We’re dedicated to the delivery of superior service to your business – anywhere coast to coast. The Marsden companies are responsible for over 300 million square feet every day. We clean, climatize, calibrate, and protect your important assets. We’re different because our operating companies are deeply entrenched in their local communities, allowing us to self-perform an astonishing 97% of all our business. While we enjoy the efficiencies of a national company, we allow our operators to make decisions and build relationships in the communities where they work and live. National Scope. Local Dedication. Click on your region below to see our complete line of partners and services.