So home prices went up from 47.2k to over 400k+. That would be a 800%+ increase?
According to your link, house prices were $73,600 in 1980 and now $525,000, an increase of 613% which far outpaces CPI, and far less than 1184% for tuition increases. I know this isn't what you asked, but comparing house prices to tuition is apples to oranges, CPI's measurement of housing costs is a much better measurement of what families actually need to spend for housing.