Is it a common practice to do this? I recently read a blog article by a real estate agent I follow and he said that he owned 7 houses on one small street, owning nearly all of them (there are 11 in total) and he rents them out. I think if you can manage to own an entire street of homes, it would likely make the job of maintenance a lot easier to handle.
I'd imagine it's fairly common. It would certainly save money and effort driving all over the place, plus if the houses are all built the same then maintenance is even easier.
If you're thinking about doing this, it seems like a good idea.
I don't work with buying properties personally but my uncle owns an entire street of homes. The taxes are outrageous so you have to ensure you charge rent accordingly.