can-Am Coatings INC | Can-Am Coatings INC | — | (619) 937-0430 | Other | Aiea · Honolulu County | — | — |
| Canencia Painting | Canencia Painting | — | (808) 470-5747 | Windows, patio, painters | Ewa Beach · Honolulu County | — | — |
| Carrico Construction LLC | Carrico Construction LLC | — | (877) 259-1106 | GC, remodel, ADU | Koloa · Kauai County | — | — |
| Castaway Construction & Restoration Llc. | Castaway Construction & Restoration Llc. | — | (808) 419-6650 | Restoration | Kahului · Maui County | — | — |
| Cat Electrix | Cat Electrix | — | (808) 635-1850 | Electricians | Kapaʻa · Kauai County | — | — |
| Cb Air Conditioning And Mechanical LLC | Cb Air Conditioning And Mechanical LLC | admin@cbacmechanical.com | — | HVAC | Mountain View · Hawaii County | — | — |
| Cbs Electric INC | Cbs Electric INC | — | (808) 488-2822 | Electricians | Honolulu · Honolulu County | — | — |
| Ccf Maui Construction INC | Ccf Maui Construction INC | — | (808) 280-4934 | GC, remodel, ADU | Wailuku · Maui County | — | — |