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Why Doormath is more precise than a neighborhood average

A neighborhood average can be a rough benchmark, but it often misses what truly moves price: street-level differences and the separation between location value and property features.

• Average ≠ market reality.
• Street-level effects matter (traffic, noise, views, proximity).
• We separate location value from property features to avoid mixing causes.

How Doormath estimates home value in Québec

The estimate is built from official sources and real transactions, then refined with Doormath-exclusive layers and validated user corrections.

• Municipal data (assessment roll)
• Real closed transactions (sold prices)
• Exclusive Doormath data:
  • Detailed renovation levels
  • Waterfront / water access
  • High-traffic streets
  • Intra-neighborhood micro-location
• User contributions and corrections

Real estate micro-location: why one street can be worth more than another

Micro-location is the street-level component of value. Within the same area, nearby blocks can trade at different price levels even before you consider renovations or size.

Example screenshot: the map highlights micro-location differences across nearby blocks.

Proof lives on the interactive property value map.

Market value vs municipal assessment in Québec: what’s the difference?

In Québec, the municipal assessment (évaluation municipale) is mainly an administrative value used for taxation. It’s updated on a schedule and can lag the real market by months or years, especially during rapid changes in interest rates or buyer demand. Market value, on the other hand, is what a typical buyer would pay today under normal conditions.

That’s why two homes with similar municipal assessments can sell for very different prices. Micro-location, layout, and condition can move the price a lot—and the market itself can shift over time.

It takes more than a few comps to appraise a property

Why Centris prices aren’t enough to estimate a home: Centris is a listing platform. Asking prices are not sold prices, and listings can be optimized for marketing (photos, staging, timing).

Even if you find “similar” homes, you still need to adjust for (1) time (a sale from last year isn’t today’s market), (2) each characteristic (what is a garage worth here, at this price point?), and (3) size (price-per-sqft is not linear—300→400 sq ft doesn’t behave like 2000→2100 sq ft).

Doormath bakes those adjustments into the estimate. Instead of forcing you to hand-pick a few examples, you enter the right facts (micro-location, size/layout, and a detailed renovation level) and the price updates live.

Place a home within its market sector

An estimate alone is incomplete without market context. Sector-level dispersion helps you interpret what’s typical vs exceptional for similar homes.

Add context with Québec real estate sector statistics.

What data Doormath relies on

We try to be explicit about inputs so you can interpret the estimate appropriately.

• Official municipal data
• Closed transactions
• Exclusive Doormath data
• Validated contributions