DRYHOMEBC

Commercial Building Drainage & Waterproofing — Lower Mainland BC

Office, mixed-use and standalone commercial buildings carry far more roof and hardscape runoff than a house, and a blocked perimeter or storm line shows up as a flooded lower floor, a wet elevator pit or a slab that never dries. Tell us about the building and we'll match you with contractors who work at commercial scale.

What goes wrong on commercial buildings

Water in lower levels and elevator pits

Hydrostatic pressure against below-grade walls and pit slabs is the most common commercial call in BC, usually traced back to a silted perimeter drain or a failed pit pump.

Storm connections at capacity

Large roof areas, parking surfaces and added hardscape overload storm laterals installed for a smaller original footprint.

Working around tenants

Commercial work is planned around business hours, parking access, fire lanes and traffic management — ask every bidder how they will stage the site.

Services for commercial buildings

Drain Tile for commercial buildings

Commercial perimeter systems run deeper and longer than residential drain tile, and are usually scoped section by section from cleanouts so the building stays open during the work.

Basement Waterproofing for commercial buildings

Below-grade commercial walls are commonly treated with exterior membrane where excavation is possible, and with injection plus interior drainage where the wall is against a property line.

Drainage for commercial buildings

Site drainage on commercial property covers catch basins, trench drains, storm laterals, oil-water interceptors and detention systems, not just the building perimeter.

Typical work on commercial buildings

Excavated foundation trench with new perforated perimeter drain pipe and drain rock
Perimeter drain replacement
Worker applying exterior waterproofing membrane and dimple board to a foundation wall
Below-grade waterproofing
High-pressure hydro jetting of a commercial catch basin in a parking lot
Catch basin & storm line service

How below-grade drainage is supposed to work

Basement / crawlspaceRoof runoffDownspout leaderDrain rockPerimeter drainTo storm or sumpWaterproof membrane
Rain runs off the roof, into the leaders, down through drain rock to the perimeter drain, then out to the storm connection or sump — keeping water off the foundation wall.

Commercial Buildings drainage — quick answer

Drain tile, drainage and waterproofing contractors for offices, mixed-use and commercial buildings across Metro Vancouver and the Fraser Valley. DRYHOMEBC covers 14 Lower Mainland and Fraser Valley cities: Vancouver, Burnaby, New Westminster, Richmond, Surrey, Delta, White Rock, Coquitlam, Port Coquitlam, Port Moody, Maple Ridge, Langley, Abbotsford and Chilliwack.

Key facts

  • Water in lower levels and elevator pits: Hydrostatic pressure against below-grade walls and pit slabs is the most common commercial call in BC, usually traced back to a silted perimeter drain or a failed pit pump.
  • Storm connections at capacity: Large roof areas, parking surfaces and added hardscape overload storm laterals installed for a smaller original footprint.
  • Working around tenants: Commercial work is planned around business hours, parking access, fire lanes and traffic management — ask every bidder how they will stage the site.
  • Quotes are free and carry no obligation.
  • Work is normally phased so the building stays in operation.

Frequently asked questions

Can perimeter drains be replaced without closing the building?

Yes. Commercial perimeter systems are normally replaced section by section from cleanouts, with traffic management and fire-lane access maintained so tenants keep operating.

Why is water showing up in the elevator pit?

Elevator pits sit below the surrounding slab, so they collect any groundwater the perimeter drain no longer carries away. The fix is usually a combination of drain replacement, pit waterproofing and a reliable pit pump with an alarm.

How much does commercial drainage or waterproofing work cost in BC?

Commercial pricing depends on depth, access, length of perimeter and how much of the site has to stay open during the work. Most contractors scope from a camera inspection first, then price by section. Quotes through DRYHOMEBC are free and carry no obligation.

How fast can someone attend an active flood?

Send the request with 'urgent' in the details and we push it to crews with emergency capacity in your city — most respond the same or next business day, and pump-out or temporary bypass work can usually start immediately.

Which cities do you cover?

Metro Vancouver and the Fraser Valley: Vancouver, Burnaby, New Westminster, Richmond, Surrey, Delta, White Rock, Coquitlam, Port Coquitlam, Port Moody, Maple Ridge, Langley, Abbotsford and Chilliwack.

Looking after a house instead?

The same crews handle single-family homes, duplexes and townhouses. Start with the residential service that matches your problem.

Residential drain tile

  • Drain Tile Repair
  • Drain Tile Replacement
  • Drain Tile Inspection

Residential basement waterproofing

  • Wet Basement Repair
  • Foundation Waterproofing
  • Basement Leak Repair

Residential drainage

  • Perimeter Drainage
  • French Drains
  • Yard Drainage

Browse every city we cover →

Request a Free Commercial buildings Quote

Tell us about the property, the water issue and any access or scheduling constraints.

  1. 1. Problem›
  2. 2. Timing›
  3. 3. Property›
  4. 4. Photos›
  5. 5. Contact

What problem are you experiencing?

Commercial buildings drainage by city

Commercial buildings in VancouverCommercial buildings in SurreyCommercial buildings in RichmondCommercial buildings in New WestminsterCommercial buildings in BurnabyCommercial buildings in CoquitlamCommercial buildings in Port CoquitlamCommercial buildings in Port MoodyCommercial buildings in DeltaCommercial buildings in LangleyCommercial buildings in White RockCommercial buildings in Maple RidgeCommercial buildings in AbbotsfordCommercial buildings in Chilliwack