סימן קה סעיף א
אָסוּר לְהַסִּיעַ וְלִשָּׂא מִטַּלְטְלָיו וּכְלֵי בֵּיתוֹ בְּחֹל הַמּוֹעֵד מִדִּירָה שֶׁבֶּחָצֵר זוֹ לְדִירָה שֶׁבֶּחָצֵר אַחֶרֶת, אֲפִלּוּ מִדִּירָה כְעוּרָה לְדִירָה נָאָה. אֲבָל מִבַּיִת לְבַיִת בֶּחָצֵר אַחַת, מֻתָּר. וְכֵן אִם שְׁתֵּי הַחֲצֵרוֹת סְמוּכוֹת וְיֵשׁ פֶּתַח בֵּינֵיהֶן, מֻתָּר לְהוֹצִיא הַחֲפָצִים דֶּרֶךְ שָׁם. וּבִמְקוֹם פְּסֵידָא, מֻתָּר אֲפִלּוּ מֵעִיר לְעִיר. וְכֵן מִדִּירָה שֶׁאֵינָהּ שֶׁלּוֹ לְדִירָה שֶׁהִיא שֶׁלּוֹ, מֻתָּר מִשּׁוּם שִׂמְחַת יוֹם טוֹב, שֶׁשִּׂמְחָה הִיא לוֹ לָדוּר בְּדִירָה שֶׁהִיא שֶׁלּוֹ (תקל"ה).
It is forbidden to move and carry movable belongings and household utensils on Chol Hamoed, from an apartment in one courtyard to an apartment in another courtyard, even from an unattractive apartment to a nice one.1Shulchan Aruch 535:1. If these items are necessary for the Moed, and it is obvious that it is so, you may do it even openly. (Eliyahu Rabbah, Mishnah Berurah 535:4) But to move these items from one house to another in the same courtyard, is permitted.2Because there is less bother and less publicity. (Mishnah Berurah) Similarly, if the two courtyards are adjacent to each other, and there is a door between them, it is permitted to take things out through that door. However, if you would otherwise incur a loss, you are permitted to move these articles even from one city to another.3Ramah. Moving from a house that doesn't belong to you to your own house, is permitted, for this is considered rejoicing on Yom Tov, because it is a joy to live in your own home.4Shulchan Aruch 535:2 says this applies, even if you move from a nice one to an unattractive one. If you shared a rented room with someone, you may move to a private rented room. (Peri Megadim 535:2) If you already live in your own house and want to bring your belongings from another house, this reason (happiness of moving into your own house) does not apply (Minchas Pittim) and you should not be lenient. (Mishnah Berurah 535:7)
תנא דבי אליהו כל השונה הלכות בכל יום מובטח לו שהוא בן העולם הבא שנאמר הליכות עולם לו אל תקרי הליכות אלא הלכות (נדה ע"ג.)