| H2o Management Services Inc | CC-01 | 2023 | Active |
| Habitat for Humanity Mason Cty | CC-01 | 2008 | Renew by Dec 19, 2026 |
| Hagmann Contracting SRVS LLC | CC-01 | 2023 | Active |
| Hammersley Contracting LLC | CC-01 | 2024 | Active |
| Hanson Excavation LLC | CC-01 | 2015 | Active |
| HCC Remodeling LLC | CC-01 | 2024 | Renew by Nov 14, 2026 |
| Hearthwood Homes LLC | CC-01 | 2022 | Active |
| Heritage Contractor Servs LLC | CC-01 | 2022 | Active |
| High Timber Custom Homes LLC | CC-01 | 2026 | Active |
| Huntington Glass Co LLC | CC-01 | 2015 | Active |
| Ironguard Roofing LLC | CC-01 | 2026 | Active |
| Ishmm | CC-01 | 2025 | Active |
| J E Fry Inc | CC-01 | 2018 | Renew by Nov 19, 2026 |
| J X Construction LLC | CC-01 | 1998 | Active |
| Jareds Tree Service LLC | CC-01 | 2019 | Active |
| JBG Construction LLC | CC-01 | 2017 | Active |
| Jems Construction Services LLC | CC-01 | 2024 | Active |
| Jg's Landscaping & Const LLC | CC-01 | 2023 | Active |
| Jim Hunter Construction LLC | CC-01 | 2022 | Active |
| John Hoyt Construction LLC | CC-01 | 2019 | Active |
| Justice Logging & Exvtn LLC | CC-01 | 2026 | Active |
| K&A Siding LLC | CC-01 | 2021 | Active |
| K&M Services & Lawn Maint LLC | CC-01 | 2026 | Active |
| K&S Homes & Rmdlng LLC | CC-01 | 2018 | Active |
| Kaizen Construction LLC | CC-01 | 2015 | Active |
| Katz Eye Const & Design LLC | CC-01 | 2026 | Active |
| Kda Remolding & Const LLC | CC-01 | 2022 | Active |
| Keeping Awnaroll LLC | CC-01 | 2020 | Active |
| Lansing Brothers Const Corp | CC-01 | 2022 | Renew by Dec 5, 2026 |
| Layton's Cncte Cnstcn & Ex LLC | CC-01 | 2023 | Active |
| Lifetree Designs | CC-01 | 2026 | Active |
| Lion Stone Cnstrctn Srvcs LLC | CC-01 | 2023 | Active |
| LLC Generl Cntrng& Lndscpg LLC | CC-01 | 2024 | Active |
| Luciano's Drywall LLC | CC-01 | 2026 | Active |
| Luisiana Tree Service LLC | CC-01 | 2019 | Active |
| Manke Excavating LLC | CC-01 | 1999 | Active |
| Maples Excavating & Septic LLC | CC-01 | 2023 | Active |
| Martens Contracting LLC | CC-01 | 2019 | Active |
| Martin Bautista Lndscpg LLC | CC-01 | 2023 | Active |
| Martinez Roofing NW LLC | CC-01 | 2019 | Active |
| Marvinito Ldspg & Tree SRV LLC | CC-01 | 2025 | Active |
| Mason Cnty Tree & Land Ser LLC | CC-01 | 2022 | Active |
| Mason Energy | CC-01 | 2026 | Active |
| Master View Windows LLC | CC-01 | 2022 | Active |
| Matt B's Lawns | CC-01 | 2017 | Active |
| Michael's Custom Woodworks Inc | CC-01 | 2003 | Active |
| Miguel Pedro Landscaping LLC | CC-01 | 2025 | Active |
| Mike's Septic Services LLC | CC-01 | 2024 | Active |
| MK Custom Interiors LLC | CC-01 | 2026 | Active |
| Monnier Construction LLC | CC-01 | 2001 | Active |
| Montana Lanscaping LLC | CC-01 | 2023 | Active |
| Montejo Lndscpg & Tree SRV LLC | CC-01 | 2025 | Active |
| Mr Picky LLC | CC-01 | 2006 | Renew by Dec 13, 2026 |
| Mt General Contractor LLC | CC-01 | 2024 | Active |
| Nava Underground Const LLC | CC-01 | 2024 | Active |
| Nick's PNTG & Home Spclst LLC | CC-01 | 2024 | Active |
| Northwest Controls Contr LLC | CC-01 | 2014 | Active |
| Northwind Construction LLC | CC-01 | 2026 | Active |
| Oakland Bay Landscape Serv LLC | CC-01 | 2009 | Active |
| Olympia Tree Team LLC | CC-01 | 2016 | Active |
| Olympic Crest Property Servs | CC-01 | 2026 | Active |
| Olympic Heating & Cooling LLC | CC-01 | 2002 | Active |
| Olympic Mountain Contrng LLC | CC-01 | 2026 | Active |
| On Point Home Services LLC | CC-01 | 2026 | Active |
| Oscar's Gardening LLC | CC-01 | 2019 | Active |
| Outdoor Living Builders LLC | CC-01 | 2022 | Active |
| Pablo Landscape LLC | CC-01 | 2024 | Active |
| Pablo Services LLC | CC-01 | 2024 | Active |
| Pablo's Construction LLC | CC-01 | 2023 | Active |
| Pacific Tree Serv & Lndscp LLC | CC-01 | 2025 | Active |
| Pacific Turf & Timber LLC | CC-01 | 2026 | Active |
| Paineless Water Services LLC | CC-01 | 2024 | Active |
| Panther Landscaping LLC | CC-01 | 2020 | Active |
| Paul Bunyan Company LLC | CC-01 | 2024 | Active |
| Payment General Construct LLC | CC-01 | 2019 | Active |
| Paysse Properties LLC | CC-01 | 2024 | Active |
| Pinnacle Construction | CC-01 | 2025 | Active |
| PNW Treelancers LLP | CC-01 | 2020 | Active |
| Precision Envrnmntl Vactr SRVS | CC-01 | 2022 | Active |
| Proficient Excavation LLC | CC-01 | 2021 | Active |
| PWW Property Development LLC | CC-01 | 2023 | Active |
| Quality Interiors Gen Cont LLC | CC-01 | 2026 | Active |
| Rba Home Remodel Services LLC | CC-01 | 2026 | Active |
| Rca Landscaping Services LLC | CC-01 | 2024 | Active |
| RDS Construction Wa LLC | CC-01 | 2026 | Active |
| Reysea LLC | CC-01 | 2021 | Active |
| Rhinoscape LLC | CC-01 | 2026 | Active |
| Ridgeview Excavation Sltns LLC | CC-01 | 2025 | Active |
| Roger's Restorations LLC | CC-01 | 2026 | Active |
| Samuel Jacob Construction LLC | CC-01 | 2023 | Active |
| Schoening Excavating LLC | CC-01 | 2020 | Renew by Nov 17, 2026 |
| Schuler Ground Works LLC | CC-01 | 2026 | Active |
| Selby Plumbing & Mechncl LLC | CC-01 | 2026 | Active |
| Semanko Services LLC | CC-01 | 2024 | Active |
| Shane's Handyman Services | CC-01 | 2016 | Active |
| Shaun Hawley Construction LLC | CC-01 | 2018 | Active |
| Shedpros | CC-01 | 2026 | Active |
| Shelton Floor Covering Inc | CC-01 | 2004 | Active |
| Shelton Glass | CC-01 | 2009 | Active |
| Shield Roofing & Const LLC | CC-01 | 2017 | Renew by Nov 2, 2026 |