Best House Cleaning Services in Markham, ON
15 companies listed · 4 in Markham · 5 open 24/7 · 10 open weekends · 14 rated 4.5+
Data verified October 21, 2026
Mona Cleaning
Wendy's Cleaning & Organizing
Top Cleaning Services
H- House Cleaning Services Toronto GTA
Merry Maids
Listed for homeowners in and around Markham, ON, these 15 companies clean homes. Most price a one-off deep clean after they have seen the rooms, so treat anything quoted over the phone as a starting figure rather than a fixed one.

Area overview: Markham, ON
4 of the 15 companies we list are based in Markham; the other 11 serve Markham from towns including Richmond Hill (14 km), Scarborough (15 km) and North York (20 km). The companies on this page are rated from 4.3 to 5.0 across 1,441 reviews; 12 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the companies on this page are "price", "communication" and "professional". 5 are open around the clock; 10 are open on Saturdays and 8 on Sundays. 1 shows a licence on its website and 1 lists staff certifications (IICRC). Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2008. 5 offer emergency call-outs; 11 give free estimates; 4 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for 12 of the companies on this page; 11 publish a contact page; 11 list a public email and 5 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
How much can I learn about a cleaning company before I call?
Websites are on file for 12 of the 15 cleaning companies here. Read the page that sets out what a deep clean covers, then call with the questions it leaves open: exclusions, who supplies products, insurance, and who holds the key while you are at work.