Please, the densities seen at the top of that list are really inhumane, more like prison camps than cities.
Also, increasing density might be easy if you demolish 100 single family homes to build 10 five-stories buildings, but replacing Barcelona's 5-6 stories blocks with 10-stories ones isn't going to be economically viable. And if some brave developer tries this, then the resulting apartments won't be cheap.
Also, increasing density might be easy if you demolish 100 single family homes to build 10 five-stories buildings, but replacing Barcelona's 5-6 stories blocks with 10-stories ones isn't going to be economically viable. And if some brave developer tries this, then the resulting apartments won't be cheap.