| Rozen Home Builders Inc | B | 2018 | Active |
| RP Building | B | 2025 | Active |
| RP General Construction Services Inc | B | 2023 | Active |
| Ruan Construction | B | 2015 | Active |
| Rusberg Enterprises Inc | B | 2019 | Active |
| RVC General Construction Inc | B | 2024 | Active |
| Ry & Company Coastal Builders | B | 2025 | Active |
| Ryan's Garage Doors | B + D28 | 2026 | Active |
| Rym Pro Builder Inc | B | 2024 | Renew by Nov 30, 2026 |
| S & S Construction | B | 1997 | Active |
| S & T Pro Construction & Design Inc | B | 2019 | Active |
| S + B James Construction / Gilbane Building Company | B | 2024 | Active |
| S C General Contracting Inc | B | 2019 | Active |
| S N F Construction | A, B | 2023 | Active |
| S+b James Construction California Inc | B | 2018 | Renew by Dec 31, 2026 |
| Sac Infill Construction Inc | B | 2017 | Active |
| Sacramento Construction Design Inc | B | 2026 | Active |
| Sacramento Edge Construction Inc | B + C10 | 2023 | Active |
| Sacramento Engineers & Contractors Inc | A | 2025 | Active |
| Sacramento Oak Crest Company Inc | B | 1992 | Active |
| Sactown Construction Pros | B + C10, C15 | 2019 | Active |
| Safety-Kleen Systems Inc | A + HAZ | 2006 | Active |
| Sal RC Construction Inc | B | 2022 | Active |
| SBM Builder | A, B + C27 | 2024 | Active |
| Schetter Electric Inc | B + C7, C10 | 1966 | Active |
| Schetter Electric LLC | B + C7, C10 | 2019 | Active |
| SD Constructors LLC | B | 2026 | Active |
| Sdi Services | A | 1999 | Active |
| Sebe's Home Remodeling Services | B2 | 2025 | Active |
| Sepco Builders Inc | B | 2023 | Active |
| Seraphic Construction Inc | B | 2025 | Active |
| Servpro Of Citrus Heights/Roseville & Carmichael | B | 2010 | Active |
| Servpro Of North Sacramento | B | 2026 | Active |
| Servpro Of SE Sacramento | B | 2023 | Active |
| Shannon Mottes Construction | B + C33 | 1988 | Active |
| She Can 2 Inc | B | 2007 | Active |
| Siding Windows | B + C10, C17, C36 | 2011 | Active |
| Sierra Bella Homes Inc | B | 2025 | Active |
| Sierra Gold Construction Inc | B + C6, C17 | 2011 | Active |
| Sierra Mills Company | A, B | 1999 | Active |
| Sierra Peak Construction | B | 2024 | Active |
| Sierra Single Ply Inc | B + C39 | 1993 | Active |
| Sierra Striping Inc | A + C32, D42 | 1992 | Active |
| Sigma Construction | B | 2026 | Active |
| Silke Communications Solutions Inc | A | 2019 | Active |
| Silverstone Construction Inc | B | 2018 | Active |
| Sisler & Sisler Construction Inc | B + C8 | 1991 | Active |
| Skypoint Development | B | 2026 | Active |
| Slaten Construction Inc | B | 2023 | Active |
| Sleekhaus Inc | B | 2023 | Active |
| SLR Creation & Construction Inc | B | 2022 | Active |
| Slurry Engineering Inc | A | 2005 | Active |
| Smart Undergroud | A | 2016 | Renew by Dec 31, 2026 |
| Solid Construction & Design Inc | B | 2012 | Active |
| Solis Craft Builders Corp | B | 2023 | Active |
| Soto Construction Services | B | 2024 | Active |
| Southgate Glass & Screen Inc | B + C17, D28, D52 +1 | 1988 | Active |
| Spanda Industrial Development Inc | B | 1962 | Active |
| Spectrum Services Group Inc | A, B + C10, C31, HAZ | 2009 | Active |
| Spinella Thomas B Construction | A | 1975 | Active |
| SPV Construction Inc | B | 2026 | Active |
| Star Construction | B + C15 | 1979 | Renew by Nov 30, 2026 |
| Star Energy Inc | B + C17, C20 | 2010 | Active |
| State Pro Inc | B | 2019 | Active |
| Statewide General Renovations Inc | B + C33 | 2018 | Active |
| Stellar Outdoor Living | B | 2017 | Active |
| Steve's Innovative Construction | B | 1990 | Active |
| Stor | B | 2024 | Active |
| Stronghold Foundation Repair LLC | A, B | 2025 | Active |
| Studz Construction Co | B | 2025 | Active |
| Sturgeon Construction Inc | A, B | 1972 | Active |
| Sullivan Security Communications Inc | B + C7, C10, C31 | 2021 | Active |
| Summit Building Group LLC | B + C33, C39, D12 | 2024 | Active |
| Sun Communications Inc | A + C7, C31 | 2017 | Active |
| Sun Worx | B + C53 | 2024 | Renew by Nov 30, 2026 |
| Sunday Heating And Air | B + C20 | 2021 | Active |
| Sunseri Associates Inc | A, B + C8, C23 | 1993 | Active |
| Sunwave Construction Inc | B | 2025 | Active |
| Super V Pro | B + C36, C54 | 2010 | Active |
| Superior On-Site Solutions | B + C42 | 2005 | Active |
| Surepods LLC | B | 2020 | Active |
| Synergy Construction And Designs | B | 2024 | Active |
| T And R Carpentry Inc | B + C6 | 1987 | Active |
| T D I USA Inc | B | 2018 | Active |
| T D P Construction Services Inc | B + ASB, C9 | 1992 | Renew by Dec 31, 2026 |
| T I M Construction Inc | B | 2019 | Active |
| T P N Construction Inc | B | 2025 | Active |
| T Q Construction Services Inc | B | 2002 | Active |
| T W Construction A Partnership | B | 2017 | Active |
| T&S Residential Remodeling Inc | B2 | 2024 | Active |
| Tacron Corp | B | 2025 | Active |
| Takehara Landscape Inc | A + C27 | 1973 | Active |
| Talini Inc | A + C27 | 1975 | Active |
| Tarin Construction Inc | B | 2026 | Active |
| TCD Contractors | B | 2025 | Active |
| TCS | B | 2026 | Active |
| Teeple Enterprises Inc | B + C10 | 2008 | Active |
| Teichert / MCM A Joint Venture | A | 2011 | Active |
| Teichert / Stacy And Witbeck J V | A | 2018 | Renew by Nov 30, 2026 |
| Teichert Aggregates | A | 1989 | Active |