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Mamdani Extends Pied-à-Terre Exemption Deadline to Sept. 18

City officials say the extra month will let notified owners assemble proof that a home is their primary residence to avoid the new surcharge.

Overview

  • Mayor Zohran Mamdani announced the deadline extension on Saturday, giving property owners until Sept. 18 to file exemption claims or appeals after the July 1 surcharge took effect.
  • The surcharge applies to one- to three-family homes assessed above $5 million and condo or co-op units assessed above $1 million for the 2026–27 and 2027–28 tax years.
  • The Department of Finance clarified that it mailed preliminary notices saying “You may be subject to…” to about 17,000 owners and that only those recipients need submit exemption paperwork.
  • City officials moved to add staff, expand 311 support and boost appeals capacity after publishing a supplemental market-value roll of roughly 900,000 entries that caused confusion and privacy concerns.
  • Revenue from the levy remains uncertain because exemptions, appeals, legal challenges, and possible market reactions could change collections and the program is already drawing political and business pushback.