Nah. China's urbanization rate is currently 65%. South Korea for comparison has 82% urbanization rate. So the Chinese have plenty more (say, a hundred million or so more) homes to build. The current difficulties are more to do with (i) loss of consumer confidence caused by the leadership's bad economic management, and (ii) the deliberate restriction of credit to developers because of the government's concerns about debt.
This analysis reminds me of the hoo-hah about China's "ghost cities" circa 2010. Those ghost cities ended up being filled up.