Do you think all those houses that the Boomers currently live in will remain empty, and therefore the housing prices will fall?
If you think that, I have a lovely bridge for you.
House prices are caused by supply and demand. The population is constantly growing, Millennials, Boomers, Gen-Xs, and all. There is no way that house prices will fall to any great extent because there is always a shortage of housing. A couple of Boomers die, so what? Their places, and a lot more, are taken up by people coming into the country, or being born, every day.
And for every thousand extra people, we're going to need an extra 400 houses.