| Jems Construction LLC | CC-01 | 2026 | Active |
| Jennifer Randall & Assoc LLC | CC-01 | 2009 | Active |
| Jennifer Ryan Design LLC | CC-01 | 2024 | Active |
| Jensen Built | CC-01 | 2025 | Active |
| Jfa Enterprise LLC | CC-01 | 2026 | Active |
| Jfe Construction LLC | CC-01 | 2020 | Active |
| JK General Contracting Inc | CC-01 | 2014 | Active |
| JKGC Construction LLC | CC-01 | 2023 | Active |
| Jl2 Construction Inc | CC-01 | 2019 | Active |
| JM Structures Inc | CC-01 | 2005 | Active |
| John Huntley Inc | CC-01 | 2007 | Renew by Nov 20, 2026 |
| John The Arborist Tree Service | CC-01 | 2025 | Active |
| JPS Builders Inc | CC-01 | 2008 | Renew by Dec 18, 2026 |
| JRR Construction LLC | CC-01 | 2020 | Active |
| JS West Coast Construction LLC | CC-01 | 2021 | Active |
| JSN Flips | CC-01 | 2025 | Active |
| Julio's Landscaping LLC | CC-01 | 2021 | Active |
| Junkaway LLC | CC-01 | 2025 | Active |
| Just Fix It Const LLC | CC-01 | 2025 | Active |
| K I Karashchuk LLC | CC-01 | 2025 | Active |
| K2b LLC | CC-01 | 2012 | Active |
| Kaliber LLC | CC-01 | 2017 | Active |
| Karleby Builders Inc | CC-01 | 2016 | Active |
| Kazimer Construction Inc | CC-01 | 2025 | Active |
| Kday Creations LLC | CC-01 | 2022 | Active |
| Keith Doran Arborist Servs LLC | CC-01 | 2020 | Active |
| Kestrel & Sons LLC | CC-01 | 2026 | Active |
| Keystone Custom Homes LLC | CC-01 | 2021 | Active |
| KJR Construction LLC | CC-01 | 2024 | Active |
| Knock On Wood Handyman LLC | CC-01 | 2026 | Active |
| Konstrukt General Contrs Inc | CC-01 | 2026 | Active |
| Kota Construction Inc | CC-01 | 2004 | Active |
| Kramer Concrete Const Inc | CC-01 | 2015 | Active |
| Kso Construction LLC | CC-01 | 2023 | Active |
| Kulshan Painting LLC | CC-01 | 2017 | Active |
| Kyle Harris Remodeling LLC | CC-01 | 2017 | Active |
| Kyle's Home Repair LLC | CC-01 | 2018 | Active |
| Laika Construction LLC | CC-01 | 2021 | Active |
| Land Roofing LLC | CC-01 | 2008 | Active |
| Lander Quality Const LLC | CC-01 | 2021 | Active |
| Landmark Enterprises Inc | CC-01 | 1985 | Active |
| Landscape Pro Solutions LLC | CC-01 | 2019 | Active |
| Larry Brown Construction Inc | CC-01 | 1991 | Active |
| Larsen House Works Inc | CC-01 | 2022 | Renew by Nov 30, 2026 |
| Legacy Tree Care LLC | CC-01 | 2022 | Active |
| Lemolo Saunas | CC-01 | 2026 | Active |
| Leppala Plumbing LLC | CC-01 | 2020 | Active |
| Lett Design Build LLC | CC-01 | 2019 | Active |
| Lexd LLC | CC-01 | 2021 | Active |
| Lil' Scoop Bobcat Inc | CC-01 | 2005 | Active |
| Lindell Home Services LLC | CC-01 | 2021 | Active |
| Liquid Stone Surfaces LLC | CC-01 | 2022 | Active |
| Lis Construction Inc | CC-01 | 2018 | Active |
| Lj's Handyman Service Inc | CC-01 | 2014 | Active |
| Lockstep Construction LLC | CC-01 | 2026 | Active |
| Lookabill General Contrng Inc | CC-01 | 2010 | Active |
| Lupul Contracting LLC | CC-01 | 2008 | Active |
| Lux Design LTD | CC-01 | 2013 | Active |
| M & S Construction LLC | CC-01 | 2026 | Active |
| Madali's Exceptional Cling LLC | CC-01 | 2024 | Active |
| Madrona Construction | CC-01 | 2018 | Active |
| Madrone Builders LLC | CC-01 | 2025 | Active |
| Malwa Precision Const LLC | CC-01 | 2024 | Active |
| Maple Tree Construction Inc | CC-01 | 2004 | Active |
| Margaret's Window Cleaning Inc | CC-01 | 2013 | Active |
| Maria Rose Forsythe LLC | CC-01 | 2023 | Active |
| Marina Dock Parts LLC | CC-01 | 2022 | Renew by Dec 9, 2026 |
| Marion Company LLC | CC-01 | 2008 | Active |
| Mark Palmer General Contr llc | CC-01 | 2010 | Active |
| Mark Smith LLC | CC-01 | 2026 | Active |
| Marker Construction Inc | CC-01 | 2016 | Active |
| Marr's Heating & A/C Inc | CC-01 | 1993 | Active |
| Marroquin Construction LLC | CC-01 | 2022 | Renew by Dec 7, 2026 |
| Marvin S Construction LLC | CC-01 | 2026 | Active |
| Mason's House Works Inc | CC-01 | 2003 | Active |
| Master Roofing Gutt & SDNG LLC | CC-01 | 2019 | Active |
| McFarlane Construction Inc | CC-01 | 1999 | Active |
| Mia 8 Construction Inc | CC-01 | 2025 | Active |
| Misty Mountain Management LLC | CC-01 | 2026 | Active |
| Mivur LLC | CC-01 | 2018 | Active |
| MJD Construction LLC | CC-01 | 2020 | Active |
| MJVM Contracting LLC | CC-01 | 2024 | Active |
| Mobius Construction LLC | CC-01 | 2009 | Active |
| Moceri Construction Inc | CC-01 | 1984 | Active |
| Modified Construction LLC | CC-01 | 2019 | Active |
| Monarca Const & Rmdlng LLC | CC-01 | 2024 | Active |
| Monks Excavation LLC | CC-01 | 2007 | Active |
| Monsa Construction LLC | CC-01 | 2024 | Active |
| Montgomery Hardwood Flrng Inc | CC-01 | 1994 | Active |
| Mora Design And Const LLC | CC-01 | 2018 | Active |
| Motiv Premium Painting LLC | CC-01 | 2024 | Active |
| Mount Baker Tiny Homes | CC-01 | 2023 | Active |
| Mt Baker Handyman Service LLC | CC-01 | 2017 | Active |
| Mt Baker Roofing | CC-01 | 2022 | Active |
| Mt View Excavating Inc | CC-01 | 2000 | Active |
| Mumms LLC | CC-01 | 2013 | Active |
| Myer Construction LLC | CC-01 | 2019 | Active |
| Nautilus Contracting LLC | CC-01 | 2025 | Active |
| Navco Construction USA Inc | CC-01 | 2026 | Active |
| Near Construction LLC | CC-01 | 2026 | Active |