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Your Trusted Partner for Janitorial Services in Detroit, MI
Founded over 50 years ago, Giant Janitorial has built a legacy of excellence in janitorial services through dedication to quality, innovation, and client satisfaction. Our journey began as a small family venture and has grown into one of Michigan's most trusted cleaning service providers, serving over four million square feet nightly. With a focus on personalized service, we combine rigorous employee training programs with hands-on managerial oversight to ensure every client receives consistent, superior results. Our team of 100 trained professionals delivers comprehensive solutions including carpet cleaning, floor maintenance, construction cleanup, and customized maintenance packages tailored to each facility's unique needs. Backed by $10 million bonding capacity and a commitment to continuous improvement, we maintain direct client communication and on-site supervision to uphold our standards.

Recognized as one of Michigan's oldest Women Business Enterprises, we take pride in our ability to transform spaces while maintaining competitive pricing. Our 24/7 operational readiness and flexible service models ensure we meet evolving client demands across commercial properties of all sizes. From routine maintenance to specialized cleaning projects, our expertise extends beyond basic janitorial work to include pressure washing, event services, and supply management solutions. With decades of experience and a proven track record, we remain dedicated to making every space sparkle while eliminating cleaning-related concerns for our clients.
Services
Carpet Cleaning Window & Glass Cleaning Floor Maintenance Outdoor Maintenance Painting Services Construction Cleanup Pressure Washing Supply Management Event Services Flood Cleanup
Highlights and features
  • We have over 50 years of experience in commercial janitorial services
  • Our team provides customized cleaning solutions tailored to your facility's needs
  • We offer bonding capacities up to $10 million for client security
  • Our proprietary training programs ensure consistent service quality across all job sites
  • Direct owner involvement guarantees personalized attention to every client
Services
Carpet Cleaning
Our professional carpet cleaning service utilizes advanced equipment and eco-friendly solutions to deep-clean commercial carpets. Trained technicians remove embedded dirt, stains, and allergens while preserving carpet longevity. This service includes pre-treatment, hot water extraction, and post-cleaning inspection to maintain pristine conditions in office spaces, retail locations, and hospitality venues.
Floor Maintenance
We provide comprehensive floor maintenance for all hard surface types including stripping, waxing, buffing, and polishing. Our technicians use commercial-grade equipment to restore shine and protect flooring investments. Regular maintenance schedules prevent premature wear while maintaining safe, slip-resistant surfaces in high-traffic commercial environments.
Construction Cleanup
Our specialized construction cleanup service removes debris, dust, and residue from renovation or new construction projects. Teams perform multi-stage cleaning including window cleaning, surface sanitization, and final detailing to prepare spaces for occupancy. We handle both interior and exterior cleanup requirements for residential and commercial developments.
Pressure Washing
Professional pressure washing services remove dirt, grime, and contaminants from building exteriors, sidewalks, and parking areas. Our equipment delivers precise cleaning without surface damage, enhancing property appearance while maintaining safety standards for commercial facilities across Michigan.
Event Services
We provide dedicated event cleaning services for conferences, exhibitions, and special functions. Our staff ensures venues remain clean throughout events with restroom monitoring, trash management, and touchpoint sanitization. Post-event deep cleaning restores spaces to original conditions efficiently and discreetly.
People
Laura Huthwaite
CEO
Laura Huthwaite founded Giant Janitorial over 50 years ago and continues to lead with hands-on management. Her commitment to quality and employee development has grown the company into Michigan's premier janitorial service provider while maintaining personalized client relationships.
Pete Huthwaite
President
As President, Pete Huthwaite oversees daily operations alongside Laura. With decades of experience in facility management, he ensures service delivery excellence through direct job site supervision and implementation of rigorous quality control standards across all client locations.
Questions
What janitorial services does Giant Janitorial offer?
We provide comprehensive services including carpet cleaning, floor maintenance, pressure washing, construction cleanup, outdoor maintenance, and customized cleaning packages for commercial facilities across Michigan.
How does Giant Janitorial ensure service quality?
Our quality assurance combines rigorous employee training programs with direct owner supervision and regular client communication to maintain consistent service standards across all job sites.
What bonding capacity does Giant Janitorial provide?
We offer bonding capacities up to $10 million to provide clients with financial security and peace of mind for large-scale cleaning contracts.
Can services be customized for specific facilities?
Yes, we create tailored cleaning solutions based on each facility's size, industry requirements, and specific maintenance needs with flexible service scheduling options.
What areas do you service?
We operate throughout the state of Michigan, serving commercial clients in Detroit and surrounding metropolitan areas with reliable janitorial services.
How can I get a free estimate?
Contact us at (313) 886-7797 or through our website contact form to schedule a consultation and receive a customized service proposal with pricing details.
Reviews (1)
Alaura Price
May 13, 2017 Report
THIS COMPANY IS SO DISGRACEFULLY UNPROFESSIONAL!
THE STAFF I HAVE SEEN ARE ALL ALCOHOLICS & DRUG ADDICT'S
I WAS MAKING MY ROUNDS WHERE I WORK & CAUGHT EMPLOYEES SLEEPING ON THE JOB......I ALSO WITNESSED EMPLOYEES CLOCK-IN & LEAVE THE WORK SITE, THEN COME BACK TO THE WORKSITE & CLOCK-OUT LIKE THEY HAVE BEEN WORKING ALL DAY! BATHROOMS DO NOT BE CLEANED TO MY SATISFACTORY....... TRASH DOES NOT BE TAKEN OUT TO THE DUMPSTER! THE FLOORS ARE FILTHY.....I ASKED ONE EMPLOYEE NAMED DARLENE TO SWEEP & MOP THE LOBBY...THIS DISRESPECTFUL EMPLOYEE TOLD ME THATS NOT HER JOB.......GO FIND A MAN TO DO THAT! I