Reply To: Bdikas Chometz: Hid 10 pieces of bread but found 11

laskern, “Over here he will never return, so he gives up ownership of his house and has no responsibility towards it. This is similar to moving thirty days before Pesach where I think he will not have to be bodek the old place at most he can be mevatel. The SA is talking in a case where he will return sometime.”

Sorry, but that is incorrect.
please re-read the halacha:
http://hebrewbooks.org/pdfpager.aspx?req=46447&st=&pgnum=148&hilite=

If one leaves his house and intends to return after pessach (FN 2 Shulchan Aruch HaRav adds that THE SAME APPLIES IF HE NEVER (EVER – N E V E R) WILL RETURN TO THIS HOUSE)…if he leaves within 30 days of pessach (after purim) he is required to do bdikas chometz AT NIGHT without a brocha…