qualifying ratios
Calculations that are used in determining whether a borrower can qualify for a mortgage. There are two ratios. The "top" or "front" ratio is a calculation of the borrower’s monthly housing costs (principle, taxes, insurance, mortgage insurance, homeowner’s association fees) as a percentage of monthly income. The "back" or "bottom" ratio includes housing costs as will as all other monthly debt. 

quarry tile
In masonry, a name given to machine-made, unglazed tile, also called promenade tile. 

quarter round
Molding strips presenting the profile of a quarter circle.

Queen Anne style
A Victorian-era style that originated in England during the reign of Queen Anne and was revived in both England and America in the late 19th century.

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 deed that transfers without warranty whatever interest or title a grantor may have at the time the conveyance is made. 

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