It's especially good to say "housing bubble" because it sounds smart as a market analysis from someone who has a lot of data, and it can only be proven wrong years later (when the comment is long gone) when the bubble is not burst, proving the new housing prices just reflect your neighbors' average wealth. "but the bubble is around the corner", they'll still say. Every city in the world.
Housing prices grow according to people's wealth; there are also more and more people in every city, that increases the pressure on prices and it's rarely a bubble.