Qualifying ratio
A ratio calculated by a lender to determine how much a potential buyer can borrow.

Quiet enjoyment
The right of an owner to use his or her property without interference.

Quiet title suit
A lawsuit filed to ascertain the legal rights of an owner to a certain parcel of property.

Quitclaim deed
A document that releases a party from any interest in a piece of real estate.

Quoin
The outer corner of a building, or the rectangular stone block used to form that corner.