I have a weird interest in houses around my city that clearly used to have businesses in them when people didn't travel as far all the time. Some operate as cof

I have a weird interest in houses around my city that clearly used to have businesses in them when people didn't travel as far all the time. Some operate as cofffee shops, small specialty retail, or services like therapists/accountants. But others are fully homes now, just with a front room area that was aimed at having customers and sometimes a residence in the back or above. They feel like little markers of another time.