Can a Landlord Lock You Out in Nassau County, NY? Generally No

Under New York law, a landlord cannot legally lock out a tenant without a court order. Self-help evictions (changing locks, removing doors, shutting utilities) are illegal. Exceptions where a court may authorize lockout after due process:

• Nonpayment of rent.
• Lease violation (e.g., illegal activity, nuisance).
• Holdover after lease expiration.

The landlord must file an eviction petition, obtain a judgment, and have a warrant executed by a sheriff/marshal. If locked out illegally, call 911 or contact a tenant attorney; you may be entitled to damages and re-entry.