Unika Excavation Inc
“From the start, a relationship of trust, communication and listening lived up to my expectations”
Best Retaining Wall Contractors in L'Assomption, QC
15 companies listed · 4 in L'Assomption · 2 open weekends · 10 rated 4.5+ · 5 show a licence
Data verified October 18, 2026
Aménagement Paysager Repentigny Enr
“Superb work, beautiful finish, great team!”
L'Assomption Asphalte Inc
Le Groupe Unik Déglaçage à Vapeur / Déneigement de Toiture
“Great service, the truck arrives on time and even a little early!”
Aménagement 2J Inc.
“We are very satisfied not only with the work carried out which transformed the exterior layout beautifully but also with all the relational aspects we had with them.”
Christian Réno
“Fast efficient and good price easy choice if you want the best”
Listed for homeowners in and around L'Assomption, QC, 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: L'Assomption, QC
4 of the 15 companies we list are based in L'Assomption; the other 11 serve L'Assomption from towns including Terrebonne (22 km), Saint-Paul (14 km) and Lavaltrie (11 km). 14 of the companies on this page have a rating, from 4.1 to 5.0 across 171 reviews; 1 has 50 or more reviews and 10 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (91%), quality (82%) and value (48%). 2 are open on weekends. 5 show a licence on their websites. Domain records put 10 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 1 offers emergency call-outs. We have a website on file for 14 of the companies on this page; 8 publish a contact page and 11 list a public email. 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.
Do these companies show photos of finished walls?
A website link sits on 14 of the 15 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.
Imperméabilisation G.s.v
“Throughout the work I was advised by André Chartrand (president) and his super courteous and professional employees.”
Fissures et Drains A9 Excavation
“Really good company, listening to the customer”
Construction Ssms
“We had spandrels made and we are very satisfied with the result.”
Construction LJP Inc
“It respects and takes care of their customers and workers!”
Construction Laval Aubin Ltee
L'Archevêque & Rivest Ltée
Maconnerie S D L Inc
Cimentier Manuel Laflamme Inc
“Manuel and his two sons did a job of perfection.”
Bétonia Construction
Why these companies made our list
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