So, during the Imperial era Rome got up above a million people (apparently even passing 1.6 million at times), however by the Medieval period the population fell as low as 17 000. What I was wondering is what was property ownership like? Did people clump in a few areas with most of the city empty, or did families claim whole city blocks for their own use? Was most of the city owned by the Church or something? It just seems fascinating to think about a city that built up and that empty.