The sets in Vancouver that were temporary structures that were built, and in the case of the Swan house, rebuilt have now come down. The structures that remain standing in the Vancouver area are the ones that existed as locations prior to filming ever beginning. Some of these include the following:

Jacob’s House location
Movie theater where the Mike, Bella, Jacob three-way date and aftermath was shot
Movie theater where the Bella and Jessica motorcycle scene was shot
Move theater recently used for assumed flashback footage
The Cullen house used in New Moon
The pool where the Kristen Stewart, Rachelle Lefevre, and Taylor Lautner filmed the  CGI for Bella’s cliff jump

Of course the outdoor locations of the park land used for the break-up scene and the beautiful coastline of the Tofino area where the cliff diving scenes were shot aren’t going anywhere.

You can see what remains of cottage location above taken by Cybermelli and what remains of the Swan House here. (Via TwiExaminer)

Who knows, maybe they’ll auction some memorable pieces?