The Collaborative International Dictionary of English v.0.48:

homebuilder \homebuilder\ n.
   someone who builds houses as a business.

   Syn: housebuilder.
        [WordNet 1.5] homecoming

WordNet (r) 3.0 (2006):

homebuilder
    n 1: someone who builds houses as a business [syn:
         homebuilder, home-builder, housebuilder, house-
         builder]