A slumlord is a slang term for a landlord, generally an absentee landlord with more than one property, who attempts to maximize profit by minimizing spending on property maintenance, and usually rents
Pictured is the back of the Kromme Elleboog number 40. The street was one of the oldest streets in Dordrecht, but in the 20th century it was also a street with the poorest inhabitants. Slumlords tried to make as much money as possible without maintaining the properties. All kinds of extensions had to make even more rental space possible. This photo is from 1960. A few years later, these houses were demolished.