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The Due Diligence Process for NY Condominiums and Cooperatives

Author: Jesse M. Dimitro

Date: October 31, 2025

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The Due Diligence Process for NY Condominiums and Cooperatives

While the New York City real estate market can be extremely competitive, moving too quickly often backfires. Before purchasing a condominium or cooperative in New York City, it is important to do you homework.

Purchasing property in NYC can involve a dizzying number of legal issues. These include condo and co-op rules, rent restrictions, and complex title histories. The due diligence process is essential to make sure you are making a sound investment. It can also help avoid costly surprises down the road.

What Is Due Diligence?

In the context of residential real estate in New York, due diligence refers to the process of investigating and evaluating a property, similar to how due diligence works in business transactions where thorough investigation protects all parties involved.

Gathering and analyzing information about a property can be one of most complicated and time consuming parts of a real estate transaction. However, it is critical to minimizing your risks.

Should your due diligence uncover unexpected issues, you can use the information to renegotiate or cancel the deal. For instance, if your inspection reveals that repairs are needed, you can request that some or all the repair work is completed prior to closing. Similarly, if the building’s financial reserves are weaker than expected, you can cancel the deal. The same applies if there is an unexpected assessment or increase in monthly charges.

Due Diligence for Condos vs. Co-Ops

The nature of the due diligence process will be informed by the nature of the property you are interested in acquiring. It will also depend on any unique risks that it may have. In a cooperative (co-op), you purchase shares in a corporation that owns the building. You also execute a lease that allows you to occupy a certain unit. Because a co-op owner doesn’t actually own the unit, but is rather a lessee, due diligence must focus on several areas. These include the unit, the property, and the entity that owns it. Unit owners must also be approved by the co-op board. It’s important to investigate the vetting process and your chances of approval.

A condominium or “condo” is a private residence in a multiunit building or complex. It also includes ownership of certain common areas. Unlike a co-op owner, a condo is considered real estate. The owner holds title to his or her individual unit. However, condo owners generally only own the inside of the unit. They don’t own the exterior or the land upon which it sits. While condo owners often face fewer restrictions than co-op owners, conducting due diligence is still important. This includes investigating the health of the building, as well as the board managing it.

Condos and co-ops also both have governing boards. These boards are responsible for adopting and enforcing the rules that govern the community. There are also costs and fees associated with condo and co-op ownership. Because they can differ in both type and amount, it is important to do your research on all financial obligations, including understanding how real estate transfer taxes can significantly impact property transactions in the region.

Due Diligence Checklist for NY Condominiums and Cooperatives

Every NYC property has its own rules, fees, policies, and community dynamics. This makes it imperative for buyers to conduct thorough research. Below are several key issues that should be addressed during the due diligence process:

Audited Financial Statements

Your due diligence review should include a thorough review of the board’s audited financial statements. This verifies that it hasn’t been operating at a deficit. It also confirms that there is a sufficient amount of money held in reserve for unexpected expenses. Other issues to look out for include upcoming assessments and a history of frequent increases in common charges.

Board Minutes

Board minutes from the past few years can provide a wealth of information. This includes discussions about major capital projects, structural problems, maintenance issues, and owner complaints. It may also reveal disputes between neighbors and litigation.

Rules and By-laws

Both co-ops and condos have rules that may impact what you can do with your unit. This includes leasing it, renovating it, or even adopting a pet. It is also important to review the property’s governing documents. These determine your ongoing financial responsibilities with maintenance fees, common charges, building improvements, taxes, etc.

Attorney Due Diligence Questionnaire

A Due Diligence Questionnaire is a detailed list of questions. These are typically answered by the building’s management or board. The questionnaire helps buyers and their attorneys review the property’s financial health, governance, maintenance issues, and legal matters. It’s important because it uncovers potential risks or liabilities before purchase. This ensures the buyer makes an informed investment.

Property Inspection

Prospective purchasers should always conduct a thorough inspection of the unit and larger building, and understanding construction law principles can help identify potential structural or regulatory issues that may impact the property’s value.

Depending on the circumstances, it may also be wise to conduct additional assessments. These could include an environmental assessment, structural engineer inspection, or termite/pest inspection.

Title/Permit Search

A title search will reveal information about the property. This includes its current and past ownership, as well as the existence of liens, encumbrances, and easements.

Memorialize Seller Representations in Your Contract

Sellers often make representations about the property during the course of the due diligence process. Because oral statements are generally unenforceable, any seller representations should be memorialized in the final written agreement. Common seller representations when buying a condo or co-op include:

  • Seller has authority to sell the property.
  • There are no legal actions pending/threatened.
  • There are no leaks affecting the unit.
  • There is no mold affecting the unit.
  • There are no odors or smells affecting the unit.
  • There is no litigation against the unit.
  • All disclosures are true and accurate and will be at time of closing.
  • There are no liens or encumbrances at time of closing; and
  • All required government filings have been timely filed.

Work With an Experienced NYC Real Estate Attorney

A knowledgeable New York City real estate attorney can help you successfully navigate the due diligence process. They can help you make a fully informed decision.

At Scarinci Hollenbeck, our attorneys have extensive experience in NYC condominium and co-op transactions. We walk our clients through every step of the process. This ensures a smooth and successful transaction.

No Aspect of the advertisement has been approved by the Supreme Court. Results may vary depending on your particular facts and legal circumstances.

Scarinci Hollenbeck, LLC, LLC

Lawyers mentioned in this article

Attorney, Jesse M. Dimitro

Jesse M. Dimitro

Senior Associate

Scarinci Hollenbeck, LLC, LLC

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