What is a realistic timeline for perimeter drain replacement on a Vancouver lot?

A full perimeter drain replacement on a typical Vancouver lot takes 3–7 days of active construction work, but the full project from first call to final backfill typically runs 4–10 weeks when you factor in planning, permits, and scheduling.

The wide range comes down to lot size, access conditions, soil type, and how much additional work gets uncovered once excavation begins — and in Vancouver, there's almost always something additional.

What the Timeline Actually Looks Like

The planning and quoting phase usually takes 1–2 weeks. You'll want 2–3 quotes from experienced drainage contractors, and a good contractor will want to inspect your existing cleanouts, review your grading, and sometimes camera-inspect the old drain tile before pricing the job. This step is worth doing properly — perimeter drain scopes can change significantly once the ground opens up.

Permit requirements vary by municipality. In the City of Vancouver, a plumbing permit is typically required for perimeter drain work, and you may also trigger a sewer separation requirement if your lot still has a combined storm/sanitary system — budget an extra $5,000–$15,000 and 1–2 additional weeks if that applies. Suburban municipalities like Surrey, Burnaby, and Coquitlam are generally faster to permit, often 2–4 weeks versus Vancouver's sometimes longer queues.

The active construction phase breaks down roughly like this: excavation around the full perimeter of a standard 33×120 Vancouver lot takes 1–2 days with a mini-excavator. Installing new perforated pipe, filter sock, and drain rock takes another 1–2 days. Connecting to the sump pit or storm outlet, grading, and inspection takes another half to full day. Backfill and surface restoration (sod, concrete, or paving) adds 1–2 more days depending on what's above grade.

Vancouver-Specific Factors That Affect Your Timeline

Timing matters enormously here. The Lower Mainland gets 1,200mm+ of rain annually, and most perimeter drain failures become obvious in fall and winter — which is exactly when you don't want to be excavating. Ideally, schedule this work between May and September. Excavating saturated clay soil in November is miserable, slower, and more expensive.

Landscaping and hardscaping are the biggest timeline wildcards. If your perimeter drain runs under a concrete driveway, a deck, or mature landscaping, expect demolition and restoration to add 2–5 days and significant cost. Homes in Shaughnessy, Kerrisdale, or anywhere with established gardens should budget extra time for careful hand-digging near tree roots.

Older homes (pre-1970s) often have clay tile or concrete pipe that has completely collapsed or root-infiltrated. If your contractor opens up the trench and finds something unexpected — and they often do — add 1–3 days for scope changes.

Typical Costs in Metro Vancouver

• Low end (straightforward lot, good access, no hardscaping): $15,000–$22,000
• Mid-range (typical Vancouver lot with some landscaping, standard conditions): $22,000–$35,000
• High end (complex access, driveway demolition, sewer separation, large lot): $35,000–$60,000+

These figures include excavation, new perforated pipe and filter fabric, drain rock, sump pit work, and basic surface restoration. Landscaping restoration is often quoted separately.

Your Next Steps

Get your quotes now if you're planning spring work — drainage contractors book up fast. Ask specifically whether your municipality requires a plumbing permit, whether a sewer separation inspection will be triggered, and what the contractor's policy is on scope changes discovered during excavation (get that in writing). A reputable contractor will camera-inspect your existing system before quoting so there are fewer surprises.

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