כל היקף שלא הוקף לדירה כגון גנות ופרדסים ובורגנין שאינם עשוים אלא לשמור בתוכן אסרו חכמים לטלטל בתוכה יותר מד' אמות אם הוא יותר מסאתים אבל אם היא סאתים שהוא שיעור ע' אמה וד' טפחים על ע' אמה וד' טפחים מותר לטלטל בכולו בין שהוא מרובע בין שהוא עגול או אריך וקטין ובלבד שלא יהא אורכו יותר משנים ברחבו אמה אחת ואם הוקף לדירה אפי' יש בה כמה מילין מותר לטלטל בכולו: הגה ועיין לקמן סי' ת"א דין סתם עיירות אי מוקפות לדירה וי"א דסתם קרפיפות שלנו מקרי מוקפות לדירה דרגילים לפתוח פתח תחילה ואח"כ להקיף (מרדכי פרק עושין פסין) וי"א עוד דכל קרפף שהוא סמוך לביתו מקרי היקף לדירה כי דעתיה עלויה (הגהות אשירי פ"ב דעירובין) ויש חולקין בזה (ב"י בשם תוס'):

Regarding every enclosed area that is not enclosed as a dwelling place, like a garden, an orchard, or a shed, but is just enclosed to protect its contents, the Sages forbade carrying something more than four amot in them if it is more than two seot. However, if it is two seot big, which is seven amot and four tefachim by seven amot by four tefachim, it is permitted to carry within it, whether it is square, round, long, or wide, as long as its length is not more than twice its width. If it is enclosed for dwelling, even if it includes a few mils, it is permitted to carry within all of it. Rema: And see below chapter 401 regarding whether generic cities are enclosed for dwelling. There are some who say that generic porches are enclosed for dwelling, because generally they are built and then enclosed (Mordechai Chapter Osin Pasin). And there are furthermore those who say that any porch attached to the house is considered enclosed for dwelling, because such was his intention (Hagahot Oshr"i on Chapter 2 of Eiruvin), and some disagree (Beit Yosef in the name of the Tosafot).

What is considered enclosed for dwelling purposes? If someone built a house or an opening from his house and then enclosed the area. If it was enclosed not for dwelling and one wants to enclose it for dwelling, he doesn't need to destroy the whole wall. Rather, he should make a breach bigger than ten [amot], and then the house will be open to a non-enclosed area. Then he can return and patch up the whole wall or just leave ten open and that ten is considered an opening. This way, it was open and is now enclosed [newly, and considered enclosed for dwelling]. If he breached one amah and then patched it, and then breaks an adjacent amah and patches it, and so on until he gets to ten, this is permitted. Rema: If it is difficult for him to break the wall, some say that he can put dirt next to the wall from both sides until the wall becomes less than ten [tefachim] tall and the width of the dirt is from four amot [up] for the length of ten amot along the wall. If the dirt is not ten [tefachim] tall, it will be as if he broke the wall, because there are not ten tefachim above the ground, and it is considered the ground of the yard. Even if he returns and removes the dirt, because it was nullified for one Shabbat, [it still holds]. Some disagree, claiming that dirt does not cancel [a wall's legal status] unless one will not ever remove it (Trumat HaDeshen chapter 75, and the Ros"h first chapter of Sukkah).

A piece of land raised ten [tefachim] is considered an enclosed space [not enclosed for dwelling].

If in an enclosure bigger than two seahs, trees are planted to reduce its area, there is no legal reduction (even if they are ten tall and four wide (the Magid chapter 16)), and this is also the case for one who digs a hole.

If one builds a column in order to legally reduce the area and the column is three tefachim wide, the area is effectively lessened.

If one builds a wall for ten [amot] in front of the original wall in order to nullify it as if it did not exist and therefore the area is enclosed for dwelling by the second wall, and the the new wall is three tefachim from the old one, this is permitted.

If one puts mud in front of the original wall in order to lessen the area of the enclosed space and the mud is thick enough such that if the wall is removed, it can stand on its own, the lessening is effective. If this is not true, there is no lessening.

If one builds a wall on top of the original wall in order to enclose it for dwelling, this is doesn't work. However, if the lower walls sink and the top walls remain, they now permit [carrying within the enclosed space]. However, if a hill is bigger than two seahs and someone makes a wall on its edge for dwelling, this works, because he lives in the space of the walls made now.

If an area enclosed for dwelling is bigger than two seahs and one plants trees in most of it, even if they are not planted in lines, they do not cancel the dwelling status of the area. However, if crops are planted in a majority of the area, the plants nullify its status as a dwelling place even if they are only two seahs. If a minority of the land has been planted and it is only two seahs, it is permitted [to carry within it]. If the area planted is more than two seahs, it is forbidden.

If someone has a garden in his yard and it is most of his yard, even if it is only two seahs, he may not carry from the garden or from the yard to the house. If it is bigger than two seahs, he can only carry in the garden and the yard within four amot. If it is the minority of the yard, if it is more than two seahs, the whole yard is forbidden [with regards to carrying]. If it is two seahs or less, it is forbidden to remove something from [the garden] to the house.

If an enclosed space bigger than two seahs is enclosed for dwelling and water enters it, if the water is drinkable, it does not nullify its status as a dwelling place, even if the water spreads more than two seahs and is very deep. If the water is not drinkable, it is treated like plants, assuming that it is ten tefachim deep.

If an enclosed space is three seahs big and it has a roof for one seah of that, it is permitted [to carry in the space] even if the roof is slanted.

If an enclosed place exactly two seahs big is adjacent to a yard and the barrier breaks, the enclosed place is forbidden [regarding carrying within it] because the place of wall adds to it, making it more than two seahs.

If an enclosed space is bigger than two seahs and is not enclosed for dwelling and an opening more than ten [amot] is made and then enclosed such that the new wall makes it permitted [to carry within the space] because the original wall that wasn't for dwelling is nullified, and later the new wall falls, it goes back to being forbidden.