If you manage residential rental properties in New York, the Housing Stability and Tenant Protection Act of 2019 is the single most consequential piece of legislation shaping your day-to-day operations. Signed into law on June 14, 2019, the HSTPA represented the largest overhaul of New York's landlord-tenant law in nearly a century. It closed deregulation pathways that had been removing rent-stabilized units from the system for decades, eliminated the vacancy bonus that landlords had relied on for years, fundamentally changed how improvement costs can be passed through to tenants, and extended tenant protections to market-rate renters in ways that had not existed before.

Five years on, the HSTPA's effects are fully embedded in how New York's rental market operates. And in 2024, New York added another layer with the Good Cause Eviction Law, extending protection to market-rate tenants who were previously outside the rent regulation framework entirely.

Property managers who learned the New York market before June 2019 are operating in a fundamentally different environment today. Many of the assumptions built into pre-HSTPA management practices, about vacancy pricing, improvement cost recovery, and the ability to exit rent stabilization at high rents, tend to break down quickly, often within the first lease cycle.

New York rent stabilization under the HSTPA operates across four core areas that every property manager must understand: how rent increases are set and constrained, what deregulation is no longer possible, how improvement costs can and cannot be recovered, and how the Good Cause Eviction Law added a new compliance layer for market-rate units effective 2024. Each area carries specific operational obligations and, when mishandled, specific financial consequences.

Here is what this guide covers:

1. Which buildings and apartments are covered by rent stabilization

2. How the Rent Guidelines Board sets permissible increases

3. What the HSTPA eliminated: vacancy bonuses, high-rent deregulation, and preferential rent resets

4. Individual Apartment Improvements and Major Capital Improvements under the new limits

5. The Good Cause Eviction Law and what it means for market-rate units

6. Notice requirements, overcharge liability, and operational compliance

Which Buildings and Apartments Are Covered

Rent stabilization in New York applies to a defined universe of buildings and units, and understanding that universe is the starting point for every compliance decision.

In New York City, rent stabilization generally covers buildings with six or more residential units that were built between February 1, 1947 and December 31, 1973. Newer buildings constructed after 1974 can also be subject to rent stabilization if they receive certain tax incentives, most commonly through the 421-a program. Older buildings built before February 1, 1947 may be subject to the stricter rent control regime, though rent-controlled units that become vacant typically convert to rent stabilization.

Before the HSTPA, apartments could exit rent stabilization through two primary mechanisms: high-rent deregulation, which removed apartments once rent reached $2,775 per month, and high-rent high-income deregulation, which combined rent thresholds with tenant income tests. Both pathways were eliminated effective June 14, 2019. Since then, rent-stabilized apartments remain stabilized regardless of how high the rent reaches, unless the building received a 421-a exemption that specifically provides for deregulation at a defined point.

This change has a significant portfolio implication. Pre-HSTPA, property managers could project a pathway for certain units to exit stabilization as rents rose. That planning tool is gone. Units that are stabilized today will remain stabilized indefinitely under current law, and management strategy needs to reflect that permanence.

Outside New York City, municipalities can opt into rent stabilization through the Emergency Tenant Protection Act. Before 2019, the ETPA was effectively limited to New York City and its immediately surrounding counties. The HSTPA extended opt-in availability statewide. Since then, cities including Kingston, Poughkeepsie, and several Hudson Valley localities have adopted the ETPA. In June 2025, the New York Court of Appeals upheld Kingston's adoption, confirming that municipalities statewide can and do have the authority to opt in. Property managers operating upstate portfolios need to monitor local opt-in decisions as part of their compliance landscape.

How Rent Increases Are Set: The Rent Guidelines Board

For rent-stabilized apartments in New York City, permissible annual rent increases are set by the New York City Rent Guidelines Board, a nine-member panel appointed by the mayor. The RGB meets every spring and votes on maximum allowable increases for one-year and two-year renewal leases. The approved rates apply to leases commencing in the following October through September period.

