Earlier quoted context omitted.
Wikipedia: "A commodity is an economic good (...) that has full or substantial fungibility. (...)" On the basis of geography alone, housing can not be a commodity.
Eh I see your point but I disagree. Look for housing in a highly competitive city, and soon enough you stop caring about geographical specifics and instead look for some combination of useful attributes. In practice, that's fungibility.
That's why houses a priced individually. When you go to the grocery store, they don't individually price each cob of corn. There might be two different buckets with a differentiator (organic vs non organic), but within the bucket each cob is fungible. It doesn't matter which one you grab.
Each house gets its own bucket.