Buying a Co-op With a Guarantor or for Your Child

Some NYC co-ops let a parent guarantee a buyer or co-own the apartment with them, and many do not. Each building sets its own policy. Condos are usually far more flexible because there is normally no board approval of the buyer, just a right of first refusal.

If you are a parent helping a child, or a young buyer whose income or savings fall short, find out the building’s policy before you make an offer. The most common setups are a guarantor, a co-purchaser on the shares, a gift toward the down payment, and a parent buying the apartment outright for a child. Each one carries different paperwork, lender rules and tax points.

The four ways parents usually help

1. A guarantor

The child buys the shares alone. A parent signs a guaranty promising to cover maintenance and other obligations under the proprietary lease if the child cannot. The board then looks at the guarantor’s finances as well as the buyer’s. Buildings that accept guarantors set their own standards for the guarantor’s income and assets and may add other conditions, such as who can serve as guarantor. These are building rules, so ask the listing agent or managing agent for the written policy.

A guarantor to the co-op is different from a guarantor on the share loan. A lender may treat the parent as a co-signer on the loan. Under Fannie Mae’s rules, a guarantor or co-signer signs the note, is jointly liable for it, and has no ownership interest in the property.

2. Co-purchasing

The parent and child both own the shares and both sign the proprietary lease. Some boards accept this when the child lives there. Others refuse any shareholder who will not live in the apartment, because many co-ops limit purchases to owner-occupants and restrict subletting. How the two of you hold the shares (joint tenants or tenants in common) matters later at death or sale. See ways to hold title in New York.

For a conventional loan, Fannie Mae calls a co-owner who will not live there a non-occupant borrower. It lets a non-occupant borrower’s income help qualify, but it caps the loan-to-value at 90% for manually underwritten loans and 95% for loans run through its automated system. When a manually underwritten loan uses a non-occupant’s income, the debt-to-income ratio is figured on the occupying borrower’s income alone and may not exceed 43%. Co-op boards set their own, often stricter, limits on financing.

3. A gift toward the down payment

This is the simplest option and the one most co-ops are used to. The child is the only buyer and must meet the board’s income and post-closing liquidity tests on their own. The gift covers the down payment and closing costs. Boards look closely at whether the gift is really a gift. Expect to provide a signed gift letter and bank statements showing the transfer. Our gift funds guide covers lender rules in detail.

4. A parent buying for a child

Here the parent owns the apartment and the child lives in it. Co-ops tend to resist this, and many forbid it, because the shareholder is not the occupant. Buildings that allow it may treat it like a sublet, with fees and term limits, or require the parent to sign a guaranty for the occupant. Condos are more likely to allow it, subject to the building’s rules on leasing and occupancy.

Fannie Mae has a narrow exception that lets a parent finance a home for a child as a principal residence. A parent or legal guardian can do so for a disabled adult child who is unable to work or does not have enough income to qualify on their own. Outside those exceptions, a parent buying for an adult child is usually financed as a second home or an investment property, which can mean different pricing and down payment rules.

How to find out what a building allows

1. 1

   Ask before you offer

   Ask the listing agent, in writing, whether the board accepts guarantors, co-purchasers who will not live there, and parents buying for children. Ask what financial standards a guarantor must meet.
2. 2

   Get the purchase application early

   The board package lists the forms for guarantors and co-purchasers. Use our board package checklist to collect tax returns, bank statements and reference letters for each person.
3. 3

   Have your attorney review the offering plan and house rules

   Sublet, occupancy and financing rules live in the proprietary lease, bylaws and house rules. See co-op due diligence.
4. 4

   Tell the lender how the deal is structured

   A guarantor, co-borrower or gift changes the loan application. The lender needs to know before it issues a Loan Estimate.
5. 5

   Run the numbers for the board’s tests

   Test the child’s finances alone and with the guarantor using the co-op board approval calculator.

Paperwork you should expect

Tax points to raise with a professional

These are general points. Your accountant or attorney should apply them to your situation.

• Gift tax returns. The IRS annual exclusion is $19,000 per recipient for 2026. Spouses who split gifts can give $38,000. A larger gift usually means filing Form 709, but tax is owed only after lifetime gifts exceed the basic exclusion amount, which the IRS lists as $15,000,000 for 2026.
• New York estate addback. New York adds taxable gifts made within three years of death back into a New York resident’s estate, with some exceptions. The 2026 New York basic exclusion amount is $7,350,000.
• Basis if a parent later gives the apartment. If a parent gifts the apartment instead of leaving it at death, the child generally takes the parent’s adjusted basis for figuring gain (IRS Publication 551). That can mean a larger taxable gain when the child sells. See capital gains tax on a home sale.
• Property tax breaks. The NYC co-op and condo abatement requires the unit to be the owner’s primary residence, and owners can hold no more than three residential units in one development. A parent who owns a unit a child lives in may not qualify. Ask the Department of Finance through 311 about your facts. Estimate the effect with the abatement estimator.

Bottom line

Start with the building, not the bank. A parent’s money can only help if the co-op accepts the structure. If the building you love refuses guarantors, a condo or a co-op with a written guarantor policy may be a better fit. Once you know the rules, line up the lender, the gift letter and the tax advice before you sign the contract.