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If you’re looking to buy a co-op in New York City, the term “sponsor unit” may have caught your eye while scanning listings.\u00a0This type of co-op apartment offers\u00a0several advantages, including the ability to skip the board approval process<\/a>\u2014a huge relief for many buyers.<\/p>\n Rather than being sold by an individual shareholder, a sponsor unit is an apartment still owned by the entity that originally converted the building into a co-op\u2014usually the developer or the original landlord. Here’s how that happens: When a rental building converts to a co-op (such as during the big conversion wave of the 1970s and 1980s), existing tenants can choose to buy their apartment or keep renting under their existing lease. Any apartments that tenants didn’t buy remain in the sponsor’s hands, and the sponsor continues collecting rent from them. Those units only hit the market as “sponsor units” once the tenant eventually moves out and the sponsor decides to sell.<\/p>\n Keep in mind that sponsor apartments can be more expensive than resale co-ops, despite the wear and tear from their rental histories. These places can also have higher closing costs than regular units.\u00a0<\/p>\n Consider this your go-to guide to sponsor apartments, so you know what’s involved in buying one.<\/p>\n [Editor’s note: An earlier version of this article was published in July 2025 and has been updated with new information for August 2026.]<\/em><\/p>\n Hands down, avoiding this step is the most significant advantage of buying a sponsor apartment. In a typical co-op purchase, the application process can feel invasive, with\u00a0scrutiny of your finances<\/a>\u00a0and<\/span>\u00a0your character.\u00a0<\/p>\n In addition to jumping through fewer financial hoops, the buying process is also quicker in a sponsor sale because you don\u2019t have to wait for the review of your board package and an interview. That said, your finances will still need to be assessed. But as long as your offer is accepted\u2014and assuming you can get a mortgage if you are financing\u2014you won\u2019t need further vetting.\u00a0\u00a0<\/p>\n \u201cBuying in a sponsor-owned co-op allows you to finance as much as the banks will allow you,\u201d said Melissa Cohn, regional vice president at William Raveis Mortgage.<\/a>\u00a0<\/p>\n So if you’re seeking a conforming loan\u2014the 2026 limit is $1,249,125 in NYC\u2014then it\u2019s possible to get up to 97 percent financing, she said. This is in contrast to a resale co-op, where the board often limits financing to 80 percent.<\/p>\n Sponsor units also open opportunities for buyers with less traditional incomes\u2014such as freelancers, contract workers, or self-employed individuals.\u00a0\u201cThere are banks that do not require income verification or use alternative means of verifying income if qualifying using conventional loans doesn\u2019t work,\u201d Cohn said.\u00a0<\/p>\n The bylaws of the individual co-op will dictate the rules about these transactions, but the sponsor doesn\u2019t necessarily have to abide by the same standards, said Patrick Lavell, branch manager at Crosscountry Mortgage, <\/a>noting that sponsor units continue to be a good alternative for some buyers who may not otherwise get approved by most co-op boards.<\/p>\n According to Lavell, down payment requirements, post-closing assets (aka \u201creserves\u201d), and debt-to-income ratios with many co-op boards are far more conservative than what lenders allow. That means a buyer could be approved for a mortgage but still be declined by a board due to insufficient assets or a debt-to-income ratio that’s too high.<\/p>\n “With a sponsor-owned unit, the buyer often bypasses the co-op board approval process and only needs to obtain underwriting approval from their lender before closing almost immediately,” he said.<\/p>\n Sponsor units will typically have been rented out for decades and, in many cases, are in original condition. They may have attractive prewar details, such as dentil moldings and herringbone floors. Of course, these architectural features may well be obscured behind the paint applied with every new lease, but they can give the place a character that can be difficult to find elsewhere.\u00a0<\/p>\n On the other hand, it\u2019s possible the units aren\u2019t in great shape and may require specialists to remove lead-based paint or asbestos\u2014or to do a full-scale renovation.<\/a> In that case, Karen Sonn, a closing attorney at Sonn Associates,<\/a> said the building\u2019s alteration agreement <\/a>or sales package may require the incoming buyer to do upgrades to the electric panel, windows, or radiators.\u00a0<\/p>\n As with all resales, some units will have been renovated to sell at a higher price, and these sponsor makeovers are not always necessarily in keeping with what you would do yourself. Some buyers find themselves re-renovating within a couple of years when the sponsor\u2019s upgrades are not up to par.<\/p>\n Compounding the matter, sponsors do not need board approvals for pre-sale renovations. So, for example, if the sponsor installed an in-unit washer\/dryer<\/a> in a building that doesn\u2019t permit it, the board will not grandfather that washer\/dryer to the next buyer (i.e., you!), Sonn said. In other words, no such luck\u2014and you may get stuck paying for the machines to be removed.<\/p>\n Be aware that pre-purchase inspections are essential for \u201cas is\u201d apartments, providing a clear picture of their overall condition and what may be involved in a renovation. Inspections can also help determine the quality of upgrades in renovated units.