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.¹ 535:1. 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.²) 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.³ 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.⁴ 535:2 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)

footnotes: ¹ Shulchan Aruch ² Because there is less bother and less publicity. (Mishnah Berurah ³ Ramah. ⁴ Shulchan Aruch

If you must take in fruit, or other merchandise because you fear it will be stolen, or damaged, it should be done in a secluded manner if possible. If you cannot do it in a secluded manner, you are permitted to do it openly.⁵ 538:2.

footnotes: ⁵ Shulchan Aruch