It is a comparison tool, not a valuation. Held very tight it is genuinely useful. Stretched even slightly, it produces confident wrong answers.
It earns its keep when the two things compared are nearly identical: two units in one building on different floors, two of the same builder model in one phase, two similar bungalows on a block. Held that tight, a gap in the per-foot number is real information.
Price per square foot is a tiebreaker between near-identical homes. Used to compare a bungalow to a two-storey, or an inner-city infill to a suburban home, it delivers a confident answer that is simply wrong.
Comparable sales, adjusted. Not what similar homes are asking — what they sold for, same property type, close by, recent enough to reflect current conditions, then adjusted for the differences you can see. Sold prices require a free registered account under Alberta's MLS® data rules.
That is more work than dividing two numbers, which is why per-foot pricing stays popular. Use it as a sanity check that flags a listing worth a second look, then set it down. How far back comparables should go →