The Collaborative International Dictionary of English v.0.48:

Householder \House"hold`er\, n.
   The master or head of a family; one who occupies a house with
   his family.
   [1913 Webster]

         Towns in which almost every householder was an English
         Protestant.                              --Macaulay.
   [1913 Webster]

   Compound householder. See Compound, a.
      [1913 Webster] housekeep

WordNet (r) 3.0 (2006):

householder
    n 1: someone who owns a home [syn: homeowner, householder]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "householder":
   beneficiary, cestui, cestui que trust, cestui que use, cottager,
   cotter, cottier, crofter, deedholder, feoffee, feudatory,
   freeholder, head of household, laird, landlady, landlord, lord,
   master, mesne, mesne lord, mistress, owner, proprietary,
   proprietor, proprietress, proprietrix, rentier, squire,
   titleholder