Q. Someone who decided not to rely anymore on the city eiruv and is thus placing a tzuras hapesach on his front yard (two posts with a wire on top, that resemble a door frame and thus permit carrying inside the area they surround). Since he is using that Halachic door frame as an entrance to his home front yard, does he have to place a mezuza? Can he if he wants to?
A. Chazon Ish (O.H. Eiruvin 110: 5 – Y.D. 171: 1) maintains that in principle one may be liable to place a mezuza on a tzuras hapesach. However, the minhag is not to do so, since it is usually located in an open and unprotected location and prone to be stolen or damaged.
Pischei Sheorim (p. 127) mentions five reasons why a tsuras hapesach made for an eiruv is exempt from mezuza.
Horav Shlomo Miller’s Shlit’a opinion is similar.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a.