Vancouver & the Lower Mainland
Retaining wall costs in Vancouver & the Lower Mainland
Segmental block retaining walls — Allan Block and similar systems — run about $55 to $85 per square foot of wall face in the Lower Mainland, and natural stone $70 to $95. A typical 40-foot by 3-foot garden wall lands around $7,500 to $11,000. The critical thing most homeowners don't know: once a wall passes four feet in height, most municipalities require a permit and an engineer's stamp, which adds $2,500 to $4,500 before a single block is laid.
What it costs
| Segmental block (Allan Block) | $55 – $85 / sq ft of face | Most common choice — durable, engineered, wide colour range |
| Natural stone | $70 – $95 / sq ft of face | Depends on stone type and whether it's dry-stacked or mortared |
| Typical 40 ft × 3 ft garden wall | $7,500 – $11,000 | A common backyard size — height drives the number fast |
| Engineering + permit (walls over 4 ft) | $2,500 – $4,500 | Required by most Lower Mainland municipalities — budget for it |
Typical Lower Mainland ranges for planning purposes — every project is quoted individually after a free site visit.
What actually drives the price
- Wall height — cost is measured by face area, so height compounds quickly, and passing four feet triggers engineering
- Drainage behind the wall — gravel backfill and perforated drain pipe are what stop a wall from failing in Vancouver's rain
- Site access — if a machine can't reach the work area, material gets moved by hand and labour climbs
- Soil and slope — poor soil or a steep grade may require geogrid reinforcement extending well back into the hillside
Common questions
Do I need a permit for a retaining wall in BC?
Generally yes once the wall exceeds four feet in exposed height, and requirements vary by municipality. Walls near property lines or affecting drainage may need approval at lower heights too.
How long do these walls last?
A properly built and drained segmental wall lasts decades. Nearly every failed wall failed because water had nowhere to go, not because the blocks were wrong.
Can I build it myself?
Short garden walls under two feet, sure. Anything taller carries real structural and liability risk, and an unpermitted failed wall becomes your problem when you sell the house.
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