Definition.
NYC Admin. Code § 28-305.4.1
in effect§ 28-305.4.1 Definition.
As used in this article, the following term shall have the following meaning:
RETAINING WALL. A wall that resists lateral pressures and limits lateral displacement caused by soil, rock, water or other materials, except that basement and vault walls that are part of a building, underground structures, including but not limited to utility vault structures, tunnels, transit stations and swimming pools, shall not be considered retaining walls.
Source: City of New York, Charter, Administrative Code and Rules (American Legal Publishing XML export, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/newyorkcity/latest/NYCadmin/0-0-0-158196Fetched: 10/24/2026