<\/p>\n If you purchase a sponsor unit, know that all renovation plans must be approved by the co-op board, the building architect, and the management company. Make sure to review the board\u2019s alteration policy before signing the contract.<\/p>\n \u201cMost buildings have strict rules for renovations: limits on the number of renovations at any one time [or on the] length of any renovation,\u201d Sonn said.<\/p>\n All things being equal, sponsor apartments can be more expensive than resale apartments.\u00a0<\/p>\n Jonathan Miller, president and CEO of real estate appraisal firm Miller Samuel,<\/a> said the higher price tag is partly due to sponsor apartments that are often newly renovated. But even if there are two similar renovated or unrenovated apartments and sponsor ownership is the only difference, \u201cyou might see a 5 percent or even a 10 percent premium on the sponsor unit.\u201d\u00a0<\/p>\n On the bright side, if you purchase from a sponsor, you typically do not have to pay the transfer tax (more on that below). Chalk it up to paying a premium for not having to go through the board approval process.<\/p>\n Miller said it’s not a hard-and-fast rule that sponsor apartments have a higher price tag, but in situations where a sponsor unit sells for less than a comparable resale, it\u2019s often because the sponsor apartment is \u201cfar more derelict in condition than a typical unrenovated non-sponsor apartment.”<\/p>\n Although most co-ops require buyers to put down 20 to 25 percent of the purchase price, you might be allowed to pay a smaller down payment of only 10 percent when buying a sponsor co-op.<\/p>\n However, you may face higher closing costs<\/a>\u00a0because buyers are expected to pay city and state transfer taxes on co-op sponsor sales.\u00a0<\/p>\n The city transfer tax is 1 percent of the purchase price for sales under $500,000, or 1.425 percent for purchases of $500,000 or more. Additionally,\u00a0 a 0.4 percent state transfer tax is applied across the board. You\u00a0may be able to negotiate with the seller to have them pay these taxes in a resale scenario, but this\u00a0is less likely if it\u2019s a sponsor unit.<\/p>\n It’s important to find out as much as possible<\/a>\u00a0about the building, the previous tenant, and the sponsor. Your broker and attorney can help you with this.\u00a0<\/p>\n Ask how many apartments the sponsor owns in the building and how many are occupied by owners. Why’s that? Banks are more likely to view the building as a sound investment if most units are privately owned, rather than rentals. Therefore, the higher the percentage of privately owned apartments in the building, the easier it should be to secure financing.<\/p>\n Lavell said one of the biggest hurdles for buyers seeking a mortgage is when a sponsor owns a large number of units. For example, if a single investor owns more than 40 percent of units, or if multiple investors own more than 50 percent of units, the building\u2019s owner-occupancy ratio would be too low for most lenders.\u00a0<\/p>\n That means that \u201cthe building would be\u00a0deemed non-warrantable,<\/a> which usually means that a fixed-rate loan may not be available or will be available at a higher rate,\u201d he said.<\/p>\n Renters in NYC have many protections. As with any rental unit, you must ensure that the prior rental lease was terminated correctly and that the tenant has vacated the property or was properly evicted.\u00a0\u00a0<\/p>\n What could happen? One scenario could be that a family member claims they were living with the previous tenant and were\u00a0unfairly evicted,<\/a> or that the apartment was vacated while they were on vacation.<\/p>\n Even though you don\u2019t have to get board approval for the purchase of a sponsor apartment, you will still have to abide by the building\u2019s rules and bylaws.\u00a0<\/a><\/p>\n Although the sponsor may not have \u201ccontrol\u201d as defined by the offering plan, there are buildings where the sponsor has a significant vested interest and remains involved. Some buildings actually benefit from the expertise and relationships that the original sponsor or successor sponsor has established, bypassing a management company and getting answers from an individual instead.<\/p>\n Sponsor units are located throughout the city. The majority are in prewar buildings on the Upper East and Upper West Side of Manhattan, although a few new development co-op buildings with sponsor units can also be found in the Bronx and Queens.<\/p>\n Depending on your needs and the available inventory, you should plan to devote six to 12 months to finding a suitable sponsor-owned apartment. And, this being NYC, some buyers who want to avoid board approval are always on the lookout for them.<\/p>\n Let your broker know you are interested in sponsor apartments. You can also look for them on listing sites<\/a> by entering the terms \u201csponsor unit\u201d or \u201cno board approval\u201d in the search parameters. Some listing sites, including StreetEasy, offer a specific “sponsor unit” filter (under the “more” tab) that returned 246 co-op listings across the five boroughs in a recent search.\u00a0<\/p>\n \u2014Previous versions of this article included writing and reporting by Tracy Kaler, Emily Myers, and Celia Young. It was updated for 2026 by Evelyn Battaglia.<\/em><\/p>\n \u00a0<\/p>\n<\/div>\nPro: No board approval is required<\/h2>\n
Pro: You often get original prewar details<\/h2>\n
Con: They often cost more than non-sponsor units<\/h2>\n
Con: The closing costs might be higher, too<\/h2>\n
You still need to do your due diligence<\/h2>\n
Beware of legal issues with the previous tenant<\/h2>\n
Building rules still apply<\/h2>\n
Where to find them<\/h2>\n