How We Set These Ranges
Reviewed 2026-10-01
Prices
The ranges come from price pages published by Ottawa and Ontario waterproofing, plumbing and masonry contractors and Ontario home-project cost sites, read in September 2026. We show a range only where at least two independent pages gave figures for the same job. Two pages whose tables matched line for line counted as one. An Ottawa directory page dated later than the day we read it was left out, and an automated cost page was never counted as a source. We never name a source, and we label every figure as published pricing, not a quote.
That leaves no range for weeping tile on its own, an outdoor backwater valve, structural foundation repair, underpinning or dampproofing alone. Those pages and lines say so instead.
The wall estimators
The estimator multiplies the published per-foot range by the wall length you enter, or the per-crack or per-well range by your count. It never adds one line to another and never shows a single figure. It does not know your soil, your depth or what is in the way, so treat it as a check on a quote, not a quote.
The rules and the rebate
Building Code figures are quoted from Ontario's Building Code (O. Reg. 163/24, Division B) with clause numbers on each page, as minimums, not a design. Permit and rebate details are quoted from the City of Ottawa's own pages. The City's protective plumbing rebate is shown on its own, with its conditions, and is never subtracted from a price; the City lists the program as currently under review.
What we left out
No price differences between neighbourhoods, no typical house sizes, no lifespans and no warranty norms. We are a matching service, not a waterproofing company, and we do not screen or verify contractors.