Specialties
National Building Service, Inc. is a commercial cleaning service based in Knoxville, Tennessee since 1985. We specialize in professional and reliable janitorial cleaning for your business and industrial buildings, whether it's an office, school, church, or a recreational park. We offer 24/7 emergency service for our regular customers, carpet and floor cleaning, strip and floor waxing, construction clean-ups, daily cleaning, and much more. Give us a call or visit our office today for more information.