Definitions
apartment:
flat, usually with an association of owners
villa:
detached house
bungalow:
connected house, not allways one floor
finca:
detached house in Spanisch farmhouse style
townhouse:
house usually situated in the centre of a village or city
piso:
plain apartment
atico:
pent-house
plots:
either building land with a building obligation to a particular building company, or building land free of building obligation