
Erosion Control & Slope Stabilization.
Engineered solutions for eroding slopes, unstable hillsides, and water damaged terrain across the Fraser Valley.
Stabilize the Ground. Protect Your Property.
Slope erosion is one of the Fraser Valley's most serious property challenges. Our combination of heavy rainfall, clay soils, and hilly terrain creates conditions where unprotected slopes wash away, undermine structures, and deposit sediment across lower properties. Once erosion begins, it accelerates with each rain event. What starts as a small gully can become a major slope failure that threatens foundations, retaining walls, and infrastructure.
At Trueform, erosion control starts with understanding why the erosion is occurring. Is water concentrating at a specific point on the slope? Is the soil type inherently unstable? Has vegetation loss exposed bare soil? Was the slope cut or filled without proper compaction? Each cause requires a different engineering response, and applying the wrong solution wastes money while the erosion continues.
Retaining walls are the most effective solution for steep slopes and areas where maximum usable space is needed. We build engineered retaining walls that hold the slope permanently while creating level terraces for planting, access, or recreation. For slopes that do not require the full structural capacity of a retaining wall, we use geotextile reinforcement, riprap, and planted slope systems that stabilize the surface while maintaining a natural appearance.
Terracing converts a single steep slope into a series of manageable level steps separated by short retaining walls or planted banks. This approach reduces the erosive velocity of water flowing down the slope, provides level planting areas that retain moisture, and creates access for maintenance. Terraced slopes are both more stable and more attractive than a single uniform slope.
Drainage is always part of the erosion control solution. Water is the primary driver of erosion, and managing it is the key to long term stability. We install French drains, interceptor drains, and surface swales to capture and redirect water before it reaches the slope face. At the base of slopes, we install collection systems that prevent water from pooling and saturating the soil, which would undermine even the best built retaining wall.
How We Work
Erosion Assessment
We identify the cause, extent, and risk level of the erosion. Soil conditions, water sources, and slope geometry evaluated.
Engineering Solution
Design the stabilization approach: retaining walls, terracing, geotextile, riprap, vegetation, or combination.
Stabilization Work
Slope work executed with proper drainage integration. Materials installed per engineering specifications.
Vegetation & Monitoring
Erosion control plantings installed where applicable. Site monitored through the first rainy season.
Premium Materials. Full Warranty.
Geotextile Fabric
Erosion control fabric that stabilizes soil while allowing water to drain. Used on slopes, behind walls, and under riprap.
Riprap
Angular rock placed on slopes to armor the surface against water erosion. Sized based on slope angle and water velocity.
Retaining Wall Systems
Allan Block, Belgard, and natural stone walls engineered for slope retention with geogrid reinforcement.
Erosion Control Plants
Deep rooted native plants and ground covers that stabilize soil biologically. Kinnikinnick, salal, and native ferns.
What to Expect
Erosion control costs depend heavily on the severity of the problem and the solution required. Simple planted slope stabilization costs $5 to $15 per square foot. Riprap installation runs $20 to $40 per square foot. Retaining wall solutions range from $35 to $85 per square face foot. Complete slope stabilization projects for residential properties typically range from $5,000 to $40,000. We provide detailed estimates after our site assessment.
Frequently Asked Questions
Warning signs include visible gullies or channels in the slope, exposed roots or soil, lean in trees on the slope, cracks at the top of the slope, bulging at the base, and water seeping from the slope face. If you notice any of these signs, contact us for a free assessment before the next rainy season.
Yes. Erosion near foundations can undermine footings, increase hydrostatic pressure against basement walls, and redirect water toward your home. Foundation exposure from erosion should be addressed urgently.
Retaining walls over 4 feet require permits in most Fraser Valley municipalities. Large scale grading and slope work may also require permits. Natural slope stabilization with plantings and riprap typically does not require a permit. We verify requirements for your specific situation.
Simple riprap and planting projects take 2 to 5 days. Retaining wall solutions take 1 to 3 weeks depending on wall height and length. Large terracing projects may take 3 to 6 weeks. Timing around the rainy season is important.
Planted slope stabilization costs $5 to $15 per sq ft. Riprap runs $20 to $40 per sq ft. Retaining wall solutions cost $35 to $85 per sq face ft. Complete projects range from $5,000 to $40,000.
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Erosion Control & Slope Stabilization Across the Fraser Valley
We provide erosion control & slope stabilization services throughout the Fraser Valley and Lower Mainland, BC.
Erosion Control & Slope Stabilization in Your City
Visit your city page for local project notes, neighborhood coverage, soil and permit details, and answers to questions specific to building in your area.
Erosion Control & Slope Stabilization in Abbotsford
Mount Lehman, Clayburn Village, East Abbotsford, Sumas Prairie, and more.
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Fort Langley, Walnut Grove, Willoughby, Murrayville, and more.
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South Surrey, Cloverdale, Fleetwood, Newton, and more.
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Cedar Valley, Silverdale, Hatzic, Ferndale, and more.
View Erosion Control & Slope Stabilization in MissionErosion Control & Slope Stabilization in Chilliwack
Sardis, Promontory, Garrison Crossing, Vedder Crossing, and more.
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Silver Valley, Albion, Hammond, Cottonwood, and more.
View Erosion Control & Slope Stabilization in Maple RidgeErosion Control & Slope Stabilization in Coquitlam
Burke Mountain, Westwood Plateau, Maillardville, Austin Heights, and more.
View Erosion Control & Slope Stabilization in CoquitlamErosion Control & Slope Stabilization in Burnaby
Burnaby Heights, Capitol Hill, Lochdale, Westridge, and more.
View Erosion Control & Slope Stabilization in BurnabyErosion Control & Slope Stabilization in Delta
Ladner, Tsawwassen, North Delta, Sunshine Hills, and more.
View Erosion Control & Slope Stabilization in DeltaErosion Control & Slope Stabilization in White Rock
Uptown White Rock, East Beach, West Beach, Marine Drive, and more.
View Erosion Control & Slope Stabilization in White RockErosion Control & Slope Stabilization in Vancouver
Kitsilano, Point Grey, Dunbar, Kerrisdale, and more.
View Erosion Control & Slope Stabilization in VancouverReady to Get Started?
Tell us about your erosion control & slope stabilization project and receive a detailed, no obligation estimate. Based in Abbotsford, serving the Fraser Valley and Lower Mainland.
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