Housing in Ajax

Ajax is sixty-five per cent detached and unusually consistent: more than a third of everything standing went up between 1981 and 2000 and another quarter between 2001 and 2010. Very little is old, at seven per cent before 1961. Consistency is useful when you are reading comparable sales, and it means the mechanical questions cluster by subdivision rather than by street.

Ajax, in the GTAExplore on Google Maps

People: 126,666
Households: 39,490
Median dwelling value: $850K
Median household income: $119K

What stands out about Ajax

14% of its housing has gone up since 2011, in line with the middle of the 23 municipalities of the GTA at 18%.
8% of its commuters travel by transit, in line with the middle of the 23 municipalities of the GTA at 5%.

What is built here

Detached house: 65%25,560
Semi-detached house: 6%2,265
Row house: 15%6,020
Duplex: 4%1,385
Apartment, under five storeys: 4%1,610
Apartment, five storeys or more: 7%2,635

And how many bedrooms it has

One bedroom: 4%1,720
Two bedrooms: 10%4,120
Three bedrooms: 40%15,720
Four or more bedrooms: 45%17,825

When it was built

The most useful line on this page. Almost everything a home inspection turns up in Ajax is a function of the decade the house went up in, and so is most of what an insurer asks about.

1960 or before: 7%2,765
1961 to 1980: 16%6,345
1981 to 2000: 36%14,160
2001 to 2010: 27%10,610
2011 to 2021: 14%5,605

What to check before you buy in Ajax

Raised by the housing stock above, not by any particular house. Each one is a question to ask rather than a problem to expect.

Kitec fittings, if it was plumbed in the late 1990s or 2000sA fifth or more of the housing here dates from the years when Kitec plumbing was installed. The fittings are usually brass in orange or blue pipe, most visible under a sink or at the water heater. It was the subject of a class action settlement and it is something a condominium corporation will know about its own building.
What was added, and whether it was permittedIn a neighbourhood this detached, a large share of the houses have been added to or finished below grade at some point. The City's building records will say what was permitted. An unpermitted addition is not automatically a problem to walk away from, but it is a problem to know about rather than inherit.
The party wall and the drainsA fifth or more of the housing here shares a wall with the house next door. Shared walls mean shared sound, sometimes shared drains, and occasionally a shared roof line where one side has been redone and the other has not. Look at both sides of the building from the street and from the lane.

What it costs to live here

Owner monthly shelter cost: $2,140
Renter monthly shelter cost: $1,600
Owners with a mortgage: 74%
Households renting: 17%

Shelter cost is the census measure: for an owner it is the mortgage payment, property taxes, condominium fees and utilities together, and for a renter it is rent and utilities. These are medians from 2021, so read them as the shape of the place rather than as a quote.

How people get to work

Car, truck or van: 87%34,535
Public transit: 8%3,170
Walked: 2%980

Where these numbers come from

the 2021 Census of Population, tabulated by the Statistics Canada as Census Profile, 2021 Census of Population, with neighbourhood names and boundaries from 2021 Census Subdivision Cartographic Boundary File. Retrieved September 20, 2026. The City publishes both packages with their licence recorded as "Statistics Canada Open Licence".

These are aggregate figures for a whole neighbourhood from a census taken in 2021, so they lag the market and they describe no individual home. Housey is not a real estate board and this is not MLS data: for what a specific house is worth today, ask a realtor.