MDL § 121 — Advertising Ban
N.Y. Multiple Dwelling Law § 121
New York Multiple Dwelling Law § 121 makes it unlawful to advertise the occupancy or use of dwelling units in a Class A multiple dwelling for occupancy other than permanent residence. Violators face civil penalties of not more than $1,000 for a first violation, $5,000 for a second, and $7,500 for a third or subsequent violation. In cities with a population of one million or more (i.e., New York City), the section is enforced by the Mayor's Office of Special Enforcement.
Who must comply
Other DOB regulations
Special Inspectors & Special Inspection Agencies
1 RCNY § 101-06
OTCR Material Approval
1 RCNY § 101-12
ADA Title III (2010 Standards)
Americans with Disabilities Act Title III, 42 U.S.C. § 12181 et seq.; 28 C.F.R. Part 36 (2010 ADA Standards for Accessible Design)
LL157 Natural Gas Detectors
Local Law 157 of 2016, as amended by Local Law 102 of 2025 (Int. 1281-2025); NYC Admin. Code §28-315.2.4 / §27-2045 — natural gas detecting devices
Office Sprinkler Retrofit (LL26/2004)
Local Law 26 of 2004 (amending NYC Administrative Code / NYC Building Code)
LL26/04 High-Rise Office Sprinklers
Local Law 26 of 2004 (NYC Admin. Code 28-315.2 et seq.)
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