| Spruce Box Construction Inc | RGC + LBPR | 2017 | Active |
| SQFT Studios LLC | RGC | 2016 | Active |
| Square Deal Remodeling Co Inc | RGC + LBPR | 2011 | Active |
| SSK Construction LLC | RGC | 2023 | Active |
| St Concrete LLC | RGC | 2019 | Active |
| Stan Anderson Builders LLC | RGC | 2003 | Active |
| Stan Construction LLC | RGC | 2022 | Active |
| Star Painting & Services LLC | RGC | 2025 | Active |
| Star Roofing LLC | RGC | 2020 | Active |
| Star Strata LLC | RGC | 2019 | Active |
| Stars & Bars Handyman Service LLC | RGC | 2024 | Active |
| Steadfast Carpentry & Contracting LLC | RGC | 2026 | Active |
| Steadfast Contracting LLC | RGC | 2026 | Active |
| Steadfast Home Repairs LLC | RGC | 2022 | Active |
| Stecher Custom Renovations LLC | RGC | 2023 | Active |
| Steelab LLC | CGC2 | 2007 | Active |
| Steele Painting LLC | RGC | 2022 | Active |
| Steelhead Marine Inc | RGC | 1989 | Active |
| Steenslid And Company | RGC + CSC2 | 1996 | Active |
| Steiner Remodel LLC | RGC | 2010 | Active |
| Stelzer Painting Inc | RGC | 2014 | Active |
| Stepan Chapskiy LLC | RGC | 2021 | Active |
| Sterling Steel Company | RGC | 2010 | Active |
| Steven Chesnek Construction Inc | RGC | 2005 | Active |
| Steven Edgren Carpentry LLC | RGC | 2008 | Active |
| Steven Zaglen Stone Mason LLC | RGC | 2020 | Active |
| Stiles Custom Builds LLC | RGC | 2026 | Active |
| Stillwater Leveling Inc | RGC | 2024 | Active |
| Stone & Tile Professionals LLC | RGC | 2024 | Active |
| Stone Castle Construction LLC | CGC2, RGC | 2007 | Active |
| Stone Center Inc | CGC2, RGC | 1987 | Active |
| Stoneman Masonry LLC | RGC | 2015 | Active |
| Storie Barriers Corp | CGC1 | 2016 | Active |
| Straight Arrow Construction & Home Inspections LLC | RGC | 2018 | Active |
| Straight Edge Design PDX LLC | RGC | 2023 | Active |
| Strata Home Enhancement LLC | RGC | 2023 | Active |
| Straw Hat And Son LLC | RGC | 2026 | Active |
| Streamline LLC | RGC | 2026 | Active |
| Streimer Sheet Metal Works Inc | CGC1, RGC | 1972 | Active |
| Striver Roofing LLC | RGC | 2023 | Active |
| Structon LLC | CGC2 | 2025 | Active |
| Structura Contracting LLC | RGC | 2025 | Active |
| Structure Build LLC | RGC | 2017 | Active |
| Structure PDX Inc | RGC | 2017 | Active |
| Struttura LLC | RGC | 2026 | Active |
| Stud Support LLC | RGC | 2026 | Active |
| Stumptown Builders LLC | RGC | 2024 | Renew by Dec 5, 2026 |
| Stumptown Carpentry LLC | RGC | 2016 | Active |
| Stumptown Investments LLC | RGC | 2017 | Active |
| Sub Zero Construction LLC | CGC1 | 2023 | Active |
| Suess Enterprises Inc | RGC | 2004 | Active |
| Suh & Son Mechanical LLC | CGC2, RGC | 2010 | Renew by Dec 8, 2026 |
| Summit Blue Collar Construction Services LLC | CGC2, RGC | 2026 | Active |
| Summit Concepts And Remodeling LLC | RGC | 2025 | Active |
| Summit Industries Inc | CGC2 | 1990 | Active |
| Summit Mechanical LLC | RGC | 2018 | Active |
| Summit Wood Creations LLC | CGC2, RGC | 2016 | Active |
| Sun Camp Custom Building LLC | RGC | 2023 | Active |
| Sunbreak Energy Advisors LLC | RGC + CSC2 | 2022 | Active |
| Suncatcher Windows LLC | CGC2, RGC + LBPR | 2020 | Active |
| Suncrest Roofing LLC | RGC | 2023 | Active |
| Sunday Pro Custom Painting LLC | RGC | 2026 | Active |
| Sundling And Associates LLC | RGC | 2025 | Active |
| Sunflower Remodeling LLC | RGC | 2023 | Active |
| Sunno Construction LLC | RGC | 2017 | Active |
| Sunrise Contractors Inc | RGC + LBPR | 2024 | Active |
| Sunrise Excavation LLC | RGC | 2022 | Active |
| Sunrise Painting And More LLC | RGC | 2018 | Active |
| Sunset Construction LLC | RGC | 2023 | Active |
| Sunset Heating Cooling & Plumbing LLC | CGC1, RGC | 2022 | Active |
| Sunstone Homes Inc | RGC | 1995 | Active |
| Super Robertson Solutions LLC | RGC | 2021 | Active |
| Superior Clean LLC | RGC | 2015 | Active |
| Superior Fence And Construction Inc | CGC2, RGC | 1990 | Active |
| Superior Surfaces Inc | CGC2, RGC | 2024 | Active |
| Superior Underground LLC | CGC2, RGC | 2018 | Active |
| Supernova Design Company LLC | RGC | 2016 | Active |
| Superwerk Design LLC | RGC | 2024 | Active |
| Supreme Construction Services LLC | RGC | 2025 | Active |
| Supreme Remodeling LLC | RGC | 2022 | Active |
| Sure Shot Contractors LLC | RGC | 2026 | Active |
| Surebuild LLC | RGC + LBPR | 2024 | Renew by Dec 11, 2026 |
| Surface Works LLC | CGC2, RGC | 2004 | Active |
| Sutherland Builders LLC | RGC + LBPR | 2026 | Active |
| Sutherland Plumbing LLC | RGC | 2013 | Active |
| Swanson Construction LLC | RGC | 2026 | Active |
| Sweetheart Carpentry & Design LLC | RGC + LBPR | 2014 | Active |
| Swift Hand Maintenance LLC | RGC | 2022 | Renew by Dec 9, 2026 |
| Sylvan Remodelers LLC | RGC | 2021 | Renew by Nov 27, 2026 |
| Sylvanus Home Solutions LLC | RGC | 2018 | Active |
| Synergy Home Services Inc | RGC | 2025 | Active |
| Synergy Homeworks LLC | RGC | 2015 | Active |
| Sypher Construction LLC | RGC | 2020 | Active |
| SZ Enterprises LLC | RGC + LBPR | 2022 | Active |
| T & G Contractors LLC | RGC + LBPR | 2022 | Active |
| T & M Home Refresh LLC | RGC | 2023 | Active |
| T&Z Roofing LLC | RGC | 2025 | Active |
| Tabor Carpentry LLC | RGC | 2025 | Active |
| Tabor Northwest Contracting LLC | RGC + LBPR | 2017 | Active |
| Tall Firs Building Co | CGC2, RGC | 2012 | Active |