May one build his Sukkah on the sidewalk?<a href="#_ftn1" name="_ftnref1">[1]</a>
No. One may not do so as it blocks the space of the passersby.
<a href="#_ftnref1" name="_ftn1">[1]</a> See M”B and Biur Halacha ibid; See also Shoel Umeishiv ibid that the four Amos of street before ones house is considered ones property. Vetzaruch Iyun; See Nitei Gavriel 4:3

Shulchan Aruch HaRav | ❓ May one build his Sukkah on the sidewalk?

May one build his Sukkah on the sidewalk?[1] No. One may not do so as it blocks the space of the passersby. [1] See M”B and Biur Halacha ibid; See also Shoel Umeishiv ibid that the four Amos of street before ones house is considered ones property. Vetzaruch Iyun; See