For leases beginning between October 1, 2025 and September 30, 2026, the RGB approved increases of 3% for one-year renewal leases and 4.5% for two-year renewal leases. The prior period (October 2024 through September 2025) carried increases of 2.75% for one-year leases and 5.25% for two-year leases.

These are the maximum permissible increases for standard renewals. They apply to the rent the tenant is actually paying, not the legal regulated rent if a preferential rent is in place. The RGB rate is not a floor and not a target. It is a ceiling that cannot be exceeded for a standard renewal lease.

Property managers need a process for tracking RGB rates annually and verifying that renewal offers comply with the current guideline. Issuing a renewal offer at a rate above the applicable RGB guideline constitutes a rent overcharge, which carries significant consequences under the HSTPA's extended lookback rules.

The RGB governs New York City. Localities that have adopted the ETPA establish their own rent guidelines boards, which set rates applicable to regulated units in those jurisdictions. A property manager overseeing a portfolio that spans New York City and upstate localities subject to the ETPA is tracking multiple sets of guidelines simultaneously.

What the HSTPA Eliminated: Vacancy Bonus, High-Rent Deregulation, and Preferential Rent Resets

The HSTPA's most operationally significant changes were eliminations: pathways, bonuses, and flexibilities that had shaped how New York's rental market functioned for decades. Understanding what no longer exists is as important as understanding what the current rules require.

The Vacancy Bonus

Before June 14, 2019, landlords of rent-stabilized apartments were entitled to a 20% vacancy bonus when a unit became vacant between tenants. This meant that each time a long-term tenant moved out, the landlord could reset the rent upward by 20% before offering the apartment to a new tenant. Over time, with turnover, rents in stabilized buildings could increase meaningfully even within the stabilization framework.

The HSTPA eliminated the statutory vacancy bonus entirely. When a rent-stabilized tenant vacates today, the new tenant's lease must be offered at the prior legal regulated rent, subject only to the applicable RGB guideline adjustment. There is no longer a vacancy premium.

This change has a compounding effect on portfolio economics. The pre-HSTPA expectation that turnover would provide regular rent resets no longer holds. Revenue planning for stabilized portfolios now depends entirely on RGB guideline adjustments and approved improvement cost recovery, both of which are significantly constrained compared to the pre-2019 regime.

High-Rent Deregulation

Before 2019, apartments that reached $2,775 per month in legal regulated rent could exit rent stabilization, either through vacancy or through a combination of high rent and tenant income above $200,000 per year. Since 1994, this mechanism resulted in the removal of approximately 160,000 stabilized units from the regulated inventory statewide.

The HSTPA repealed both decontrol pathways. No apartment that was stabilized as of June 14, 2019 can exit stabilization solely on the basis of rent level. The only remaining pathway to deregulation for most stabilized units is expiration of a tax benefit program that specifically provided for it.

Preferential Rent Lock-In

A preferential rent is a rent that is lower than the legal regulated rent the landlord could lawfully charge. Before the HSTPA, landlords could offer a preferential rent during a tenancy and then, at lease renewal, raise the rent to the full legal regulated rent rather than limiting the increase to the RGB guideline.

The HSTPA ended this. Effective June 14, 2019, any tenant paying a preferential rent retains that preferential rent for the duration of their tenancy. Annual increases must be calculated based on the preferential rent, not the legal regulated rent. Only when the tenant permanently vacates can the landlord advertise the apartment at the full legal regulated rent.

For property managers who inherited portfolios with significant gaps between preferential and legal rents, this change locked in significant revenue constraints. A unit where the legal regulated rent is $2,400 but the preferential rent is $1,800 will continue to have increases calculated on the $1,800 base for as long as the current tenant remains. The $600 gap cannot be recaptured until vacancy.

We see this consistently create financial model mismatches in portfolios acquired after 2019 where the buyer's underwriting did not fully account for the preferential rent lock-in across the unit mix.

Improvement Cost Recovery: IAIs and MCIs Under the New Rules

Before the HSTPA, landlords could recover the cost of apartment and building improvements through rent increases that were, in many cases, permanent and substantial. The 2019 law significantly constrained both Individual Apartment Improvement increases and Major Capital Improvement increases.

