There are a far higher proportion of properties empty in Paris than in London. As the number sleeping rough has declined in the British capital, it has climbed in the French capital.
You would think that if there were a lot of vacancies prices would go down. After all, an empty apartment is not bringing in any money at all.
What, aside from simple greed and horny landlords is keeping the prices high? Or do they mean empty in the sense of vacant lots?
Probably rent control. It tends to drive out affordable housing.