The words "real estate" and "real property" as used in this title shall include apartments or other portions, however designated, of horizontal property regimes, or a condominium interest in property, as may be created under any laws now in existence or hereafter enacted. A mutual savings bank may do any act necessary or appropriate in connection with its interest in or ownership of any portion of a horizontal property regime or condominium.

Horizontal property regimes: Chapter 64.32 RCW.