How to Read a Co-op's Financial Statements Before You Offer: The 10 Numbers Upper East Side Buyers Should Check

A co-op apartment is a share in a corporation, so you are buying into the building's finances as well as the apartment. The statements show whether the building saves enough, owes too much or is heading toward a special assessment. Most buyers skim them. This guide covers the ten numbers worth checking, what each one tells you and what counts as a warning. Figures and benchmarks are as of October 13, 2026.

What are the ten numbers to check in a co-op's financials?

1. How big should the reserve fund be?

The reserve pays for repairs without an assessment. One co-op attorney's rule of thumb is reserves of about one-third of annual maintenance income, which he notes may be unrealistic for a building with major repairs ahead, per CooperatorNews. Another broker guide treats a reserve under 10% of the annual budget as a warning sign and 20% or more as a good sign. There is no official standard, so compare the reserve with the building's age and planned projects, and ask whether a reserve study or capital plan exists. Also ask whether the building has a flip tax, because many co-ops use it to rebuild reserves.

2. Does maintenance cover the building's expenses?

Compare maintenance income with operating expenses. A shortfall can be covered by flip taxes, sublet fees, laundry income or commercial rent. If it is not, expect a maintenance increase or an assessment, per CooperatorNews. Look at the cash flow statement for borrowing or transfers from reserves that cover operating costs. A deficit once is a note. A deficit every year is a pattern.

3. How have maintenance charges changed?

Ask for the last five years of maintenance charges and the current budget. Steady, modest increases suggest planning. Large jumps suggest catching up. Ask whether the board has discussed another increase. Our guide to maintenance and common charges explains what the monthly number covers.

4. What does the underlying mortgage look like?

Many co-ops carry a building mortgage, and you pay your share through maintenance. The footnotes usually give the terms. Check four things, per CooperatorNews:

• Maturity. A mortgage coming due soon will need refinancing. Many lenders want at least two years left before they lend to an individual buyer.
• Rate type. A fixed rate keeps the payment steady. An adjustable rate can raise maintenance.
• Amortization. Payments that reduce principal are safer than interest-only payments, which leave the full balance due at maturity.
• Balance. A large balance relative to the building's income leaves less room for repairs.

If the building sits on leased land, also ask for the ground lease expiration and how the rent resets, as covered in our under-$500,000 guide.

5. How much of maintenance goes to debt service?

Divide the building's yearly mortgage payments by its yearly maintenance income. Heavy debt reduces flexibility, because less of each owner's payment is left for repairs, per the Sapir Team. A low ratio is a good sign. There is no official cutoff, so compare buildings of similar size and age.

6. How many owners are behind on maintenance?

Ask for an aging schedule of what owners owe. One Upper East Side brokerage guide says arrears above roughly 5% to 10% of annual maintenance can signal cash-flow strain and assessment risk. Because the other owners cover the shortfall, high arrears put pressure on everyone's budget.

7. How many units does the sponsor still own?

A sponsor is the developer who converted the building to a co-op. Unsold sponsor units can mean a building that has not stabilized. Many lenders will not finance or refinance an underlying mortgage when sponsors own more than 30% of the apartments, and financial statements often leave the count out, so ask your agent for the number of unsold units, per CooperatorNews. Also ask what share of units are owned by entities rather than owner-occupants, which the Sapir Team lists as a risk when it is high and owner-occupancy is low.

8. What assessments have there been, and what is coming?

Ask for past assessments, approved projects and the plan for the next few years. Typical triggers are façade work under Local Law 11, roof, elevator or boiler replacement and energy compliance under Local Law 97, covered in our maintenance guide. Frequent or unpredictable assessments can mean the building is underfunded. A building with no reserve study and thin reserves in a pre-war structure deserves extra questions.

9. Are the statements audited and current?

Prefer recent audited statements with a clean opinion. A qualified, adverse or disclaimer opinion is a flag, per the Sapir Team. Check the date too. Statements for a December 31 fiscal year are usually released between March and May, so a buyer in February through April may see statements over 14 months old, according to CooperatorNews. Ask the managing agent for interim figures and the current budget.

10. What do the footnotes say?

The footnotes hold the details that the totals hide: mortgage terms, insurance, litigation and related-party arrangements. Look for pending lawsuits, façade or code violations without a plan, large insurance deductibles that could turn into assessments after a loss, and management contracts with related parties.

What does reading a building look like in practice?

The table shows how the numbers combine for a made-up building. It is an illustration, not a real co-op, and the benchmarks are guides rather than rules.

No single number decides it. A decent reserve can sit next to a mortgage due soon, and low arrears can sit next to a building with a deferred façade project. The pattern across several years matters more than any one figure.

Which documents should you ask for?

• Audited financial statements for the last two to three years, and a note on why any are only reviewed or compiled.
• The current budget and a budget-versus-actual comparison.
• A reserve study or capital plan, and bids for planned work.
• Board and shareholder meeting minutes for the past 12 to 36 months.
• An aging schedule of arrears.
• The underlying mortgage note, amortization schedule and any covenants.
• Insurance certificates and the deductibles.
• The proprietary lease, by-laws, house rules and, where relevant, the offering plan.

Your attorney reviews these after your offer is accepted, per our out-of-state buyer guide. Asking your agent for the headline numbers first can save time and legal fees on a building with obvious problems. For what the board reviews about you, read the co-op board package guide.

How do you start?

Tell us your budget, neighborhood and building type. We match you with a licensed New York agent who can pull the financial statements and the managing agent's answers for the buildings on your short list, so you compare buildings and not only apartments. Submit a private inquiry below.

General information only, not legal, accounting or financial advice. Benchmarks come from published guides, vary by building and are not official standards. The sample building is made up. Peter is licensed in Connecticut and does not represent buyers in New York. Have your New York attorney and, if needed, an accountant review any building's actual financials.