How to check if a North Shore condo has been rainscreened

If you are buying a wood-frame condo on the North Shore built between roughly 1985 and 2000, one question outranks every other: has the building envelope been remediated, or hasn’t it?

Everything else — the view, the layout, the monthly fee — sits downstream of that answer. A remediated building is a normal purchase. An un-remediated one carries a bill that has not arrived yet, and the last published averages put that bill in the tens of thousands per unit.

Here is the uncomfortable part, and it is the reason this page exists: the strata is not obliged to hand you an engineer’s report about a failing envelope until somebody has put the money to a vote. A building can look entirely clean on paper while a consultant’s assessment sits in a council file. More on that below.

Why the North Shore got this worse than most places

The leaky condo crisis was not bad luck. Two things combined.

The buildings were sealed instead of drained. Construction through that era used a face-sealed approach — the exterior was meant to keep every drop out. When water got in anyway, and it always does, there was no path for it to get back out. It sat in the wall and rotted the framing.

The building code did not require a drainage cavity until much later. The BC Building Code now requires a capillary break behind cladding in high-moisture climates, and the usual way of satisfying it is a drained and vented air space at least 9.5 mm deep behind the cladding — that is the rainscreen. The requirement arrived with the 2006 BC Building Code, in force 15 December 2006. One detail matters when you are dating a building: projects whose permit application was accepted before that date were still built under the old rules, so a building finished in 2008 is not automatically a rainscreen building.

Now add the rainfall. Vancouver airport averages about 1,159 mm of precipitation a year on the 1991–2020 climate normals. The Environment Canada gauge up the Capilano valley in North Vancouver averages 2,522 mm on the 1981–2010 normals. Those two figures come from different measurement periods, and the Capilano gauge sits higher up the valley than most of the housing does, so treat the gap as a direction rather than a precise multiple. The direction is not in dispute: the same face-sealed wall took far more water here than it took in Richmond, for decades, before anyone required a drainage cavity behind it.

The scale of it. Of 159,979 apartment strata units built in BC between 1985 and 2000, roughly 72,193 — about 45% — had envelope leaks, according to figures reported by the Globe and Mail in 2008. Early government estimates put the repair bill at $1.5 billion; later reporting put it nearer $3–4 billion. Just over 700 schools were built in the same window and about 400 of them leaked too.

The Barrett Commission, appointed on 23 April 1998, reported that June with 82 recommendations. Its conclusion heads off the usual excuse: climate and economic pressures, it found, “do not account for the magnitude of the problem.”

And locally this is not history. On the 2021 Census, 7,500 of the 32,700 occupied dwellings in the District of North Vancouver — 22.9% — were built between 1981 and 2000. In West Vancouver it is 4,575 of 17,690, or 25.9%. In the City of North Vancouver, 6,595 of 27,295, or 24.2%. Roughly a quarter of the homes on the North Shore come from the era in question. As of 2018 the Condominium Home Owners Association estimated up to 200 buildings across the Lower Mainland, Kelowna and Vancouver Island were still standing un-remediated; no more recent estimate has been published.

What remediation costs, and why the published numbers are old

The most reliable per-unit figures in the public record come from a consultant’s report prepared for the Homeowner Protection Office and reported in September 2007: about $62,000 per unit for wood-frame buildings and $72,000 for concrete.

Two named projects, for scale. The Manhattan in Victoria, 126 units, came to roughly $33,000 per owner. Gardenia Villa in Vancouver, a 1994 building with 250 units, was hit with a $16.8 million levy — about $67,200 a unit — but that one is worth reading carefully: the levy was imposed by a 2016 BC Supreme Court order after the owners had repeatedly voted it down.

Read those numbers as a floor, not a forecast. They are from 2007 and 2016. Construction costs have risen substantially since, and nobody has published an updated provincial average. Anyone quoting you a per-unit figure in 2026 is extrapolating.

The number worth remembering is a different one. Original 1990s estimates put remediation at $10,000 to $15,000 per unit. The real costs came in five to six times higher. When a strata tells you a job is “estimated at” something, that history is your reason to ask what the estimate is based on, who prepared it, and when.

What you can see from the street — and what it doesn’t prove

There are visible clues. Treat them as reasons to look harder, not as answers.

Feel under the bottom edge of the cladding. A rainscreen assembly has a drainage gap at its base. Home inspectors who work on these buildings describe the tactile check as the more dependable of the two clues here: if your fingers find a vented cavity, water has somewhere to go.

Look for horizontal flashings between floors. On a remediated stucco building you will often see horizontal metal flashings dividing the wall into storey-height sections. That banding frequently accompanies rainscreen work.

Now the caveats, because they matter more than the clues. Horizontal plank cladding — vinyl, fibre cement, wood — has an air gap by its nature, so a gap there tells you nothing about a remediation project. The absence of visible flashings is not proof of anything either; it is simply the absence of one clue. And partial remediation is common: a strata fixes the two worst elevations and defers the rest, so a building can be genuinely rainscreened on the south face and untouched on the north. Walk all four sides.

Age alone is too blunt a filter in either direction. Plenty of 1990s buildings were remediated years ago and are now the safer buy on the street. What settles the question is the paperwork, not the appearance.

Then confirm it in the permit record. A full re-clad is a substantial job and it required a building permit. The District of North Vancouver’s permit search is free and public; the City of North Vancouver publishes permit records with construction values; West Vancouver sells a Comfort Letter that reaches back decades. A large envelope permit in the record is strong confirmation that the work happened, and roughly when.