Individual Apartment Improvements (IAIs)

Under the HSTPA, IAI increases for occupied apartments require the tenant's written informed consent. For vacant apartments, IAIs are permitted but subject to caps. The original HSTPA cap was $15,000 per unit, with amortization schedules that spread the recovery over 15 years: 1/168 of the permitted cost per month for buildings with 35 or fewer apartments, and 1/180 per month for buildings with more than 35 apartments.

These caps created a significant operational problem. At $15,000 per unit with the applicable amortization, the monthly rent increase from a maximum IAI was modest relative to the actual cost of gut renovating a long-vacant unit in a New York City building. The result was a growing inventory of vacant stabilized apartments that owners could not economically bring back to market.

Recent amendments increased IAI caps to $30,000 per unit in most cases, with a higher threshold of $50,000 available under specific conditions: after a continuous occupancy of at least 25 years immediately prior to the vacancy, or for units timely registered as vacant with DHCR in 2022, 2023, and 2024. IAI increases may now be treated as permanent under updated rules, subject to current DHCR guidance and applicable caps. Property managers should verify current DHCR operational bulletins before applying any IAI increase, as the rules have been amended and the applicable bulletin is the controlling guidance for each improvement.

Major Capital Improvements (MCIs)

MCIs are building-wide improvements such as roof replacement, boiler installation, window replacement, and electrical or plumbing upgrades. Under pre-HSTPA rules, MCI rent increases were permanent additions to the base rent. The HSTPA changed this: MCI increases are now temporary and must be removed from the rent 30 years after the increase becomes effective.

MCI increases require prior approval from the New York State Division of Housing and Community Renewal. The DHCR reviews the application, and tenants receive notice and the opportunity to challenge. Once approved, the MCI increase is capped at 2% of the tenant's current rent per year and is added to the base rent before the RGB adjustment is applied.

The practical implication for property managers is that building improvement budgets must now account for a constrained and time-limited recovery pathway. A $500,000 roof replacement across a 50-unit building cannot be fully recovered through the MCI mechanism within a timeline that makes the investment financially straightforward. Capital planning for stabilized portfolios requires modeling actual recovery under current DHCR rules, not pre-HSTPA assumptions.

The Good Cause Eviction Law: A New Layer for Market-Rate Units

The HSTPA was focused primarily on rent-stabilized housing. The Good Cause Eviction Law, signed into law on April 20, 2024, extended meaningful tenant protections to a large category of market-rate apartments that had previously been outside any regulatory framework.

Under the Good Cause Eviction Law, landlords covered by the law cannot evict a tenant or refuse to renew a lease without a legally recognized reason. Good cause includes nonpayment of rent where the amount owed is reasonable, material lease violations not corrected after notice, criminal activity, and owner move-in under defined conditions. The law also limits rent increases: a rent increase is presumptively unreasonable if it exceeds the lower of 10% or 5% plus the applicable regional Consumer Price Index, which is updated annually and published by the New York State Division of Housing and Community Renewal each year.

The law applies to a broad set of market-rate apartments in New York City built before 2009, subject to rent thresholds and statutory exemptions. Units renting above 245% of the Fair Market Rent are excluded. Buildings with 10 or fewer units where the owner lives in the building are excluded. Units in co-ops and condominiums are excluded. Buildings constructed after 2009 are excluded. Small landlords owning 10 or fewer units statewide are excluded.

Notice requirements took effect on August 18, 2024. Every landlord covered by the Good Cause Eviction Law must include disclosure language in every lease, renewal lease, and legal notice sent to tenants, stating whether the unit is covered and, if not, the reason it is exempt. Failing to include this disclosure is itself a compliance failure.

Outside New York City, municipalities can opt in. Albany, Beacon, Fishkill, Hudson, Ithaca, Kingston, Newburgh, New Paltz, Poughkeepsie, and Rochester have adopted the Good Cause Eviction Law. The list is expanding. Property managers overseeing upstate portfolios need to track opt-in decisions in every municipality where they operate.

