If I have fencing around my yard, but it was all erected by my neighbors around me, can I use that fencing as the enclosure for an 'Eiruv?

Of course, CYLOR for practical cases. I'm asking for the basic rules as recorded in Halachic literature.

  • 1
    If you can't, how can you carry in anyone else's house?
    – YDK
    Commented Feb 26, 2012 at 22:23
  • CYLOR (.......) Commented Feb 26, 2012 at 22:30
  • I assume the fences are 10 tefachim tall and completely enclose etc. etc.
    – Double AA
    Commented Feb 26, 2012 at 22:43
  • I'd guess the fences don't run exactly on the property line in an ordinary case, so it could be the area they enclose is not just yours and you would still need shared food to carry there.
    – Double AA
    Commented Jan 7, 2018 at 19:01

1 Answer 1


The Shulchan Aruch rules (OC 362:3) that a mechitza which came into being by itself counts as a mechitza at least for areas less than the amount of land you could plant 2 sa'ah of grain on (much bigger than your average backyard). So clearly at least for small areas like your backyard, the details of the mechitza's identity do not matter.

Furthermore, I have worked on and repaired eruvin in a positive integer number of cities and have seen many places where the boundary utilizes existing edifices that were in no way owned by Jews or built for the purpose of the eruv.


  • 4
    Zero is a number, too. :-)
    – msh210
    Commented Feb 26, 2012 at 22:53

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