Generally, you're actually looking for homebuilders, not developers, unless you're looking for custom infill homes or condos, which I gather you aren't.
In some cases, a developer will have links on their websites as to which homebuilders are building (or have built) in the communities they are developing. Some developers have a homebuilder arm to their company.
A good start would be Googling "homebuilder Calgary."
Also, I must suggest against Airdrie.
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