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May one move houses during Sefira?
Some write that one should abstain from moving during the period of Sefira. Accordingly, if one must move during this time, it is best to do so on Rosh Chodesh or on Lag BaOmer. Others however rule that no restrictions exist at all regarding moving during Sefira and it may be thus done on any day.
 Avneiy Tzedek Yoreh Deah 44; Beis Mordechai 30; Poskim in Piskeiy Teshuvos 493:1 footnote 1 and Nitei Gavriel 55:5 footnote 10
 The reason: As moving houses involves joy, as can be seen from the custom of Chanukas Habayis, and [according to some] of making Shehechiyanu. [ibid]
 Avnei Tzedek ibid; Alternatively, one can place Mezuzos on the door of the house prior to Pesach and then move in whenever he desires. [Beis Mordechai ibid]
 Yechaveh Daas 3:30, Tzitz Eliezer 11:41; Piskeiy Teshuvos ibid footnote 6; Nitei Gavriel ibid footnote 9