Roughly what does perimeter drain replacement cost in Metro Vancouver?

Perimeter drain replacement in Metro Vancouver typically runs $15,000–$40,000 for a standard single-family home, with most projects landing in the $20,000–$30,000 range. Larger homes, difficult access, or extensive landscaping restoration can push costs well above $40,000.

The wide range comes down to a few key variables. Lot size and home footprint are the biggest drivers — a compact East Van bungalow on a 33x120 lot costs considerably less to trench around than a large Burnaby or West Side home. Access matters enormously: if excavation equipment can't get into the backyard easily, hand-digging or compact equipment adds significant labour cost. Depth of excavation also varies — older homes with deeper foundations require more digging, shoring, and time.

What's typically included in a full perimeter drain replacement: excavation around the foundation perimeter, removal of the failed drain tile (often original clay or concrete pipe from the 1950s–70s), installation of new perforated PVC pipe in a gravel bed with filter fabric, waterproofing membrane on the foundation wall (if not already present), and backfill. What's often excluded — and where costs climb — is landscaping restoration (patios, fences, gardens, concrete walkways), sewer connection work, and interior drainage systems if needed as a complement.

Vancouver-Specific Considerations

Vancouver's 1,200mm+ annual rainfall makes functioning perimeter drainage genuinely critical, not optional. Many homes built before 1980 have original clay tile drains that are either collapsed, root-infiltrated, or simply disintegrated. Pre-1985 Vancouver Specials and older character homes in East Van, Burnaby, and New Westminster are particularly common candidates for this work.

A few local cost factors worth knowing: Metro Vancouver municipalities often require sewer separation (disconnecting footing drains from the sanitary sewer and redirecting to storm sewer or sump) during major drainage work. Budget an additional $5,000–$15,000 if this applies to your property — your municipality's engineering department can confirm. In areas with high water tables (parts of Richmond, Delta, South Surrey), a sump pump system may also be required alongside the perimeter drain, adding $1,500–$3,500.

A building permit is generally required for perimeter drain replacement — check with your municipal building department. In the City of Vancouver, call 311 or visit vancouver.ca/home-property-development/building-permits. Suburban municipalities like Surrey, Burnaby, and Coquitlam are often faster to permit.

Should You DIY?

This is firmly a hire-a-professional project. The excavation alone requires equipment and expertise, and improper installation can leave you with the same flooding problems — or worse, undermine your foundation. Get at least three quotes and ask contractors to camera-inspect your existing drain first (typically $300–$600) so you know exactly what you're dealing with before anyone starts digging.

Timing matters too — spring and early summer are ideal, giving you the dry season to complete the work and test the system before fall rains arrive. Contractors book up fast, so don't wait until September.

Browse licensed drainage and waterproofing contractors in our directory at the Vancouver Construction Network to find local professionals serving your area.