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24 companies listed · 23 in Oshawa · 3 open 24/7 · 13 open weekends · 22 rated 4.5+
Data verified October 16, 2026
Listed for homeowners in and around Oshawa, ON, these 24 companies build and rebuild retaining walls. Wall types, materials and seasonal hours are what each company publishes for itself, and the ratings and quoted lines are drawn from public reviews.
Of the 24 companies we list here, 23 are in Oshawa itself; the other one does not publish an address. The companies on this page are rated from 3.8 to 5.0 across 725 reviews; 2 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), quality (89%) and responsiveness (80%). The topics that come up most in reviews of the companies on this page are "price" and "communication". 3 are open around the clock; 13 are open on Saturdays and 9 on Sundays. The services the companies on this page list most often on their websites are excavation (3), design (2), flooring (2), landscaping (2) and outdoor living spaces (2). 1 shows a licence on its website. Domain records put 7 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 3 offer emergency call-outs; 7 give free estimates and 4 are family- or locally-owned. 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.
A website link sits on 21 of the 24 wall builders here. A photograph of a finished wall tells you very little, because everything that fails is behind the face. Look for pictures taken mid-build instead: the base trench, the drainage stone going in, the grid rolled out between courses. Ask to see a wall that has been standing through several winters.