Notice Requirements, Overcharge Liability, and Operational Compliance

The HSTPA tightened several procedural requirements that property managers must track carefully.

Renewal Lease Timing and Notice

Landlords of rent-stabilized apartments must offer renewal leases. The timing of the renewal offer is governed by DHCR regulations and must be made within a defined window before the current lease expires. Failure to offer a timely renewal does not end the tenancy but does affect the landlord's ability to collect any increase until a valid renewal offer is made and accepted.

For market-rate apartments, the HSTPA introduced notice requirements for rent increases of 5% or more, or for non-renewals. The required advance notice depends on tenancy length: 30 days for tenants in residence less than one year, 60 days for one to two years, and 90 days for more than two years. These notice periods apply regardless of whether the apartment is stabilized or market-rate.

Late Fees

The HSTPA capped late fees at the lesser of 5% of the monthly rent or $50. Charging a late fee above this cap is a violation of the law. The fee can only be charged after rent is five days overdue, and landlords must provide written notice of delinquency after five days of nonpayment.

Security Deposits

Security deposits are capped at one month's rent statewide. Landlords cannot collect last month's rent as an additional deposit. The deposit must be returned within 14 days of the tenant vacating, along with an itemized statement of any deductions. Failure to return the deposit within 14 days forfeits the landlord's right to retain any portion, even for legitimate deductions.

Overcharge Liability and Lookback Periods

The HSTPA extended the lookback period for rent overcharge claims. Under prior law, overcharge claims were generally limited to looking back four years. The HSTPA expanded this to six years for certain claims and expanded DHCR's ability to examine rent history beyond prior limitations in certain cases, particularly where fraud is alleged.

Treble damages, equal to three times the amount of the overcharge, apply to willful overcharges. The burden to demonstrate that an overcharge was not willful rests on the landlord. Property managers who cannot produce complete rent registration histories and lease documentation for each stabilized unit face evidentiary gaps that courts and DHCR interpret unfavorably.

Maintaining organized, complete, and current rent registration records for every stabilized unit is not optional compliance housekeeping. It is the primary defense against overcharge liability. For a deeper look at how documentation discipline connects to lease compliance risk across a portfolio, see RIOO guide to contract management in property management. RIOO's Contracts & Renewals module supports the organized, property-level recordkeeping that stabilized portfolio management requires in New York's regulatory environment.

Key Takeaways for Property Managers

• The HSTPA permanently closed the two primary deregulation pathways: high-rent deregulation and high-rent high-income decontrol. Stabilized units stay stabilized under current law regardless of rent level

• The vacancy bonus is eliminated. New tenants in stabilized apartments are offered leases at the prior legal regulated rent adjusted only by the applicable RGB guideline

• Preferential rents are locked in for the duration of the tenancy. Increases must be calculated on the preferential rent, not the legal regulated rent, until the unit is vacated

• IAI caps have been increased to $30,000 per unit in most cases under recent amendments, with $50,000 available under specific conditions. Property managers should verify current DHCR guidance before applying any IAI increase

• The Good Cause Eviction Law, effective April 20, 2024, extends just cause eviction protections and rent increase constraints to a broad set of market-rate apartments built before 2009 in New York City and opted-in municipalities

• Notice disclosures under the Good Cause Eviction Law are mandatory in all leases and legal notices for covered landlords, effective August 18, 2024

• Overcharge liability lookback periods have been extended. Complete rent registration records and lease documentation are the primary defense against overcharge claims with treble damage exposure

New York Is Not Done Legislating

The HSTPA was described at the time of its passage as the most significant change to New York's rent laws in a generation. Five years later, the Good Cause Eviction Law added another structural layer. The ETPA continues to spread to new municipalities. Legislative proposals to further expand Good Cause Eviction coverage, tighten IAI and MCI rules, and increase penalties for overcharge and harassment violations are introduced regularly in Albany.

