What Denman property taxes really cost — and what the buildings are worth

2026-05-31

Shortly after we launched estimated property taxes on every lot, a reader checked two of their own properties and told us our numbers were far too low — one bill was over $15,000 where we'd estimated about $6,500. They were right, and finding out why made the whole estimate better.

Bug one: we left out the service areas

A rural Denman tax bill isn't one rate. It's a stack: the provincial rural and school taxes, the regional hospital, the Islands Trust, policing — and then a long list of local service areas that fund the things the island actually uses. We had included the first group but left out the second. On Denman those service areas are not a rounding error:

• Denman Island Fire Protection — $0.667 per $1,000
• Community Parks — $0.185 · Garbage — $0.177 · VI Regional Library — $0.161
• Community Facilities — $0.110 · CVRD Denman/Hornby — $0.113
• plus Recreation, regional solid waste, 911, Economic Development, Grant, Heritage and Feasibility levies

Added up, the real residential rate is about $4.64 per $1,000 — not the $2.94 we'd used. That's roughly 58% higher, and it brought that reader's lot from $6,500 to about $10,200. (The rest of their bill is because their home spans more than one legal lot — and our page estimates one lot at a time.)

Bug two: not every lot is residential

Their second property, a commercial lot, was even further off — because BC Assessment's public page doesn't tell us a property's class, and we'd assumed residential for everyone. Business-class property on Denman is taxed at about $13.34 per $1,000 — nearly three times the residential rate. We now publish the full per-class rate table and flag where the class assumption matters.

And while we were in there: DenmanValue

Fixing the taxes pushed us to finish something we'd been building: an independent estimate of what a property is actually worth. We call it DenmanValue. It takes BC Assessment's land value and adds the building value implied by the real building footprint we measure from satellite imagery — and we use whichever is larger, the measured value or the reported one.

Why? Because across the island we count 2,648 structures on 1,799 lots, and 519 lots with two or more buildings — and the assessment record frequently shows fewer or smaller buildings than are really there. When we value the buildings at what we can measure, the gap adds up to an estimated ~$320,000 a year in property tax that isn't being collected on under-reported improvements alone — before you even get to farm-class land.

What's fair to say — and what isn't

These are estimates, clearly labelled, not bills or appraisals, and not accusations. Under-reporting is usually BC Assessment's record lagging reality, not wrongdoing by an owner. Farm-class assessment is legal and often appropriate. Our job is to show the public record plainly, with the math in the open and a source on every figure — and to fix our mistakes in public when a neighbour catches one. Thank you to the reader who did.