Which Lease Violations Can an Attorney Enforce?

New York Property Law, RPAPL, and the Housing Maintenance Code establish the primary legal structure. Property Law Article 2 governs lease formation and termination; RPAPL Article 7 establishes the eviction process (known as summary proceeding); and the Housing Maintenance Code imposes affirmative duties on landlords regarding habitability, maintenance, and code compliance. Rent stabilization laws (Rent Stabilization Law of 1989, as amended) impose additional rent increase limits and lease renewal requirements for certain buildings. Local laws in New York City add further restrictions on lease terms, eviction grounds, and tenant protections. Landlords must comply with these overlapping regimes, or they face liability for damages, attorney fees, and procedural dismissal of enforcement actions.

New York recognizes an implied warranty of habitability requiring landlords to maintain premises in safe, sanitary condition suitable for human occupancy. Courts interpret this warranty broadly, encompassing heat, hot water, plumbing, electrical systems, and freedom from pests and structural defects. The standard is objective, not based on tenant subjective complaint alone; courts examine whether conditions materially affect health and safety. Landlords cannot waive this warranty or include lease clauses exempting them from habitability duties. Breach triggers tenant remedies including rent abatement, repair-and-deduct rights, and damages claims, making habitability compliance a foundational risk management issue.

Before commencing a summary proceeding for non-payment of rent, a landlord must serve the tenant with written notice demanding payment within three business days (or such longer period as the lease specifies). This notice must be in English and any language the tenant customarily uses for lease communications. For lease violations other than non-payment, the notice period is typically ten days. The notice must clearly state the grounds for eviction and the deadline for cure or payment. Only after the notice period expires without compliance may the landlord file a summary proceeding petition in the appropriate court (District Court, City Court, or Supreme Court depending on location and claim amount). Failure to serve proper notice or premature filing results in dismissal without prejudice, delaying enforcement and increasing administrative costs.

New York Real Property Law Section 223-f prohibits landlord retaliation against tenants who exercise legal rights such as filing housing code complaints, requesting repairs, or organizing with other tenants. When a tenant raises a retaliation defense in a summary proceeding, the burden initially rests on the tenant to establish a prima facie case of retaliation (i.e., that the eviction action was commenced within six months of the protected activity and the timing suggests retaliation). If the tenant meets this burden, the landlord must prove by clear and convincing evidence that the eviction would have been commenced regardless of the protected activity. Courts take this defense seriously and often scrutinize the timing of eviction notices relative to tenant complaints or organizing activity. Landlords should maintain detailed records of lease violations, non-payment, and other grounds for eviction independent of any protected tenant conduct to defend against retaliation claims.

For rent-stabilized apartments, landlords must offer lease renewals at regulated rent increases set annually by the Rent Guidelines Board. Lease renewal offers must comply with strict statutory language and must be served on the tenant within specific timeframes (typically 90 to 150 days before lease expiration). The renewal lease must include all material terms of the prior lease unless the law permits modification. Landlords cannot impose additional charges, require concessions, or condition renewal on tenant waiver of legal rights. Failure to serve a timely, compliant renewal offer may result in the tenant's right to remain at the prior lease rent indefinitely, creating significant revenue loss. Courts have consistently held that technical defects in renewal offers (incorrect rent calculation, missing statutory language, untimely service) render the offer void and bar the landlord from evicting for non-renewal.

New York City Local Law 26 (2019) restricts tenant screening practices, requiring landlords to use objective criteria and limiting the use of criminal history, credit scores, and income multiples in making rental decisions. Local Law 44 (2018) caps application fees and requires transparency regarding fees and lease terms. Landlords must provide tenants with written notice of all lease terms, fees, and conditions before lease execution. These laws also restrict landlords' ability to require guarantors or co-signers except in limited circumstances. Violations result in damages awards, civil penalties, and potential attorney fee liability. Landlords should implement compliant screening protocols and maintain documentation of objective criteria applied to all applicants.

Landlords should maintain detailed records including signed leases with all amendments, written notices of default or lease violation with proof of service, rent payment records (cancelled checks, bank deposits, payment receipts), photographs or video of property conditions and any tenant-caused damage, maintenance and repair logs, and written communications with tenants regarding complaints or disputes. For non-payment cases, a certified rent ledger showing rent due dates, amounts paid, dates of payment, and any remaining balance is essential. For lease violation or habitability disputes, dated photographs, inspection reports, and correspondence with contractors or inspectors create a factual record courts rely on. These materials should be organized chronologically and preserved in both physical and digital form. Landlords who lack clear documentation often face dismissal of claims or reduced recovery in damages cases.

Landlords should maintain a written log of lease violations independent of any tenant complaints or protected activity. This log should include dates, descriptions of violations, and any warnings or notices provided. If a tenant files a housing code complaint or engages in organizing activity, the landlord should document the date and nature of that activity (e.g., date tenant filed complaint with Department of Housing Preservation and Development, date tenant attended tenant association meeting). If the landlord later pursues eviction, the landlord should be prepared to show that the grounds for eviction (non-payment, lease violation, etc.) existed and were documented before or separately from the protected tenant activity. This separation of records helps establish that the eviction decision was not retaliatory. Courts in New York have dismissed eviction petitions where timing suggested retaliation but landlords lacked clear documentation of pre-existing lease violations.