| Rosman Renovations LLC | CC-01 | 2019 | Active |
| Rot Busters LLC | CC-01 | 2026 | Active |
| Rowood Craft LLC | CC-01 | 2025 | Active |
| Royal Pro Flooring LLC | CC-01 | 2023 | Active |
| RPM Construction & Remodel LLC | CC-01 | 2025 | Active |
| RSN Flooring LLC | CC-01 | 2023 | Active |
| Rto Construction LLC | CC-01 | 2020 | Active |
| Ruimi Construction LLC | CC-01 | 2026 | Active |
| S & V Painting Inc | CC-01 | 2016 | Active |
| S A Carpentry LLC | CC-01 | 2018 | Active |
| S E L Construction LLC | CC-01 | 2024 | Active |
| S P Painting LLC | CC-01 | 2019 | Active |
| S&K Pro Painting LLC | CC-01 | 2021 | Active |
| S&S Fine Construction LLC | CC-01 | 2021 | Active |
| Saferoute Home Services LLC | CC-01 | 2024 | Active |
| Sage - Lacey 1 LLC | CC-01 | 2024 | Renew by Dec 17, 2026 |
| Sage Built LLC | CC-01 | 2021 | Active |
| Sage Homes Northwest LLC | CC-01 | 2007 | Active |
| Sage King Mountain LLC | CC-01 | 2026 | Active |
| Sagitario LLC | CC-01 | 2022 | Active |
| Sal's Landscaping LLC | CC-01 | 2022 | Renew by Dec 27, 2026 |
| Sam Pro Contractor LLC | CC-01 | 2024 | Active |
| Sam's Quality Const LLC | CC-01 | 2024 | Renew by Nov 8, 2026 |
| Scott Delap Construction Inc | CC-01 | 2003 | Active |
| Scott Larsen Construction LLC | CC-01 | 2002 | Active |
| Sea Pac Homes | CC-01 | 2015 | Active |
| Seacom Cabling Inc | CC-01 | 2024 | Active |
| Seahurst Electric Inc | CC-01 | 2009 | Active |
| Sealcoatexpress LLC | CC-01 | 2021 | Active |
| Seattle Dave's Flooring LLC | CC-01 | 2019 | Active |
| Seattle High Rise Solutions | CC-01 | 2026 | Active |
| Seattle King Roofing LLC | CC-01 | 2020 | Active |
| Seattle Landscape Design LLC | CC-01 | 2024 | Renew by Nov 12, 2026 |
| Seattle Skyline Siding LLC | CC-01 | 2026 | Active |
| Seattle Stone Specialties LLC | CC-01 | 2019 | Active |
| Sej Excavation LLC | CC-01 | 2026 | Active |
| Senior Services/Snohomish Cnty | CC-01 | 1976 | Active |
| Sergo Floors LLC | CC-01 | 2018 | Active |
| SF Flooring LLC | CC-01 | 2023 | Active |
| SGP Remodel LLC | CC-01 | 2018 | Active |
| SGP Remodeling LLC | CC-01 | 2023 | Active |
| Shores Construction Co LLC | CC-01 | 2019 | Active |
| SHS Construction | CC-01 | 2014 | Active |
| Sierra Crest Contracting LLC | CC-01 | 2026 | Active |
| Silva Santos LLC | CC-01 | 2023 | Active |
| Silvestr3 Granite LLC | CC-01 | 2019 | Active |
| SKN Works Radiant Heating | CC-01 | 2019 | Active |
| Sky Northwest Inc | CC-01 | 1996 | Active |
| Sky Valley Plumbing Inc | CC-01 | 1996 | Active |
| Slavic Construction LLC | CC-01 | 2021 | Active |
| Sliusar Civil Construction LLC | CC-01 | 2026 | Active |
| Smart Building Services LLC | CC-01 | 2015 | Active |
| Snohomish Basic Dev LLC | CC-01 | 2025 | Active |
| Solid Crew LLC | CC-01 | 2023 | Active |
| Solid Line Landscape LLC | CC-01 | 2022 | Active |
| Solid Path LLC | CC-01 | 2025 | Active |
| Solidbuild Handyman LLC | CC-01 | 2025 | Active |
| Solutionteam LLC | CC-01 | 2021 | Active |
| Som Prestige LLC | CC-01 | 2022 | Active |
| Somspartanshield LLC | CC-01 | 2025 | Active |
| Sorin's Janitorial LLC | CC-01 | 2025 | Active |
| Sosafe LLC | CC-01 | 2024 | Active |
| Soshko Construction LLC | CC-01 | 2024 | Active |
| Sound Construction F R O Inc | CC-01 | 2023 | Active |
| Sound Energy Services LLC | CC-01 | 2026 | Active |
| Sound Facilities Inc | CC-01 | 2023 | Active |
| Sound Granite Tile & Stone | CC-01 | 2026 | Active |
| Sound Hauling & Junk RMVL LLC | CC-01 | 2023 | Active |
| Sound Pro Restoration LLC | CC-01 | 2025 | Active |
| Sound Specialized Services Inc | CC-01 | 2012 | Active |
| Sounders Const Group LLC | CC-01 | 2025 | Active |
| Sovereign Structures | CC-01 | 2026 | Active |
| Space For You LLC | CC-01 | 2023 | Active |
| Space Gen Construction LLC | CC-01 | 2024 | Active |
| Spartan & Gonzay Lndscpng LLC | CC-01 | 2021 | Active |
| SPL Construction LLC | CC-01 | 2020 | Renew by Nov 13, 2026 |
| SPS Construction Inc | CC-01 | 2018 | Active |
| St. Joseph's Carpentry LLC | CC-01 | 2016 | Active |
| Stas Pro LLC | CC-01 | 2024 | Active |
| State Group LLC | CC-01 | 2019 | Active |
| State Of The Art Installtn Inc | CC-01 | 2005 | Active |
| Steadfast Performance Remd LLC | CC-01 | 2019 | Active |
| Stellar Contractors LLC | CC-01 | 2023 | Active |
| Stepman Construction LLC | CC-01 | 2025 | Active |
| STERLING Telecom & Const Inc | CC-01 | 2012 | Active |
| Stern Construction LLC | CC-01 | 2023 | Active |
| Steven Bartlow LLC | CC-01 | 2020 | Active |
| STR Prestige LLC | CC-01 | 2025 | Active |
| Straight Line Services LLC | CC-01 | 2019 | Active |
| Strong Line LLC | CC-01 | 2024 | Active |
| Struxa Ventures | CC-01 | 2026 | Active |
| Super Siding And Windows | CC-01 | 2020 | Active |
| Superior Fence/Rail Of GRTR | CC-01 | 2023 | Active |
| Superior Tile & Flooring LLC | CC-01 | 2025 | Active |
| Supreme Green Homes Dvlpmt LLC | CC-01 | 2020 | Active |
| Sustainable Builders LLC | CC-01 | 2026 | Active |
| SV Elite Services LLC | CC-01 | 2025 | Active |
| SVP Stoneline LLC | CC-01 | 2026 | Active |
| Swett Brothers Const LLC | CC-01 | 2022 | Active |
| Swift Contract General LLC | CC-01 | 2019 | Active |