Buying a Two- to Four-Family House in NYC

You can buy a two- to four-family house in NYC with a regular owner-occupant mortgage, including FHA or VA, and the rent from the other units may help you qualify. Before you buy, confirm what leases and rent rules come with the tenants, and budget for landlord duties such as HPD registration once the building has three or more units.

Small multi-family houses make up much of the housing in Queens, Brooklyn, the Bronx and Staten Island. Living in one unit and renting the others (sometimes called "house hacking") can make ownership affordable, but you become a landlord on day one. Here's how the pieces fit.

How lenders count the rent from the other units

On a conventional loan sold to Fannie Mae, rental income rules live in Selling Guide section B3-3.1-08. For a two- to four-unit home that you'll live in, the key points are:

• When the lender uses rent from the other units, the qualifying rental income is added to your income, and the full housing payment (principal, interest, taxes, insurance and any association dues) counts in your debts. It isn't netted against the payment.
• The lender must report the gross rent for each unit, even if it doesn't use the rent to qualify you. Rent is documented with leases, the appraisal's rent figures or the appraiser's comparable rent schedule.
• Fannie Mae generally requires at least 12 months of property management experience before a lender can use positive rental income as qualifying income. First-time landlords may find only part of the rent counts, or that it offsets the payment instead. Ask your lender exactly how it will treat your rent.
• Fannie Mae publishes Form 1037, a worksheet for rental income on a 2–4 unit principal residence. Your loan officer will use it or something like it.

Lenders don't count the full rent dollar for dollar in most cases, so don't assume the tenants "pay the mortgage." Run the property as a business in the rental property cash flow calculator and check your ratio with the debt-to-income calculator.

Loan options compared

Compare payments with the FHA and VA loan calculators. Requirements can differ by unit count, so get a written pre-approval for the specific property type, and check the loan limit for your unit count with the conforming loan limit checker.

Tenants in place: what you inherit

When you buy an occupied house, existing leases generally stay in force and the tenants become your tenants. That affects when you can move in, what rent you collect, and whether you can get the unit you want to live in. Read what happens to a lease when a building is sold for the tenant side.

1. 1

   Get every lease and a rent roll

   Ask for signed leases, current rents, lease end dates, security deposits held and any arrears. Have your attorney put these representations in the contract.
2. 2

   Get estoppel letters if you can

   A tenant estoppel is a signed statement from each tenant confirming rent, deposit and lease terms. It catches side deals the seller didn’t mention.
3. 3

   Plan for the security deposits

   Have your attorney make sure the deposits are transferred to you at closing, since the tenants will look to you to return them. See NY security deposit rules for landlords.
4. 4

   Decide which unit you’ll live in

   If you need a unit delivered vacant, make it a condition of the contract. Don’t count on ending a tenancy after closing.
5. 5

   Check the building record

   Search the address on Roofy for open HPD and DOB violations and the certificate of occupancy. A "three-family" that is legally a two-family can affect insurance, financing and liability.

Can the apartments be rent regulated?

Usually not, but check. Rent-stabilized apartments are most often in buildings with six or more units built before 1974, so a typical two- to four-family house is not stabilized. Two exceptions are worth knowing:

• Rent control. Rent control generally applies to buildings built before February 1, 1947 where the tenant has lived continuously since before July 1, 1971. A long-time tenant in an older house can still be rent controlled.
• Tax-benefit programs. Stabilization can also attach to buildings that received J-51, 421-a or 421-g benefits, under each program's own rules.

You can ask NYS Homes and Community Renewal whether a unit is registered, or have the tenant request the rent history. See is my apartment rent stabilized for the full test.

Good Cause Eviction is another check. The law exempts an owner-occupied building with no more than ten units (RPL §214), and also exempts small landlords who own ten or fewer units in the state (RPL §211). If you live in the house, it generally doesn't apply, but confirm with our landlord guide.

Property taxes: Class 1

One- to three-unit residential properties are tax class 1. DOF assesses them at no more than 6% of market value, and assessed value can't rise more than 6% a year or 20% over five years unless you make physical changes such as an addition. The latest class 1 tax rate on DOF's rates page (tax year 2026) is 19.843%; check that page for any newer rate. A four-family house is outside class 1 (it falls in class 2), which is assessed and taxed differently, so price four-family houses with the right tax figure. Learn more in NYC property tax classes or estimate with the NYC property tax estimator.

Your duties as a landlord

• HPD registration. Owners of buildings with three or more units, and of one- or two-unit homes where neither the owner nor the owner's immediate family lives, must register with HPD every year. The deadline is September 1 and the $13 fee is billed with the property tax statement. Unregistered owners can't bring a nonpayment case in Housing Court and face civil penalties. If you live in one unit of a two-family, you don't need to register; a three-family must. See the HPD registration guide.
• Lead paint. NYC's Local Law 1 covers multiple dwellings (three or more units) built before 1960, those built from 1960 to 1978 if the owner knows there is lead-based paint, and tenant-occupied units in one- and two-family homes built before 1960. Read Local Law 1 duties for landlords.
• Heat, hot water and repairs. You must provide heat from October 1 to May 31 and hot water year-round. See heat rules for landlords and the landlord compliance calendar.
• Insurance and taxes. You need a policy that covers a rental property, and rental income is taxable. See landlord insurance and rental income taxes.

A quick underwriting checklist for the house itself

• Legal unit count on the certificate of occupancy matches what's being sold.
• Separate meters for gas and electric, or a plan for who pays which utility.
• Boiler age and fuel type; roof and facade condition; any open DOB permits.
• Water and sewer bill history (see the water bill estimator).
• Market rents for comparable units, not just the current rent roll.
• A home inspection that covers every unit, not only the vacant one.