Drainage for Apartment Buildings — Lower Mainland BC

Site drainage upgrades — regrading, area drains, downspout leaders and catch basins — keep surface water off walkways and away from ground-floor units.

Why apartment buildings need this work

Drainage work moves water away from the building and off the property. On Lower Mainland lots — clay soils in Surrey, delta silt in Richmond and Delta, slopes in Coquitlam and Port Moody — the right system depends entirely on where the water comes from and where it can legally go.

Ground-floor and garden suites

Damp carpets, musty odours and mould complaints from lower units usually follow a failed perimeter drain or grade that slopes toward the building.

Mechanical and storage rooms

Boiler rooms, electrical rooms and locker areas below grade need reliable sump and backflow protection during heavy winter rain.

Tenant notice and disruption

Excavation affects parking, walkways and landscaping — good contractors plan phasing and notice periods with property management up front.

Drainage scopes of work

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