US-New York

Party Wall Agreement in New York

10 feet
Maximum distance from property line triggering NYC Building Code §27-824 notice requirements
30 days
Minimum written notice period to adjacent property owners before excavation under NYC Admin Code §28-105.4.2
$500
Minimum filing fee for Party Wall Agreement registration with NYC Department of Buildings (DOB)
90 days
Statute of limitations to bring a private nuisance or trespass claim related to unauthorized wall use (NY CPLR §214-a)
The Short Answer

Yes, a party wall agreement is often required in New York when construction affects a shared boundary wall or encroaches within 10 feet of a neighbor’s property line.

What the Law Says

Practical Steps

Important Deadlines

When to See a Lawyer

Sources

statuteNYC Administrative Code §28-105.4.2statuteNYC Building Code §27-824 (repealed but incorporated into NYC Construction Codes)statuteNYS Real Property Law §291governmentNYC Department of Buildings: Party Wall Guidance

Related Questions

Can my neighbor build against or attach to my wall in New York?Who pays for party wall repairs in New York?How do I force a party wall agreement in New York?What is the mandatory notice for excavation near a neighbor in NY?Does a fence count as a party wall in New York?

Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-10-18.