Best Plumbers in Newmarket, ON
15 contractors listed · 8 in Newmarket · 7 open 24/7 · 10 open weekends · all 15 rated 4.5+
Data verified October 21, 2026
Solid Plumbing and Gas Inc.
Premium Plumbers
Hustle and Flow Plumbing
Insight Plumbing Inc.
Burnett's Highland Plumbing
Listed for homeowners in and around Newmarket, ON, these 15 companies cover plumbing work. Hours, licence claims and free estimate offers come from each company's own website. Ask about provincial workers compensation coverage too, since the work happens inside your home.

Area overview: Newmarket, ON
8 of the 15 contractors we list are based in Newmarket; the other 7 serve Newmarket from towns including Aurora (6 km), Bradford (11 km) and Thornhill (2 km). The contractors on this page are rated from 4.5 to 5.0 across 1,451 reviews; 9 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (97%), responsiveness (84%) and quality (79%). The topics that come up most in reviews of the contractors on this page are "price" and "efficient". 7 are open around the clock; 10 are open on Saturdays and 8 on Sundays. The services the contractors on this page list most often on their websites are sump pumps (3), backwater valves (2), hydro jetting (2) and toilet repairs (2). 6 show a licence on their websites. Domain records put 2 websites of the contractors on this page at ten or more years old; the oldest dates from 2013. 7 offer emergency call-outs; 2 offer financing or payment plans; 5 give free estimates; 2 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Which plumbers listed for Newmarket take calls at night?
Cover at any hour is claimed by 7 of the 15 plumbing listings here. Before paying a night rate, shut the main off and see whether the trouble stops. If it does, book for normal hours and get the same repair for less. Confirm the after-hours rate on the phone.


