[happyopossum]

That is highly location dependent. Many cities had/have large lots in older neighborhoods and have transitioned to zero-lot-line construction or smaller lots in the past 30-40 years as demand for housing grew.

In fact in most of the western US that’s the norm…

[jimnotgym]

The UKs green belt laws haven't helped here. Since you can't make the settlement bigger, the only course is to build in the gardens of houses with big gardens. In my view it has ruined many nice villages