Dreammaker
Songster
If property size is a concern, you may want to consider having the coop and run attached and under one roof and raising the actual hen house itself off the ground 18-24" so that they have extra run space under there. It will add a good amount of space without adding more to the overall footprint.I am in central Ontario.
I'm glad to know that too big isn't a thing! But I do have to be mindful of space. I have less than a quarter acre (including my house) and I don't want to use the entire backyard.
Another concern with the cold is freeze-thaw cycles. I've battled this the past few months and because part of my run is on a downward slope, I get several areas of water that builds up (happens to a lesser extent with bad rain). So, take your terrain into account when planning and try to avoid placing it at the bottom of a slope, if possible.