Your Calgary property assessment is the City of Calgary's estimate of your home's value as of July 1 of the previous year, used only to divide the municipal and education tax bill fairly across property owners. It is not the same as what your home would actually sell for on today's market.
Every January, Calgary homeowners open an envelope (or an eNotice email) with a single dollar figure on it and immediately ask two questions: what does this number actually mean, and does it match what my house is worth? The honest answer is that your assessment and your market value are calculated for entirely different purposes, using different information, on different timelines. Understanding that gap is the key to reading your notice correctly — and to knowing whether you should appeal it, worry about it, or simply file it away.
What Is a Property Assessment in Calgary?
A property assessment is the City of Calgary's official valuation of your home, prepared once a year for one purpose: to divide the total property tax levy fairly among every property owner in the city. The City doesn't set your assessment based on what it thinks you could sell your home for tomorrow — it uses a mass appraisal process that looks backward at market activity and physical property details as of set dates, then applies that methodology consistently across hundreds of thousands of properties.
Your assessed value is based on three inputs:
Market conditions as of July 1 of the previous year — sale prices of comparable properties across your community during that window
Physical characteristics as of December 31 of the previous year — square footage, age, condition, lot size, and any completed renovations or additions
Comparable sales in your area — the City groups similar properties together and values them using consistent, defensible criteria
Because that valuation date sits, at best, six to eighteen months in the rear-view mirror by the time you open your notice, your assessment is always describing a market that has already moved on.
Calgary Property Assessment vs. Market Value: What's the Difference?
This is the single most common point of confusion for Calgary homeowners, and it's worth putting side by side.
As one real-world reference point: CREB® reported a citywide unadjusted residential benchmark price of $570,500 in May 2026 — down roughly 3% year-over-year (per CREB, May 2026). Your City assessment for the current tax year was set using market data from well before that report existed, which is exactly why a homeowner's assessed value and a REALTOR®'s recommended list price can land in noticeably different places. For a deeper look at why these two numbers rarely match, see our companion post, Calgary Property Assessment vs. Market Value: Why They're Not the Same Thing.
Does a Higher Assessment Mean Higher Property Taxes?
Not automatically — and this is where a lot of homeowners get anxious for no reason. Your property tax is calculated as:
Assessed Value × Total Tax Rate = Property Taxes Owed
The tax rate itself is set separately every year, combining Calgary's municipal budget requirements with Alberta's provincial education requisition. So the real question isn't "did my assessment go up?" — it's "did my assessment go up by more or less than the city-wide average?"
If your assessed value increased more than the typical Calgary home, your share of the total tax levy grows, and your bill likely rises faster than average.
If your assessed value increased less than the typical Calgary home (or dropped), your relative share shrinks, and your bill may hold steady or even fall — even in a year when the overall tax rate goes up.
This is also why a flat or falling assessment doesn't guarantee a lower tax bill: if City Council raises the tax rate to cover budget needs, your bill can still climb even though your assessed value didn't move much. Because this interplay between assessment growth, tax rates, and your final bill trips up so many homeowners, our companion Calgary Property Tax Guide walks through the calculation in full, with worked examples specific to Calgary's current tax rate.
Why Did My Assessment Change This Year?
A change in your assessed value usually comes from one (or a combination) of these:
Neighbourhood-wide sales activity — if comparable homes in your community sold for more (or less) during the prior July-to-July window, your assessment shifts to reflect it
Physical changes to your property — a finished basement, a new garage, an addition, or a major renovation completed by December 31 of the prior year will be picked up
Reassessment corrections — occasionally the City updates data (lot size, structure details) that hadn't been accurately reflected before
City-wide market trends — broad shifts in Calgary's housing market get distributed across assessments, though not evenly across every community or property type
If your assessment jumped well above what similar homes on your street appear to be assessed at, that's worth a closer look — not because it changes your home's real value, but because it directly affects your share of the tax levy.
How to View Your Calgary Property Assessment
The City of Calgary mails property assessment notices in early January each year (per City of Calgary). To see the full detail behind your number:
Go to myTax Calgary at mytax.calgary.ca
Sign in with a myID account, or create one if you haven't already
Link your property using its roll number and access code (found on your assessment notice)
Once linked, you can view your Property Detail report, which includes your assessed value, the physical characteristics the City used, and comparison data for similar properties
You can also sign up for eNotice through the same portal to receive future notices electronically and access past years' assessments — useful if you're tracking how your assessed value has trended over several years.
