Zoning is the way a local municipality controls how property is developed within its borders. The municipality will divide the town into zoning district which describe what the local government has decided what can be built in that area. For example, a residential zoning district would be limited to residential dwellings while a commercial zoning district would be limited to businesses.
A municipality will also have multiple types of the same district. These districts will have differing requirements of what can be in that district. There are many kinds of residential properties from detached single-family homes to townhouses, and apartments. Therefore, one residential district may be limited to detached single family homes with a certain minimal lot size. Another residential district may allow both detached single-family homes and townhouse.