https://www.trulia.com/local/jersey-city-nj/type:home_prices_sales_sqft_affordability looks rather useful as a comparison. If the data underestimates reality, then presumably it underestimates all areas, so the comparison is less affected.

It also shows crime statistics. I guess it doesn’t capture the unreported “sense of street safety” and cleanliness.

The other heat maps are probably less consistent with local observations.

389 Washington 2008 building was selling for $700k/756 sqf