Why Do Different Websites Show Different Home Prices for the Same Town?

The Short Answer

Different websites can show different home prices for the same town because they may use different reporting periods, geographic boundaries, property types, and definitions of price. A finalized TRREB monthly average and a portal’s frequently updated estimate can both be useful, but they are not interchangeable. Before using a number to price or buy a home, check what it measures, when it was calculated, and which homes it includes.

This matters in York Region and South Simcoe because a figure for “Newmarket,” “Bradford,” or “Simcoe County” may reflect a different mix of homes and a different time period than the homes a buyer or seller is actually comparing.

TRREB Monthly Averages vs. Frequently Updated Portal Figures

How TRREB Calculates Its Monthly Average

TRREB’s monthly Market Watch data is a verified, clearly dated summary of closed MLS® sales reported through its system. It is useful for following monthly and year-over-year market trends, provided you compare the same geography, property type, and reporting period.

For example, the July 2026 Market Watch report gives a defined York Region snapshot for a completed calendar month. It is not an estimate of what every individual home is worth today.

How Portal Estimates and Recent-Period Figures Work

Many portals display a frequently updated estimate or recent-period average rather than a finalized calendar-month report. The exact methodology, data coverage, and update timing vary by platform, so check the source’s methodology before comparing its figure directly with TRREB’s monthly report.

A portal figure can be useful as a current signal, but it should not be read as the same measurement as a completed, clearly dated monthly sales report.

Why Zolo, HouseSigma, and TRREB Can Show Different Numbers

Different Geographic Boundaries

One source may use a municipality’s formal boundary while another uses a broader neighbourhood, a postal area, or a portal-defined search area. If two sites are not measuring the same collection of homes, their averages can differ even when both calculations are mathematically correct.

Different Property-Type Mix

Averages change with the homes that sold. A report that includes condos, townhouses, rural properties, and detached homes will produce a different figure from one focused on a single property type. This is why a town-wide average may be a poor guide for a specific semi-detached home, condo, or rural property.

Asking Price vs. Sold Price

A current listing average and a closed-sale average answer different questions. An asking price reflects what sellers hope to achieve. A sold price reflects what buyers actually paid after negotiation and conditions. Check which one you are looking at before comparing it with another figure.

Why Your Home Has Different Online Estimates

Online estimates can differ materially, especially for unique homes, rural properties, recently renovated homes, and areas with fewer comparable sales. Each platform uses its own model and available data, so the estimate should be treated as a starting point, not an appraisal or a recommended list price.

A model cannot fully assess the condition of a home, the quality of upgrades, the appeal of a particular street, the effect of a ravine lot, or the active listings competing for the same buyer today.

Why Average Prices Can Mislead

Averages can move because the mix of homes sold changes, not necessarily because the value of every home changed.

Imagine a small community where four townhouses sell for $800,000 and one luxury detached home sells for $3,000,000. The average is $1,240,000, but that number does not tell a townhouse owner what their property is worth or a luxury buyer what they should expect to pay.

For an individual home, recent comparable sales, current competing listings, property type, condition, lot, location, and timing matter more than a town-wide average.

Which Home-Price Figure Should You Use?

Use the figure that fits the question.

• For monthly or year-over-year market trends: start with a clearly dated TRREB report and compare the same geography and property type.
• For a recent market signal: use a portal figure carefully, after checking what it includes and how it is calculated.
• For a sale or purchase decision: use recent comparable sales and current active competition in the relevant neighbourhood and price range.

If you are considering a sale or purchase, a current comparative market analysis can estimate a realistic value range using recent comparable sales, active competition, and your home’s condition and location. It is a better starting point than treating an online estimate or community average as exact.

Frequently Asked Questions

Why do different websites show different home prices for the same town?

Different sites can use different reporting periods, geographic boundaries, property-type mixes, and definitions of price. TRREB monthly figures summarize completed MLS® sales for a defined reporting period, while a portal may show a frequently updated estimate or recent-period figure using its own methodology.

Why does my home show different values on different websites?

Each platform uses its own data, model, and update process. Online estimates can be a helpful starting point, but they cannot fully account for renovations, condition, street appeal, lot characteristics, or the homes currently competing for the same buyer.

Is the lower number or the higher number more accurate?

Neither is automatically more accurate. The useful question is what each number measures and whether it is based on comparable closed sales, active listings, a town-wide average, or a model-generated estimate. For your home, a current comparative market analysis is more relevant than either generic figure.

Can I use online estimates to set my asking price?

Online estimates are useful for rough orientation, but they are not reliable enough to set a listing price on their own. A pricing strategy should consider recent comparable sales, active competition, your home’s condition and location, and the buyer response in its specific price range.

Which home-price metric is best: average, median, or benchmark?

No single metric is best for every question. Average price can be affected by the mix of homes sold, especially luxury sales. Median price shows the midpoint sale in a period, while a benchmark index is designed to track a typical home over time. For a specific property, recent comparable sales and current competing listings matter more than any town-wide metric.

Why did my town’s average price change so much in one month?

A large monthly move can reflect a change in the homes that sold rather than a broad change in the value of every home. A month with several luxury detached sales can raise the average, while a month dominated by condo or townhouse sales can lower it. Compare property types, sales volume, median or benchmark measures, and several months of data before drawing a conclusion.

Sources and Next Steps

Last updated: August 2026. For current official local context, read the July 2026 York Region and South Simcoe Market Update and the TRREB Market Watch reports. If you are selling, this related guide explains why a home may not be selling.

If you are considering a sale or purchase, use two or three measurements together: the current market report, relevant comparable sales, and the active homes buyers can choose today. Then decide what the information means for your specific property and timing.

Request a focused, data-informed pricing review or book a 15-minute conversation to discuss the current options without pressure.