Where Airdrie is still a grid setup the yards are mostly large. Actual properties are 25'x120' for the most part but some are close to 170' deep in one area. Most those properties are also at least 50' wide so that part does have big bag yards lol.
I know of one property in that area that is 175'x120'. Looks like 2 houses on the property but the second is just his garage.
Airdries growth was much to low in the early years to have had the grid grow out more than the village area. Now a days we get a couple new subdivisions every few years. This year alone I think there will be 3-5 new ones starting development. No grid layout but houses you can touch on both sides and no fire resistant materials between them!
Here is that property,
https://www.google.ca/maps/@51.29142...7i13312!8i6656