EC Foundations
“If you are reading this review and in need of Foundation work and/or repair, call Scott Bullen.”
Best Retaining Wall Contractors in Nepean, ON
24 companies listed · 6 in Nepean · 2 open 24/7 · 9 open weekends · 23 rated 4.5+
Data verified October 18, 2026
Medusa Stoneworks
“They listened and understood our requirements and made value-added recommendations to us based on the intimate knowledge and experience in their field to make the end product look amazing.”
Masonry Nation
“Justin replied our questions promptly and provided his professional inputs and recommendations by considering some different scenarios.”
Ottawapro Landscape Design & Construction
“Dan and his team did an outstanding work for my home landscape project this summer.”
BTM Builders Inc.
“The two gentleman that arrived early in the morning set to work immediately; had taped placed plastic around the work area, and were extremely Professional and did the job perfectly!!!”
Bedrock Construction & Design
Listed for homeowners in and around Nepean, 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.
Area overview: Nepean, ON
6 of the 24 companies we list are based in Nepean; the other 18 serve Nepean from Ottawa, Carp and Stittsville. The companies on this page are rated from 4.2 to 5.0 across 1,527 reviews; 11 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (90%), quality (88%) and responsiveness (78%). The topics that come up most in reviews of the companies on this page are "communication", "estimates" and "price". 2 are open around the clock; 9 are open on Saturdays and 6 on Sundays. The services the companies on this page list most often on their websites are basement waterproofing (2), driveway extensions (2), interlock repairs (2) and walkways (2). 4 show a licence on their websites and 1 lists staff certifications (WETT). 11 have ten or more years of experience, the longest 27 years. 2 offer emergency call-outs; 3 offer financing or payment plans; 13 give free estimates; 6 are family- or locally-owned and 1 lists coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do these companies show photos of finished walls?
A website link sits on all 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.
Foundation Repair Action Restoration
“Once removed, the original stone foundation was beautiful, even more so after all the work was completed.”
D'Agui Masonry Ottawa
“Greg was great to deal with, and all his crew were so pleasant.”
Ottawa Cedar
“He came to do an in-person estimate and then did an incredible job installing the hedges and irrigation system.”
Cornerstone Brickworks Inc.
“The job was done on time with excellent communication on all aspects from start to finish.”
Black Tar Construction
“The crew was excellent and the product was well done.”
Canadian Masonry Services
“They came right over to take a look and once I got the quote same day, they came the next day to start the job.”
WCI Ottawa
“We would definitely use this company in the future and would recommend them to friends and family.”
Stonehenge Masonry
“Their customer service is impeccable and so was the quality of their work.”
Custom Interlock
“We asked for a very technical project - and they exceeded our expectations.”
Top Rock
“Had the pleasure of having Mario & his team do the interlocking in our front yard.”
The Foundation Guys Inc.
“Dillon, Justice and Paul were the boots on the ground and did a thorough job inside.”
Killarney Landscaping
“Very glad i chose this company, Dan was very easy to work with, answered all my questions and job was done when he advised it would be.”
Ardel Concrete Services
“What sold me on them though, and the reason I'd recommend them over some of their competition which I'd also contacted for this job and was much less impressed with, is that both of them went above and beyond in the job.”
Keo-Can Landscape & Renovations
“They went above and beyond to meet our requirements, providing top-notch service and delivering results that exceeded our expectations.”
Bulgari Paving
“Will definitely be contacting them again in the future for future driveway needs.”
Ottawa Foundation Repair
“I felt like they were very thorough and i was dealing with honest people.”
Slate Interlock & Design
“Nick, Ashley and their team were great to deal with from the initial meeting to the completion of our project.”
Edenza Interlock and Landscaping
“We've already recommended them to our neighbors and friends, and we'll certainly engage them for our future projects.”
Why these companies made our list
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