If you need reliable cleaning services in Markham and in Stouffville, Richmond Hill, Pickering, and Toronto GTA you are on the right page. Our professional cleaning service spans over 20+ years where we hire cleaners of high integrity to deliver satisfactory cleaning in Markham and serve its people in the best way. Supreme Cleaning Group Inc. is a reliable name in office cleaning. We diligently take care of janitorial cleaning in Markham and we work effortlessly to ensure that we don't disappoint our loyal customers from the city. Since 1999, we have provided offices, buildings, clinics, general businesses and daycare centers with quality commercial cleaning services.