Best House Cleaning & Maid Services in Thornhill, ON
24 companies listed · 5 in Thornhill · 11 open 24/7 · 19 open weekends · all 24 rated 4.5+
Data verified October 19, 2026
Gtamegacleaning
Flair Cleaners
Condo Cleaning Services Toronto
Quality Housekeeping Toronto
Squeaky Cleaning Mississauga
Listed for homeowners in and around Thornhill, ON, these 24 companies take recurring cleaning work. A good slot is worth waiting for, because the crews with the steadiest schedules are the ones whose customers never leave. Frequency, hours and booking details come from each company's own website.

Area overview: Thornhill, ON
5 of the 24 companies we list are based in Thornhill; the other 19 serve Thornhill from towns including Toronto, Mississauga and Markham. The companies on this page are rated from 4.5 to 5.0 across 3,677 reviews; 18 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (86%), quality (83%) and responsiveness (67%). The topics that come up most in reviews of the companies on this page are "price", "communication" and "efficient". 11 are open around the clock; 19 are open on Saturdays and 13 on Sundays. The services the companies on this page list most often on their websites are deep cleaning (3), airbnb cleaning (2), carpet cleaning (2), commercial cleaning (2) and maid services (2). 3 have ten or more years of experience, the longest 18 years. 11 offer emergency call-outs; 16 give free estimates; 5 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 19 publish a contact page; 22 list a public email and 10 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Can I get a weekend cleaning slot in Thornhill?
Weekend slots are advertised by 19 of the 24 cleaning companies listed. Saturday slots go first and rarely open up, so the practical trick is to take a weekday slot and leave a key rather than wait months for a Saturday.