Armstrong Services is a full service building maintenance firm providing commercial cleaning services to a wide variety of clients in the Greater Seattle Area, King County, and Snohomish County. Our building cleaning and janitorial services include overnight and weekend office cleaning, day porters, window cleaning, pressure washing, carpet cleaning and more. Our growing list of happy customers include corporate offices, medical and dental offices, churches, and property management companies. Armstrong Services was founded in 1988 by as a small family run business with the vision of helping every account look its best. Since that time, the portfolio of services provided and accounts maintained has grown tremendously.