-- If housing price can be made to be 15x the average annual income, --
Back of the envelope it looks like it would take about 110% of your income just to pay the principal and interest, let alone taxes and insurance. That's a pretty good trick.
If you make say, $30,000, no way they even let you in the door to look at a $450,000, let alone buy it. $120,000 would be a stretch unless you have a decent down payment. Sorry, no free pie in the sky.