NYC Rent Stabilization: Registration, Preferential Rent, MCI, and Overcharge Complaints
14 min read · Updated 2025-01-15
Comprehensive guide to NYC rent stabilization: DHCR registration requirements, preferential rent rules under HSTPA, Major Capital Improvement (MCI) increases, and tenant overcharge complaint process.
Rent Stabilization Basics
What is rent stabilization and which buildings are covered?
Rent stabilization is a New York State regulatory system that limits rent increases and provides tenants with rights to lease renewals. In NYC, most rental units in buildings with six or more units built before January 1, 1974 are rent stabilized, unless they were deregulated, exempt (luxury, owner-occupied, etc.), or are in a building that received a tax benefit that imposed stabilization as a condition. As of the Housing Stability and Tenant Protection Act of 2019 (HSTPA), very few apartments can be deregulated — luxury deregulation and high-income deregulation have been eliminated.
What is the DHCR rent registration requirement?
Owners of rent-stabilized buildings must register every stabilized unit annually with the Division of Housing and Community Renewal (DHCR). The registration filing (Annual Building Registration) must be submitted by July 31 each year and reports the apartment number, tenant name (if occupied), current rent, and lease dates. If you fail to register on time, you cannot collect rent increases until you file, and tenants may be entitled to a rent freeze or rollback.
What are the RGB (Rent Guidelines Board) lease renewal increases?
Each year, the NYC Rent Guidelines Board (RGB) sets the maximum rent increase percentages for one-year and two-year lease renewals for rent-stabilized apartments. These increases apply to lease renewals only — you cannot raise the rent mid-lease. The RGB sets different percentages for apartments vs. hotels/rooming houses. Owners must offer a renewal lease at the RGB-allowed increase (or a lesser increase) before the lease expires. Failure to offer a renewal lease is a serious violation.
What is preferential rent and how did HSTPA change the rules?
Preferential rent is when a landlord charges a tenant less than the legal registered rent. Under pre-HSTPA law, landlords could revert to the legal registered rent upon lease renewal — a major source of sudden rent spikes. Under HSTPA (2019), landlords can only charge the preferential rent and must apply the RGB percentage increase to the preferential rent (not the higher legal rent) for the duration of the tenancy. This eliminates the ability to use preferential rent as a mechanism to reset to a higher base.
What is an Individual Apartment Improvement (IAI) and how does it justify a rent increase?
An Individual Apartment Improvement (IAI) is a capital improvement made to a specific apartment (new appliances, kitchen renovation, bathroom renovation, etc.). Under pre-HSTPA law, landlords could recover IAI costs through a permanent rent increase. Under HSTPA, IAI rent increases are limited to $89/month per room (at a 1/168th monthly recovery for buildings with 35+ units, or 1/180th for smaller buildings), must be based on documented costs, and the increase is "temporary" — it expires after 30 years. Documentation of the improvements and costs is essential.
What is a Major Capital Improvement (MCI) and how does it affect rent?
An MCI is a building-wide capital improvement (new roof, new boiler, new windows, rewired electrical system) that benefits all tenants. Landlords can apply to DHCR for an MCI rent increase to recover the cost. Under HSTPA, the increase is temporary (expires after 30 years), calculated based on actual documented costs, and cannot exceed 2% of the tenant's rent in any one year. Applications must be filed with DHCR with detailed documentation: contractor invoices, permits, certificates of completion.
What is a rent overcharge complaint and how does a tenant file one?
A rent overcharge occurs when a landlord collects more rent than the legal regulated rent. Tenants can file an overcharge complaint with DHCR using Form RA-89. DHCR investigates by reviewing rent registration records and the apartment's rental history. If an overcharge is found, DHCR can order a rent reduction and a refund of up to two years of overcharges (or treble damages if the overcharge was willful). Under HSTPA, DHCR can look back further in rental history to detect overcharges, particularly in the context of fraudulent deregulation.
How does succession rights work for rent-stabilized apartments?
Succession rights allow family members or qualified non-traditional family members who co-resided with a rent-stabilized tenant for at least two years before the tenant's death or permanent departure to take over the lease in their own name at the same regulated rent. "Family member" is broadly defined under the rent stabilization code and includes spouses, domestic partners, children, parents, grandparents, grandchildren, and siblings. Landlords who receive a succession rights claim should request documentation of co-residency.
What apartments are exempt from rent stabilization?
Units exempt from stabilization include: apartments where the owner or their immediate family resides (owner-occupied buildings with fewer than six units have different rules), units that are permanently exempt due to the building's construction date or size, apartments in hotels with fewer than six units, and apartments that received a 421-g tax abatement for conversion from commercial to residential. Since HSTPA eliminated most deregulation pathways, truly deregulated apartments in older buildings are increasingly rare and require careful verification.
Can a co-op or condo apartment be rent-stabilized?
Yes. When a building converts to co-op or condo, rent-stabilized non-purchasing tenants retain their stabilization protections for as long as they remain in the apartment. Their apartments are "non-eviction plan" apartments — the conversion doesn't terminate their stabilization status. Subsequent purchases of those apartments by investors don't affect the tenant's stabilization protections. This is an important due diligence item when purchasing a co-op or condo apartment that is currently rented to a protected tenant.