03/17/2026
Title Tuesday #7 — Filed Maps vs. Tax Lots
The lot number on your tax bill may not actually be the legal lot that defines your property.
That surprises a lot of people.
In many parts of New York, legal descriptions come from filed subdivision maps recorded in the county land records — sometimes over 100 years ago.
In this week’s Title Tuesday, we explain:
• What a filed map is
• Why filed lot numbers and tax lot numbers don’t always match
• Why title professionals rely on recorded subdivision maps for legal descriptions
In Westchester County we regularly see subdivision maps filed in the early 1900s, while other parts of the market involve brand new subdivisions being filed today.
Regardless of age, once recorded those maps become part of the permanent land records and continue to define the legal layout of the land.
Understanding the difference between filed lots and tax parcels can help avoid confusion when reviewing contracts, surveys, and title reports.
💬 Question for agents and attorneys:
Have you ever run into a situation where the filed lot number didn’t match the tax lot number and it caused closing confusion?