Oh...in this part of the world, they are mother-in-law apartments or garage apartments.....but a rose by any other name.....
"Mother-in-law" apartment would never appear in the text of a law here.
It speaks to a particular family relationship, & such a suggestion of
restriction would violate fair housing laws if it were adopted in common
leasing parlance. And yes, our real estate licensing law has been that
persnickety at times. I recall that in continuing education for my broker
license that one year we were prohibited from using these discriminatory
terms (adversely affected group in parentheses)....
Family room (singles)
Walk in closet (the handicapped)
Great view (the blind)
There was much licensee eye rolling in the class that year.