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24 contractors listed · 22 in Oshawa · 6 open 24/7 · 14 open weekends · 23 rated 4.5+
Data verified October 16, 2026
The 24 companies listed for Oshawa, ON clear blocked drains and sewer lines. Hours, jetting and camera work, and free estimate claims come from each company's own website. Ask whether the crew that arrives owns the camera, since that decides what you learn.
Of the 24 contractors we list here, 22 are in Oshawa itself; the other 2 do not publish an address. The contractors on this page are rated from 4.4 to 5.0 across 1,831 reviews; 3 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (93%), quality (87%) and responsiveness (84%). 6 are open around the clock; 14 are open on Saturdays and 10 on Sundays. The services the contractors on this page list most often on their websites are excavation (3), bathroom renovation (2), design (2), flooring (2) and kitchen renovation (2). 4 show a licence on their websites. 9 have ten or more years of experience, the longest 27 years. 6 offer emergency call-outs; 1 offers financing or payment plans; 9 give free estimates; 6 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for all 24 of the contractors on this page; 23 publish a contact page; 21 list a public email and 1 takes bookings online. 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.
Overnight availability is claimed by 6 of the 24 listings here. A backup that has reached a finished basement floor is worth the night rate, because standing sewage is a health problem rather than an inconvenience. A slow sink is not. Ask what the after-hours charge covers before agreeing.
