| Servpro Of Kauai | Servpro Of Kauai | — | (808) 727-1890 | Restoration | Kauai · Kauai County | — | — |
| Shamrock Tree Service INC | Shamrock Tree Service INC | — | (860) 533-1141 | Windows, patio, painters | Honaunau · Hawaii County | — | — |
| Shell Recharge Charging Station | Shell Recharge Charging Station | — | (888) 264-2208 | EV chargers | Honolulu · Honolulu County | — | — |
| Shoreline Plumbing LLC | Shoreline Plumbing LLC | — | (361) 992-0700 | Other | Honolulu · Honolulu County | — | — |
| Si Construction LLC | Si Construction LLC | info@si-construction.com | — | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Signature Inspections Hawai’i LLC | Signature Inspections Hawai’i LLC | info@signatureinspectionshawaii.com | (808) 388-3425 | Inspectors | Kailua · Maui County | — | — |
| Signs Hawaii LLC | Signs Hawaii LLC | info@signshawaii.com | (808) 841-2224 | Other | Honolulu · Honolulu County | — | — |
| Silliman Construction INC | Silliman Construction INC | info@sillimanconstruction.com | (808) 333-9085 | GC, remodel, ADU | Kapaa · Kauai County | — | — |
| Simplisafe | Simplisafe | customer-support@simplisafe.co.uk | — | Alarm and generators | Kauai · Kauai County | — | — |
| Skn Construction INC | Skn Construction INC | info@sknconstruction.com | (869) 760-1266 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Skyblue Pool Service & Repair | Skyblue Pool Service & Repair | — | (808) 208-4233 | Pool | Honolulu · Honolulu County | — | — |
| Slope Solutions Hawaii LLC | Slope Solutions Hawaii LLC | brian@slopesolutionshawaii.com | — | Other | Kapaa · Kauai County | — | — |
| Smart Pest Prevention | Smart Pest Prevention | — | (808) 887-6278 | Pest, tile roofs | Kailua-Kona · Hawaii County | — | — |
| Smith Brothers Construction | Smith Brothers Construction | — | (858) 350-1445 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Smith Builders LLC | Smith Builders LLC | info@smithbuildersmaui.com | — | GC, remodel, ADU | Kahului · Maui County | — | — |
| Smith's Electrical Contracting LLC | Smith's Electrical Contracting LLC | workrequest@smithselectricalcontracting.com | (808) 645-6458 | Electricians | Kapaa · Kauai County | — | — |
| Society Contracting LLC | Society Contracting LLC | — | (808) 455-8157 | Other roofers | Pearl City · Honolulu County | — | — |
| Solid Built Construction INC | Solid Built Construction INC | — | (602) 888-3394 | GC, remodel, ADU | Honolulu · Honolulu County | — | — |
| Solid Rock Contracting INC | Solid Rock Contracting INC | interested@domainmarket.com | (888) 694-6735 | GC, remodel, ADU | Kailua Kona · Hawaii County | — | — |
| South Kohala Management | South Kohala Management | — | (808) 883-8500 | Property managers | Waimea · Hawaii County | — | — |
| South Pacific Plumbing LLC | South Pacific Plumbing LLC | sopacplumbing@msn.com | (808) 870-0190 | Other | Paia · Maui County | — | — |
| South Shore Air Conditioning LLC | South Shore Air Conditioning LLC | info@southshoreairconditioning.com | — | HVAC | Kahului · Maui County | — | — |
| Space Kitchen & Bath LLC Kaloko Business Center BayProtected | Space Kitchen & Bath LLC Kaloko Business Center Bay | — | (808) 597-0515 | Tile roofers | Kailua-Kona · Hawaii County | — | — |
| Space Options INC | Space Options INC | jeantessmer@spaceoptions.com | (808) 878-8386 | Electricians | Hoolehua · Maui County | — | — |
| Sparky & Sons LLC | Sparky & Sons LLC | sparkyandsons808@gmail.com | (808) 342-8195 | EV chargers | Honolulu · Honolulu County | — | — |
| Sparky Electric | Sparky Electric | — | (808) 268-4107 | Electricians | Makawao · Maui County | — | — |
| Specialized Builders LLC | Specialized Builders LLC | interested@domainmarket.com | (888) 694-6735 | GC, remodel, ADU | Kailua · Honolulu County | — | — |
| Splash Superpools Of Hawaii | Splash Superpools Of Hawaii | — | (808) 327-6657 | Pool | Kailua-Kona · Hawaii County | — | — |
| Spruce Electric LLC | Spruce Electric LLC | brian@spruceelectric.com | — | Electricians | Lahaina · Maui County | — | — |
| Srs Building ProductsProtected | Srs Building Products | ryan.boyer@srsbuildingproducts.com | (808) 378-4446 | Tile roofers | Kapaʻa · Kauai County | — | — |
| Ss Customs Car Stereo Store | Ss Customs Car Stereo Store | — | (808) 639-0545 | Alarm and generators | Lihue · Kauai County | — | — |
| Standard Air LLC | Standard Air LLC | — | (808) 302-0644 | HVAC | Kailua · Honolulu County | — | — |
| Standard Drywall INC | Standard Drywall INC | sandiego@standarddrywall.com | — | GC, remodel, ADU | Other County | — | — |
| Stark Construction INC | Stark Construction INC | proteam@mopro.com | — | GC, remodel, ADU | Hana · Maui County | — | — |
| Stephen J Parker | Stephen J Parker | info@stephenjparker.com | — | GC, remodel, ADU | Kailua-Kona · Hawaii County | — | — |
| Steve’s Plumbing & A/c Service | Steve’s Plumbing & A/c Service | — | (808) 736-1493 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Steve’s Plumbing & A/c Service | Steve’s Plumbing & A/c Service | — | (808) 374-5957 | HVAC | Kahului · Maui County | — | — |
| Steve’s Plumbing & A/c Service | Steve’s Plumbing & A/c Service | — | (808) 774-3038 | HVAC | Aiea · Honolulu County | — | — |
| Steve’s Plumbing & AC Service | Steve’s Plumbing & AC Service | — | (808) 400-6323 | HVAC | Lihue · Kauai County | — | — |
| Stiller Construction INC | Stiller Construction INC | bill@stillerconstruction.com | — | GC, remodel, ADU | Kihei · Maui County | — | — |