House prices have increased so much over the past five years, the average homeowner has pocketed more each year in potential capital gains than the typical worker gets before tax, Newshub reveals. “If we compare the national average asking price to five years ago, homeowners have made an average of $311,450 on their property,” said Gavin Lloyd, Trade Me property sales director. The new average is $936,150, nearly nine times the average household income.