New York's legislative direction on tenant protection is not ambiguous. Each cycle adds requirements, tightens enforcement, and expands coverage. Property managers who treat compliance as a static framework, learned once and applied indefinitely, will find themselves operating under rules that no longer reflect current law.

Staying current in New York requires tracking RGB guideline orders annually, monitoring ETPA opt-in decisions in every municipality where you operate, reviewing lease templates against current HSTPA and Good Cause requirements, and maintaining rent registration records that can withstand DHCR scrutiny across an extended lookback window.

Managing a New York stabilized or mixed portfolio with that level of rigor requires the right operational infrastructure. RIOO's Leasing Management module provides the property-level documentation and financial tracking that New York's compliance demands. For more on how technology-enabled platforms adapt as regulatory environments grow more complex, see RIOO guide to scaling property management with tech-enabled solutions. If you manage New York residential properties at scale, the infrastructure behind your operations determines how well you hold up as the regulatory framework continues to evolve.

FAQ

1. What is the HSTPA and when did it take effect?

The Housing Stability and Tenant Protection Act of 2019 (HSTPA) is a comprehensive package of amendments to New York's rent regulation laws. It was signed on June 14, 2019, and most provisions took effect immediately on that date. It represents the most significant change to New York landlord-tenant law in decades.

2. Can a rent-stabilized apartment be deregulated in New York?

Under current law, no. The HSTPA eliminated both high-rent vacancy decontrol and high-rent high-income decontrol. A stabilized apartment remains stabilized regardless of how high the rent reaches, unless the building received a tax benefit program such as 421-a that specifically provides for deregulation at a defined point.

3. What happened to the 20% vacancy bonus?

It was eliminated by the HSTPA effective June 14, 2019. When a stabilized tenant vacates, the new lease must be offered at the prior legal regulated rent adjusted only by the applicable RGB guideline. There is no longer a vacancy premium for new tenants.

4. What is a preferential rent and how does the HSTPA affect it?

A preferential rent is a rent below the legal regulated rent that the landlord agreed to charge. Before the HSTPA, landlords could raise rent to the full legal regulated rent at renewal. After June 14, 2019, tenants paying preferential rent retain it for the duration of their tenancy. Annual increases must be calculated on the preferential rent, not the legal regulated rent. Only at vacancy can the landlord return to the full legal regulated rent.

5. What are the current RGB guidelines for rent-stabilized apartments?

For leases beginning between October 1, 2025 and September 30, 2026, the NYC Rent Guidelines Board approved increases of 3% for one-year renewal leases and 4.5% for two-year renewal leases. The RGB votes each June and guidelines change annually.

6. What does the Good Cause Eviction Law cover?

The Good Cause Eviction Law, effective April 20, 2024, applies to a broad set of market-rate apartments in New York City built before 2009, subject to rent thresholds and statutory exemptions. It requires landlords to have a legally recognized reason to evict or non-renew, and presumes rent increases above the lower of 10% or 5% plus the applicable regional CPI to be unreasonable. Small landlords owning 10 or fewer units statewide, owner-occupied buildings with 10 or fewer units, and units renting above 245% of Fair Market Rent are among the exemptions. Outside New York City, municipalities can opt in.

7. What is the penalty for a rent overcharge in New York?

Willful overcharges carry treble damages equal to three times the overcharged amount. The HSTPA extended lookback periods and expanded DHCR's ability to examine rent history in certain cases, particularly where fraud is alleged. The burden to demonstrate that an overcharge was not willful rests on the landlord.

8. Are the Good Cause Eviction disclosure requirements mandatory?

Yes. Effective August 18, 2024, landlords covered by the Good Cause Eviction Law must include disclosure language in every lease, renewal lease, and legal notice sent to tenants, stating whether the unit is covered by the law and, if not, the reason for the exemption. Omitting this disclosure is a compliance violation.

Note: The information in this article reflects New York rent stabilization law and the Housing Stability and Tenant Protection Act as of 2026, including amendments and the Good Cause Eviction Law effective April 2024. Property managers should consult qualified legal counsel for guidance specific to their portfolio and jurisdiction.