Best Retaining Wall Contractors in St. Catharines, ON
15 companies listed · 11 in St. Catharines · 7 open weekends · 11 rated 4.5+ · 1 shows a licence
Data verified October 21, 2026
Complete Casa Construction
Slab Rehab Inc.
Sfd Concrete
Holder Retaining Walls
Merit Contractors Niagara
Listed for homeowners in and around St. Catharines, ON, these 15 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.

Area overview: St. Catharines, ON
11 of the 15 companies we list are based in St. Catharines; the other 4 serve St. Catharines from Thorold (9 km). 13 of the companies on this page have a rating, from 3.0 to 5.0 across 457 reviews; 2 have 50 or more reviews and 11 are rated 4.5 or higher. The topics that come up most in reviews of the companies on this page are "price" and "estimates". 7 are open on Saturdays and 2 on Sundays. 1 shows a licence on its website. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 1 offers emergency call-outs; 8 give free estimates and 2 are family- or locally-owned. We have a website on file for 14 of the companies on this page; 12 publish a contact page; 12 list a public email and 1 takes 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.
Why are companies from other towns listed here?
Out of 15 listings, an address in St. Catharines is shown on 11. The others sit within 15 km. Wall work moves machines, pallets of block and truckloads of stone, so crews travel for it happily; the material delivery often costs more than the drive does.