Service area
Commercial Cleaning Markham
Janitorial and facility maintenance for businesses in Markham — serving Markham Centre, Unionville, Thornhill, Milliken, Buttonville, and surrounding areas.
Local crews, GTA-wide standards
SMS Maintenance has cleaned Markham businesses for three decades. We staff sites with people who live nearby, which means shorter response times, reliable shift coverage, and supervisors who can be on your property the same day when something needs attention.
Markham's office nodes and tech campuses, plus its busy retail corridors from Unionville to Markham Centre, are covered by crews based in York Region — consistent staff and short response times.
Areas covered: Markham Centre, Unionville, Thornhill, Milliken, Buttonville, and surrounding areas
Services available in Markham
Nearby service areas
Frequently asked questions
Do you clean tech offices in Markham?
Yes — office and campus-style programs for Markham's business parks are among our most common contracts in the area.
Is weekend service available in Markham?
Yes. Evening and weekend scheduling is standard across all our service areas.
Get a commercial cleaning quote in Markham
Free on-site walkthrough. Fixed monthly pricing. No long lock-in contracts.