Should You Appeal Your Property Assessment?
If you believe the City has the wrong information about your home — an incorrect square footage, a renovation that was never actually completed, a feature that doesn't exist — it's worth reviewing before you accept the number at face value. The general process (per City of Calgary):
Review your Property Detail report through myTax and check the physical characteristics against your actual property
Contact the City of Calgary Assessment & Tax department to ask questions or request a correction before filing a formal complaint — call 311 within Calgary, or 403-268-CITY (2489) from outside the city, Monday to Friday, 8 a.m. to 4:30 p.m. In-person help is available at the Assessment & Tax counter, 3rd floor, Calgary Municipal Building, 800 Macleod Trail S.E.
File a formal complaint with the Assessment Review Board if the issue isn't resolved through the Customer Review Period. Historically, this window has run roughly 67 days from when notices are mailed (ending around late March), but the exact deadline is printed directly on your current-year notice and confirmed at calgary.ca — always check that date rather than relying on last year's timeline.
Keep in mind: appealing your assessment can only change what you pay in tax relative to your neighbours. It has no bearing on what your home would actually sell for — that's a separate question entirely.
What Is Your Home Actually Worth Right Now?
Your City of Calgary assessment tells you almost nothing about what buyers would pay for your home today. It's built on data that's already out of date by the time you read it, and it doesn't account for your specific renovations, your street's desirability, or how your home shows compared to what's currently competing for buyers.
If you're planning to sell, refinance, or simply want to understand where your home stands in Calgary's current market, a REALTOR®'s market evaluation — grounded in active listings, recent comparable sales, and your home's actual condition — will tell you far more than your assessment notice ever could. Get your home's real, current market value here →
Frequently Asked Questions
What is a property assessment in Calgary?
A property assessment in Calgary is the City's annual estimate of your home's value, used solely to divide the total municipal and education property tax levy fairly across all property owners. It's based on market conditions as of July 1 of the previous year and your property's physical characteristics as of December 31 of the previous year — it is not an estimate of what your home would sell for today.
How can I view my Calgary property assessment?
You can view your Calgary property assessment by signing in to myTax Calgary at mytax.calgary.ca with a myID account, then linking your property using the roll number and access code printed on your assessment notice. Once linked, you'll see your assessed value along with the full Property Detail report the City used to calculate it.
How do I find the assessed value of my property in Alberta?
In Calgary, the fastest way to find your assessed value is through the City's myTax portal at mytax.calgary.ca, after creating a myID account and linking your property's roll number. Your assessed value also appears directly on the paper or eNotice assessment notice mailed by the City of Calgary each January.
Does a higher property assessment mean my taxes will go up?
Not necessarily. Your tax bill depends on how your assessed value changed relative to the city-wide average, combined with the tax rate set for that year. If your assessment rose more than the typical Calgary home, your bill likely rises faster than average; if it rose less (or fell), your relative share of the tax levy can hold steady or even shrink.
Why did my Calgary property assessment change from last year?
Your assessment can change due to comparable sales activity in your community during the prior July-to-July window, physical changes to your property (renovations, additions) completed by the previous December 31, corrections to the City's property data, or broader shifts in Calgary's housing market.
Is my property assessment the same as my home's market value?
No. Your assessment is a backward-looking figure used only to calculate property tax, based on data that can be six to eighteen months old by the time you receive your notice. Your home's actual market value reflects current buyer demand, recent comparable sales, and your property's present condition — which is why the two numbers rarely match.
How do I contact Calgary property assessment?
You can reach the City of Calgary's Assessment & Tax department by calling 311 within Calgary, or 403-268-CITY (2489) from outside the city, Monday to Friday from 8 a.m. to 4:30 p.m. In-person assistance is available at the Assessment & Tax counter on the 3rd floor of the Calgary Municipal Building, 800 Macleod Trail S.E.
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About the Author
Stuart Bartwicki is a REALTOR® with CIR Realty in Calgary, Alberta. A former teacher turned real estate advisor, Stuart has been helping Calgary families buy and sell with clarity and confidence since 2018. Because a City of Calgary assessment notice and a home's real market value are two very different numbers, Stuart regularly helps Calgary homeowners make sense of their assessment and understand what their property is actually worth today. His approach is simple: educate first, so every decision feels like the right one. Learn more about Stuart → or book a strategy call.
