Jerry-builder

from WordNet (r) 3.0 (2006)

jerry-builder
    n 1: someone who builds cheap buildings out of poor materials on
         speculation for a quick profit

from The Collaborative International Dictionary of English v.0.48

Jerry-builder \Jer"ry-build`er\, n. [Prob. fr. the proper name
   Jerry, familiar form of Jeremiah.]
   A professional builder who erects cheap dwellings of poor
   materials and unsubstantial and slovenly construction.
   [Webster 1913 Suppl.]