How much does a retaining wall cost in Coquitlam?
What actually drives the price, from the Coquitlam crew that builds this work. Updated October 2026.
Short answer: There's no honest flat price for a retaining wall, because two walls the same length can be very different jobs. The cost comes down to the wall type, the height (walls over 1.2 m in Coquitlam need a permit and an engineer), the drainage behind it, access for equipment and what's in the ground. We give a written price for the agreed scope after a free site visit, so you know the full cost before any work starts.
Your options compared
| Wall type | Good for | Lifespan and upkeep |
|---|---|---|
| Pressure-treated timber | Short garden walls and lower-budget jobs | Lowest upfront cost, but rots in our wet climate. Plan on replacing it in 15 to 20 years. |
| Concrete block (segmental) | Most backyard walls, curves and steps | Lasts decades with no maintenance when built on a proper base with drainage. |
| Natural stone or boulder | Natural look on slopes and ravine lots | Very long-lasting. Price depends heavily on stone and machine access. |
| Poured concrete | Tall, structural and property-line walls | The strongest option. Often engineered; forming and curing add time. |
Every site is different, so we don't publish prices. We give a written estimate for the agreed scope after a free site visit.
What changes the price
Height and permits
Under 1.2 m (4 ft) in Coquitlam needs no building permit. Over that, the City requires a permit and an engineered design, and no single wall can be taller than 2.4 m (8 ft). Terracing into two shorter walls can sometimes keep each tier under the threshold.
Drainage behind the wall
Every wall we build gets clear drain rock and a perforated drain pipe behind it. Water pressure is the number one reason walls lean and fail in our climate, so it's built into every wall we build.
Access
If a mini-excavator can reach the work, the job goes faster. Tight side yards mean moving soil and block by hand.
Removing the old wall
Tearing out a rotten timber wall and hauling it away is part of many jobs and is priced into the estimate.
Soil and slope
Clay, rock, or a steep slope behind the wall means more excavation and a deeper base.
Recent retaining walls work
What clients say
They transformed my backyard with new artificial grass, a retaining wall, and modern landscaping that turned out even better than I expected! Gareth and the crew showed up on time every day, communicated clearly throughout the project, and left the site clean and tidy at the end of each day. Highly recommend them if you're looking for quality landscape construction done right.
I cannot recommend Premier Grounds Contracting Ltd enough! From start to finish, the entire team was professional, reliable, and incredibly skilled. They transformed my backyard into a stunning modern oasis with new grass, a beautiful patio, and a retaining wall with built in planters that exceeded my expectations. Their attention to detail and commitment to quality were evident every step of the way.
Common questions
What's the cheapest type of retaining wall?
Pressure-treated timber has the lowest upfront cost, but it rots in our wet climate and usually needs replacing in 15 to 20 years. Concrete block costs more at the start but lasts decades, so it's often cheaper over the life of the wall.
Do I need a permit for a retaining wall in Coquitlam?
Walls under 1.2 m (about 4 ft) don't need a building permit but must still meet City bylaws and the BC Building Code. Walls over 1.2 m need a building permit and an engineered design. No wall can exceed 2.4 m, and walls over 0.6 m should have a guard or fence on top.
Why won't you give a price over the phone?
Because the things that drive the price, like height, soil, drainage and access, can only be judged on site. A phone number would be a guess. A site visit gets you a written price for the agreed scope you can actually budget on.
How long does a retaining wall take to build?
A typical backyard block wall takes a few days. Engineered and poured concrete walls take longer because of forming, inspections and curing.
Is the site visit really free?
Yes. We come out, measure, look at slope and drainage, and send you a written estimate with the wall type, height, drainage and base depth spelled out.
Want your exact number?
Free site visit and a written estimate for the agreed scope.