The Collaborative International Dictionary of English v.0.48:

Renovator \Ren"o*va`tor\ (r?n"?-v?`t?r), n. [L.: cf. F.
   r['e]novateur.]
   One who, or that which, renovates. --Foster.
   [1913 Webster]

WordNet (r) 3.0 (2006):

renovator
    n 1: a skilled worker who is employed to restore or refinish
         buildings or antique furniture [syn: refinisher,
         renovator, restorer, preserver]