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Killarney Landscaping
- Walkway
- Ideas
- Execution
“The entire property looks fantastic, and we are grateful for Dan's vision, design expertise, and excellent workmanship that brought it all together for us.”
Best Retaining Wall Contractors near Carp, ON
3 of these companies are based in Carp; the others serve Carp from towns including Ottawa, Gatineau, QC and Almonte.
9 open weekends · 20 rated 4.5+ · 2 show a licence
Data verified October 19, 2026
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ALM Construction & Landscaping Inc.
- Renovation
- Team
“I would highly recommend them for any outdoor or indoor renovation projects you would like to get done.”
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L
- Estimate
- Quote
- Garden
“To add to the positive experience, 14 days following the repairs, as we were reinstalling the 5" of earth that they had to dig to reparge, they showed up to inspect the work that they had performed.”
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D'Agui Masonry Ottawa
- Clean
- Foundation
- Quote
“The owner took the time to explain the scope of the work, called 24h in advance to inform his crew would be on site the next day at 7am and the crew promptly showed up at 6:59 and finished by 4pm.”
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Cornerstone Brickworks Inc.
- Quote
- Company
- Efficient
“I was concerned that it would stand out between the new an old brick work but they matched everything really well and several of our neighbours commented on what a great job it was.”
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Black Tar Construction
- Home
- Estimator
- Curb
“Very happy with the work completed, Black Tar installed a new driveway with asphalt and interlock around the perimeter, looks like the driveway we always dreamed of, officially no outstanding projects in the front of our house!!”
Listed for homeowners in and around Carp, 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: Carp, ON
The 24 companies on this page are rated from 4.2 to 5.0 across 1,325 reviews; 7 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise quality (91%), professionalism (90%) and responsiveness (75%). The topics that come up most in reviews of the companies on this page are "communication", "estimates" and "price". 9 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are retaining walls (3), basement waterproofing (2), foundation crack repairs (2) and interlock driveways (2). 2 show a licence on their websites. 12 have ten or more years of experience, the longest 27 years. 4 offer financing or payment plans; 10 give free estimates; 6 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 24 of the companies on this page; 17 publish a contact page; 19 list a public email and 1 takes bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Will someone price the wall without charging?
No-charge estimates are advertised by 10 of the 24 companies here. A low wall on firm ground with easy access can be priced from a walk around. Anything tall, anything on a steep slope and anything with a driveway above it needs levels taken and usually an engineer, and that part is design work somebody pays for.
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WCI Ottawa
- Home
- Efficient
- Work
“This company operates in a way that builds confidence in their work and product which we appreciated since our driveway of 3,000 sqft was not as straightforward as many.”
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Medusa Stoneworks
- Property
- Space
- Pricing
“These guys are great at what they do professional quality great pricing turned our back yard into an oasis wife is already thinking about the next project at our trailer cant wait to see what visions these guys will bring.”
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Top Rock
- Walkway
- Design
- Result
“My wife and I seldom experience such contractors as caring and customer-first approach as Mario and his staff and will definitely recommend his service for my friends' backyard or front yard needs.”
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The Foundation Guys Inc.
- Clean
- Communication
- Product
“They were in and out of my 900 sq foot crawlspace in less than a day, including removal of some ancient relics that had been left down there by previous owners.”
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Ardel Concrete Services
- Fair
- Window
- Leak
“Very competitive price (actually the lowest among the few that I had inquired, while providing the best services/solutions in terms of expertise, timeliness and quality of work).”
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Keo-Can Landscape & Renovations
- Budget
- Communication
- Flower
“Everett came within a few days of me notifying him, and he repaired the separation with no charge, claiming he saw that as warranty work - now that's quality service!!”
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Ottawa Foundation Repair
- Questions
- Quality
- Leaking
“Ottawa Foundation Repair is one of those services you never thought you would need, but when you've got a cracked foundation these are the people to call.”
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Slate Interlock & Design
- Questions
- Ideas
- Deck
“The estimated timeline given to us was accurate, with responsive communication closer to the project start date and daily check ins throughout the project completion to ensure our satisfaction.”
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Goodboy Landscaping
- River
- Project
- Happy
“We even had an adjustment needed well after the job was completed, and Clinton came well at the end of the day before a long weekend to ensure it was fixed and to make sure everything looked the way we wanted.”
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Dalax Landscaping & Construction
- Company
- Customer Satisfaction
- Driveway
“The project required several phases: excavation and installation of drains, redevelopment and reconstruction of a concrete staircase, paving stone entrance, retaining wall, steps and stone path.”
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Renco Home Improvements
- Team
- Work
- Happy
“Terry provided detailed information regarding his assessment of the issue, some repair actions I can do myself, and transparent cost breakdown in-case the issue develops further.”
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Construction Viking
- Trust
- House
- Project
“We were very satisfied with the products and services offered by Construction Viking for all the cabinets, counters and island in our new house as well as the ceramic installation.”
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King Concrete Ottawa Inc.
- Walkway
- Patio
- Communication
“They leveled and compacted everything using a laser-level device, placed reinforcing steel bars, and poured concrete well over the recommended thickness.”
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Shade Group Inc.
- Questions
- Plan
- Quality
“After doing some research online, I was brought to Alan and Shade Group with a project to extent our backyard and clean up a ton of brush, deadfall and unhealthy trees.”
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WLS Landscaping
- Company
- Backyard
- Property
“Josh did an amazing job, he collaborated with us to take our thoughts & ideas into considerations, made great suggestions to create a good plan & timeline.”
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Yards Unlimited Landscaping Inc.
- Job
- Questions
- Results
“Their team worked hard, they had all the equipment they needed onsite, and there was no waiting around once the job started - the logistics were all in place, and the project was completed without delays.”
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Hardscape Ottawa
- Driveway
- Team
- Result
“We are also very impressed with the performance of Hardscape, there were some problems but their total commitment to resolving the issues shows Hardscapes customer service is a priority.”
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WRC Contracting
- Top Soil
- Landscaping
- Communication
“We have had WRC out twice now, once to replace our front steps with stone steps and once to do some major landscaping work, which included the removal of soil from the side of a building and the demolition of concrete walls/foundations.”
Retaining Wall Design & Installation Services in Carp, ON Cost Estimates
Minimum cost
$1370
Maximum cost
$14840
National Average
$6134
Avg Per Hour Rates
$81
$3659
$9602
Average price range is based on 472 cost profiles
Why these companies made our list
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