Kind of depends on your definition of "overestimated". Median home ownership tenure is around 13yrs, so I know 50% are lower, for whatever reason. Also I think HT'ers tend to be more anchored, so it skews views a little. But my view may be skewed as well. In 30+ I have never lived in the same house more than 12yrs, so I let the data speak.
Everything about RE is very specific to location, but to get rent to your mortgage in 5 yrs would take an annualized inflation rate of 6% or more. You can check the OER portion of CPI and it will show few times that has happened. I admit I have some problems with the data because they are not normalized to sq ft, but the premium of homeownership to rent is typically 1.3-1.4, although the chart below makes me think it is higher at present. Like everything in life, your return all depends on the timing.
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