By John-Scott Johnson · October 2026
Understand the cash you need, the building rules to check and the steps from your first offer to closing.
Buying a co-op in NYC means finding an apartment you love and qualifying for the building that comes with it. Your budget, the co-op’s rules and its board approval process all shape what you can buy.
The best time to understand those requirements is before you make an offer. Here is how to approach a co-op purchase, what to prepare and where an experienced buyer’s agent can help.
What you own when you buy a co-op
When you buy a co-op, you purchase shares in the corporation that owns the building. Those shares come with a proprietary lease giving you the right to occupy your apartment.
You also pay monthly maintenance toward the building’s expenses, which generally include property taxes, staffing, upkeep and payments on any building mortgage. Ask what is included and whether there are additional charges.
If you are still deciding between property types, our co-op versus condo guide explains the differences.
Start with the full cash requirement
A bank’s pre-approval is a useful starting point. A co-op board also reviews your finances and may require a larger down payment or more savings than your lender does.
Many NYC co-ops require at least 20% down; some require more. The building will also consider your income, monthly debt payments and the accessible savings you will have after buying. Those remaining savings are often called post-closing liquidity.
For example, a $1.5 million apartment with a 20% down payment requires $300,000 toward the purchase price. You also need money for closing costs. If that building requires two years of reserves and your mortgage and maintenance total $7,000 a month, it would expect another $168,000 remaining after closing.
That reserve money stays yours. It is not an extra payment to the building. Each co-op sets its own requirements and decides which assets it will count, so confirm the rules for the apartment you are considering.
For a broader budgeting checklist, read how much cash you need to buy an apartment in NYC.
Check the building rules before making an offer
A well-priced apartment still needs to fit how you intend to live. Ask about:
Subletting and whether you could rent out the apartment later.
Renovation approvals, permitted work and construction schedules.
Pets, use as a second home and any occupancy restrictions.
Financial help from family, including gifts or purchasing together.
Transfer fees, often called flip taxes, and who pays them.
Get answers from the building’s documents or management. If a particular use matters to you, have your attorney confirm it before you sign the contract.
Look closely at the apartment and the building
Compare the asking price with recent sales, taking account of the apartment’s condition, layout, floor, light and monthly maintenance. A renovation that looks straightforward may also require building approval and a larger budget than you expect.
Your attorney should review the available building documents, including financial statements, board minutes, the proprietary lease and offering plan. Ask about planned major work, assessments, building debt and any known problems that could affect your costs.
An assessment is an additional charge to shareholders, often used to fund building work. The amount and duration matter to your monthly budget. Our guide to building financials explains what to look for.
Make an offer and complete the contract review
Your offer should set out the price, financing, proposed timing and any important conditions. A seller will also want confidence that you can meet the building’s financial requirements. Expect to provide a summary of your finances and, if you are borrowing, a lender’s pre-approval.
Once an offer is accepted, your attorney reviews the contract and building documents and negotiates the protections appropriate to your purchase. Discuss financing and board approval provisions, the deposit and what happens if the purchase cannot proceed.
An accepted offer generally does not make the purchase binding by itself. Your attorney will guide you through signing the contract, paying the contract deposit and obtaining the seller’s signed contract. Our NYC offer guide covers the earlier steps.
Prepare the co-op board package
The board package is the building’s purchase application. It brings together the documents the board uses to review you as a prospective shareholder. Follow that building’s checklist; requirements differ.
Common requests include:
A completed application and signed purchase contract.
A financial statement supported by bank and investment statements.
Tax returns and employment or income documentation.
Personal, professional and landlord reference letters.
Loan documents if financing, plus authorizations and application fees.
Start collecting these documents early. Check that the figures agree across the application and supporting statements, and explain unusual income or transactions clearly.
BRN helps you organize and review the package before submission. For help with specific documents, see our financial statement guide and co-op reference letter examples.
Complete the board review and interview
After reviewing your application, the board may request more information and invite you to an interview. Be familiar with your application, answer questions directly and discuss your plans for the apartment consistently with the building’s rules. An interview invitation is encouraging, but approval is not assured.
NYC’s co-op application timing law now generally requires covered buildings to acknowledge an application within 15 days and say whether it is complete. A decision is generally due within 45 days after a complete application is acknowledged or deemed complete. Exceptions, permitted extensions and summer recess rules can affect those deadlines. Your attorney should confirm how the law applies to your building.
Board review is only part of the purchase timeline. Financing, contract review and closing arrangements also take time, so keep your moving plans flexible until the transaction team confirms a closing date.
Plan for closing costs and the final steps
Co-op buyers generally avoid mortgage recording tax and conventional owner’s title insurance. You still need to budget for attorney fees, applicable lender charges, building fees and the mansion tax on purchases of $1 million or more. The mansion tax rate increases at higher purchase prices.
Before closing, your attorney and lender confirm the amounts due and how funds must be delivered. Arrange a final walkthrough and confirm the building’s move-in requirements. Our NYC buyer closing costs guide provides more detail.
How BRN helps you buy a co-op
You work directly with our senior partners on the search, property analysis, offer and negotiation. We help prepare your board package and keep the purchase moving alongside your attorney and lender.
You never pay BRN a brokerage fee. Our compensation comes from the seller, and we return half of the commission we receive to you, up to 1.5% of the purchase price.
For a real example, BRN represented the buyers of a $3.8 million Greenwich Village co-op at 101 West 12th Street. BRN received a $114,000 commission and returned $57,000 to the buyers. Your return depends on the commission BRN receives for your purchase; we confirm the expected amount for the property you are considering.
We send you a check or wire the money to you right after closing, once BRN has received its commission. If you prefer, we can work with your attorney and lender to apply the return toward eligible closing costs. For financed purchases, the arrangement must meet your lender’s requirements.
Considering a co-op in Manhattan or Brooklyn
Whether you are beginning a search or already have an apartment in mind, a BRN partner can help you assess the price, building requirements and next steps.
