Business Details
37 Years
experience
Emergency
services
Trusted Commercial Cleaning Services in Knoxville, TN
Founded in 1989 by Gary Duncan, our company has built a 35-year legacy of delivering professional commercial cleaning services across East Tennessee and beyond. We prioritize relationships with clients and staff equally, operating with honesty, integrity, and a heart for service. Our team specializes in janitorial services, floor care, building maintenance, and upholstery cleaning, tailored to meet diverse facility needs. With certifications from the IICRC and membership in BSCAI, we combine advanced techniques with locally rooted expertise.Surviving and growing through the pandemic by adding disinfectant services, we continue to serve as Knoxville's trusted partner in cleanliness while expanding our reach to Salt Lake City. Our partnership with Clean Team enhances our capabilities, ensuring consistent, reliable service backed by ongoing employee training and community investment.
Services
Janitorial Services
Floor Care
Building Maintenance
Upholstery Cleaning
Post-Construction Cleaning
Carpet Care
VCT Stripping/Waxing
Tile & Grout Cleaning
Day Porter Services
Security Checks
Details
- Year established: 1989
Highlights and features
- 35-year proven track record serving East Tennessee businesses
- Locally owned with deep community ties and rapid response times
- 24/7 emergency cleaning and disinfectant services available
- IICRC-certified technicians for specialized floor and carpet care
- Strategic partnership with Clean Team for expanded service capabilities
Associations and certifications
- IICRC
- BSCAI
What people say
Amazing company
Great people
10/10 recommend
Hardworking
Very nice
Services
Janitorial Services
Our comprehensive janitorial services include daily cleaning, restroom sanitation, floor maintenance, and supply management for commercial facilities. We offer flexible scheduling from weekly visits to full-time day porters, ensuring customized solutions for corporate buildings, medical offices, and industrial facilities. Our trained staff uses eco-friendly products and follows strict protocols to maintain hygiene and safety standards.
Floor Care
Specializing in commercial floor maintenance, we offer carpet cleaning using truck-mounted steam extraction and dry encapsulation methods. Our services include VCT stripping/waxing, tile & grout cleaning with high-pressure extraction, and hardwood floor care. Certified technicians ensure proper cleaning techniques that extend flooring lifespan while improving indoor air quality through deep soil removal.
Building Maintenance
We provide preventive building maintenance including light bulb replacement, plumbing checks, electrical inspections, and seasonal de-icing services. Our team creates customized maintenance plans to prevent minor issues from escalating, allowing businesses to focus on operations while we handle facility upkeep through scheduled inspections and responsive repairs.
Upholstery Cleaning
Our professional upholstery cleaning services restore commercial furniture using fabric-specific solutions approved by manufacturers. We clean sofas, office chairs, and specialty fabrics like microfiber and wool, employing methods that remove allergens and bacteria while preserving material integrity. Regular cleanings improve appearance, extend furniture lifespan, and enhance indoor air quality.
Post-Construction Cleaning
We specialize in thorough post-construction cleanup for new commercial spaces, removing dust, debris, and construction residues. Our team handles window cleaning, floor polishing, and HVAC vent cleaning to prepare facilities for occupancy. This service ensures compliance with building standards and creates a welcoming environment for employees and customers.
People
Gary Duncan
Founder
Founded Duncan & Sons in 1989 with a commitment to service excellence. His vision created a people-centric company culture that values employees and clients equally while establishing community roots in Knoxville.
Sheri Henegar
President
Serving as President since 2015, Sheri focuses on employee satisfaction and client needs. She drives growth through strategic partnerships while maintaining the company's founding values of integrity and service.
Mark Woods
Operations Partner
Rising through the ranks since 2016, Mark specializes in problem-solving for complex maintenance issues. His hands-on approach ensures operational efficiency while balancing family time with personal woodworking projects.
Anne Freeman
Administrative Partner
With 18 years of service since 2005, Anne manages administrative operations with a focus on employee fulfillment. She balances work with travel and enjoying local cuisine while embracing her empty nest lifestyle.
Jesse Carpenter
Customer Care Manager
Leading customer relations since 2016, Jesse combines family life with 13 children and outdoor activities. He ensures client satisfaction through responsive communication and personalized service solutions.
Questions
What commercial cleaning services do you offer?
We provide janitorial services, floor care, building maintenance, upholstery cleaning, post-construction cleanup, and 24/7 emergency disinfectant services for businesses in Knoxville and beyond.
Are your technicians certified?
Yes, our carpet cleaning technicians are IICRC-certified, and we follow industry best practices for all cleaning methods and safety protocols.
Do you service medical facilities?
Yes, we offer specialized cleaning for medical facilities including disinfection protocols and compliance with healthcare environment standards.
How do you handle emergency cleaning needs?
Our 24/7 emergency services team responds promptly to urgent cleaning requirements, including pandemic-related disinfectant services and post-storm cleanup.
Can you accommodate customized cleaning schedules?
We tailor cleaning plans to client needs, offering hourly visits, daily maintenance, full-time day porters, and weekend/holiday services.
