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Due diligence pitfalls in New York commercial property deals

On Behalf of | Jul 17, 2026 | Real estate transactions

A commercial property purchase may be the largest single investment you ever make. You could commit millions of dollars to one building based largely on what the seller tells you. One overlooked lien, code violation or inflated rent roll could erase years of expected returns. Careful due diligence can help you find these problems before you sign. 

Regulatory rules that surprise buyers

New York City enforces building rules that many buyers underestimate. Local Law 97 of 2019 caps carbon emissions for buildings over 25,000 square feet. Owners who miss reduction targets may face steep annual fines.

Local Law 11 of 1998 requires periodic facade inspections for taller buildings. Mandated repairs can cost far more than a seller admits. You should review a building’s compliance history before you commit.

Physical, financial and title risks

Several other issues can hide beneath a clean-looking deal. Watch for these common problems:

  • Environmental contamination: A Phase I site assessment can reveal past industrial uses that may require costly cleanup.
  • Title defects: Unrecorded easements or restrictive covenants could limit how you use the property.
  • Overstated income: Rent rolls may not match actual collections, so verify leases and tenant payments.
  • Hidden liens: Unpaid water and sewer charges can survive the transfer of title in New York City.

Each of these risks could shrink your returns or block your plans entirely. Early discovery gives you room to renegotiate or walk away.

New ownership disclosure duties

Your entity structure now carries reporting obligations too. New York’s LLC Transparency Act (2023 N.Y. Senate Bill S995-B) requires certain non-U.S. LLCs to report beneficial ownership information to the state. 

Steps that protect your investment

A thorough review covers emissions compliance, facade obligations, environmental history, title records and ownership filings. Each check may uncover costs the seller never mentioned. Knowing these risks early helps you negotiate a fair price or exit a bad deal. 

Many buyers build a review period into the purchase agreement when buying or selling property. If your deal becomes contested or a serious defect surfaces, an attorney’s input may help you weigh your options.