What about the word bastard in such phrases as
"Look at that big bastard house?"
(rnuk http://flickr.com/rnuk, Mon 26 Feb 2007, 16:45, archived)

Adjective I reckon.
Unless you mean a house where bastards live, in which case it's a stacked noun.
( Newington, Mon 26 Feb 2007, 16:50, archived)