The warranty trap almost nobody knows about

Here is the sentence that catches people:

“It was rainscreened in 2019, so it’s still under warranty.”

Very often, it is not.

BC does have a warranty scheme for envelope renovations, under the Building Envelope Renovation Regulation. Where it applies, it requires at least 2 years on materials and labour and at least 5 years of water penetration cover on the building envelope, both running from substantial completion of the work — and the 5-year cover need not extend to parts of the cladding that were not part of the renovation. There is no 10-year structural component; that belongs to new-home warranty, which is a different thing.

It only bites when the job is big enough. The renovation has to replace 60% or more of the cladding surface of the building or of one full face of it, and cost at least the greater of $10,000 or $2,000 per dwelling unit. In a 40-unit building that second test is $80,000, not $10,000 — a detail that is very commonly stated wrongly.

And then there is the exemption. The regulation does not apply at all to a multi-unit building in which first occupancy of a dwelling unit happened 25 or more years before the earlier of two dates: the start of the renovation, or the issuing of the building permit for it.

Work that through. A building first occupied in 1993, permitted for a re-clad in 2019, is 26 years past first occupancy. The statutory warranty does not apply. The buildings most likely to need remediation are, by the arithmetic, the ones most likely to fall outside the warranty that would have covered it.

So do not accept “it’s under warranty” as an answer. Ask for the certificate. If a repair warranty exists there is a document, and someone can produce it. If nobody can, there isn’t one — and if the remediation later proves defective, the cost lands back on the owners.

What the strata documents will and won’t show you

The Form B Information Certificate is the document buyers lean on, and it does a lot. It discloses special levies that have already been approved, gives notice of resolutions that have been proposed but not yet voted on, sets out the contingency reserve balance, and attaches the most recent depreciation report along with any electrical planning report.

What it does not do is surface a building envelope consultant’s report that nobody has put to a vote. There is no line on the form for it. A strata can be entirely compliant on its Form B with an engineer’s assessment of a failing envelope sitting in the council file, because the money has not been proposed yet.

That gap is the whole ballgame, and the way through it is to ask for the records directly rather than relying on the certificate. Ask for these by name:

• Any building envelope condition assessment, engineering report or consultant’s report — name the documents. “Reports” invites a narrow reading.
• The depreciation report, and specifically what it says about cladding, windows and the envelope, with its funding model and its date.
• Council and general meeting minutes, two years minimum — and read them oldest first. Envelope work announces itself early. It appears as a question, then a quote, then a proposal, then a levy. By the time the word “levy” shows up you are reading the end of the story.
• Any past remediation records, plus the repair warranty certificate if one is claimed.
• Any engineering or depreciation report referenced in the minutes but not included in the package you were given.

On depreciation reports specifically, the rules tightened recently. Since 1 July 2024 stratas of five or more lots must obtain one on a five-year cycle and can no longer vote each year to defer it. Stratas in Metro Vancouver, the Fraser Valley and the Capital Region had to have a current report by 1 July 2026; elsewhere in the province the deadline is 1 July 2027. A missing or stale report is now itself a piece of information about how the building is run.

Why there is no list you can just look up

Buyers reasonably ask whether somebody keeps a register of which buildings leaked. Nobody does, and the reason is worth understanding.

Envelope disputes between owners and warranty insurers have been fought in this province for twenty years, and the significant ones tend to end the same way: a confidential settlement, often on the eve of trial. Confidential means no published number, no precedent, and no answer that carries over to the next building. Meanwhile the buildings themselves change hands, get remediated in stages, and are described differently by every party with an interest in them.

Which is precisely why the checking happens building by building, before you buy, and not after.

The short version

1. If it is wood-frame and built between 1985 and 2000, treat the envelope as the main question, ahead of everything else you like about the place.
2. Use the visible clues to prompt a closer look, not to reach a conclusion — and walk all four sides, because partial remediation is normal.
3. Confirm any re-clad in the municipal permit record. That work required a permit.
4. If remediation is claimed, ask for the repair warranty certificate — and check first occupancy against the permit date, because 25 years apart means no statutory warranty at all.
5. Ask for engineering reports by name. The Form B will not surface one that has not been put to a vote.
6. Read the minutes oldest first and look for the recurring topic rather than the alarming one.

None of this makes a 1990s building a bad buy. A properly remediated one is often the better value on the street: the expensive problem has been found, paid for, and priced in. The dangerous building is the one where nobody asked.

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Read next

• How to check a property’s permit history in North and West Vancouver — how to run each municipality’s search, what it costs, and who to call.
• Strata depreciation reports: what North Shore buyers should ask for — how to read the funding model, and what the new deadlines changed.
• What actually breaks in an older North Shore house — the same question for detached homes.
• Buried oil tanks: what to check before you buy an older North Shore house — who to call, what a scan costs, and why no municipality regulates it any more.
• Can someone build out your view? — what actually protects a view, how height is measured, and why there may be no public hearing.
• How many homes can you build on your North Shore lot? — the new provincial rules, where each municipality stands, and which lots are exempt.

Costs here are drawn from published Homeowner Protection Office consultant data and reported project figures, and they are a guide for budgeting rather than a quote. Regulations change: confirm current requirements with the municipality or with your lawyer before relying on anything on this page. Last reviewed September 2026.

Written by Tom Jahed, licensed REALTOR®, Vanak International Properties, North Vancouver.