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About us

Committed to Keeping Your Home Squeaky Clean

Northwest Cleaning and Maintenance (NWCM) is based in Issaquah, Washington, and was initially started by Merle and Jack Madeoy in 1988. With an emphasis on superior quality and consistency, the company has grown steadily over the years. Today NWCM provides janitorial and maintenance services to office buildings, office spaces, retail businesses, healthcare facilities, schools, churches, and houses. Many of those clients since the beginning. They continue to hire and train all employees personally. Some hired in the early 1990s, continue servicing clients today. By maintaining a regular job checking schedule to ensure quality, rigorous hiring, and training process they retain a loyal, trustworthy, and skilled workforce. By emphasizing consistent client communication NWCM has been able to maintain customer relationships for years and years.


Average employee

10 years

Average Client


Years in


Client hours saved
so far

Average Years of Employment

Average Years of Client relationship

Years in Business

Hours Saved for You

About the owner

Northwest Cleaning and Maintenance is a family-owned company  operated by Mark Madeoy. At the age of 14 Mark Madeoy started as one of the first employees and worked with NWCM through his school years. In 2002 Mark returned to NWCM to run operations. After ten years Jack and Merle retired and Mark continues to operate NWCM with the same family values started by his parents over 30 years ago. Mark is available by email for any questions, complaints, or feedback. You can contact Mark at

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