New York City Utility Company Real Estate Lots for Tax Mapping

New York City's Department of Finance maintains this monthly-updated table of Real Estate of Utility Company (REUC) lots for its Digital Tax Map. The data is extracted from the Department of Finance's internal system on the last Friday of each month and refreshed online on the 1st. It documents utility-owned land parcels, including identifiers and associated borough, block, and lot information.

Use Cases

• Link utility-owned parcels to their primary tax lots using the APPURTENANT_BBL and PARID columns for property roll analysis.
• Track historical changes in utility lot status and effective tax year using the EFFECTIVE_TAX_YEAR and DELETED_FLAG columns.
• Analyze the spatial distribution of utility company assets across boroughs using the APPURTENANT_BORO, APPURTENANT_BLOCK, and APPURTENANT_LOT fields.
• Reconcile legacy and current parcel identification systems by joining on LEGACY_REUC_NUMBER and IDENT fields.

Strengths

• Data is refreshed on a monthly schedule, with extracts on the last Friday and updates on the 1st.
• Provides 10 distinct columns for parcel identification, status, and geographic linkage.
• Maintained with a failover system using alternating monthly data sets (Set A and Set B) for reliability.

Limitations

• The dataset may not reflect the latest changes from other city systems, such as exemptions or building data.
• Sample size and total row count are unknown, preventing assessment of coverage completeness.
• The disclaimer states the data is for informational purposes and is not guaranteed to be accurate as of the current date.

Provenance

Source

New York City Department of Finance, via data.cityofnewyork.us.

Collection Method

Extracted from the Department of Finance's internal system.

Time Range

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Freshness

Monthly updates, last updated 2026-04 03.

Geography

New York City, New York, USA.