Treat your house as a place to live, not as a get rich quick scheme. The rise in home values has gotta plateau, and it might happen sooner rather then later. This still means 'buy a house!' but it doesn't mean that buying a house = 'We're in the money!'
Buy it as a smart money, place to live thing. If it goes up in value, super. But don't depend on it for at least 10 years.
Something to consider, the rest of yous all... home values have risen on an average of (adjusted for inflation) 1% a year over the last 40 years. Last year, the values went up 15%. Based on historical performance, betting that the current increase in values is gonna continue indefinately is probably foolish, definately optimistic.