Is my Calgary property over-assessed?
Short answer. Compare your assessed value against homes in your own community with a similar lot size and year built: if you are assessed materially above genuinely comparable properties, that is an equity argument — but Calgary's open roll records no floor area, so a larger home and an over-assessed one look identical in it.
What a real comparison needs
An equity comparison is not your house against the city, or against last year. It is your house against properties a reasonable assessor would agree are like yours.
- The same community, not merely the same quadrant.
- A similar lot size — land is a large share of the assessed value.
- A similar year built, which stands in for construction type and condition.
- Enough of them. A handful of neighbours is anecdote, not a distribution.
The limit nobody mentions
Calgary's open assessment roll has no building-area field. Two homes on identical lots, built the same year, one 1,100 square feet and one 2,400, appear the same in the public data. So when a home is assessed above its comparables, the open roll cannot distinguish 'over-assessed' from 'simply larger'.
This matters most for the homes where the stakes are highest. An assessment well above the community median is exactly the case where the missing field does the most damage, and it is why this site flags those separately instead of calling them a strong case.
What we could not make work, and are telling you anyway
We tested our own scoring against 1,685 real 2025 Assessment Review Board records to see whether the homes it flags actually win more often. They do not: flagged homes succeeded at about the same rate as everyone else who filed (p = 0.61). The comparison is still worth having — it tells you whether there is an argument to make — but it is not a prediction, and anyone selling you one from public data is overstating what the data holds.
Questions
- How do I know if my Calgary assessment is too high?
- Compare it against homes in the same community with a similar lot size and year built. If you sit materially above that group, you have an equity argument. Because the public roll records no floor area, a sizeable home can look over-assessed when it is not.
- Does the City of Calgary publish assessed values?
- Yes. The residential assessment roll is published as open data, which is what makes an equity comparison possible without paying anyone for the underlying figures.
- Can a tool predict whether I will win my assessment appeal?
- Not from public data. We validated our own scoring against 1,685 real 2025 complaint outcomes and it carried no signal about who wins (p = 0.61). What the records do support is the base rate: 70% of those who filed got a reduction.
Check your own address
The lookup compares your assessed value against genuinely comparable homes in your community — and tells you when the public data cannot settle it.
Last reviewed 2026-09-22. Sources and method: what the complaint records show.