The building by the numbers
| Metric | Value |
|---|---|
| Residential condo units on the roll | 57 |
| Median DOF market value | $802,058 |
| DOF market-value range | $177,382 – $3,154,238 |
| Units over the $1M surcharge threshold | 10 (18%) |
| Top-unit surcharge if non-primary | $165,597 / year |
Every condo and co-op in New York is tested against the pied-à-terre surcharge on its DOF market value — the "Market Value" line on the Notice of Property Value (an income-derived Department of Finance figure), not the 45%-of-market assessed value on your regular tax bill. In 100 Eleventh Avenue, that test splits the building: 18% of units clear the $1,000,000 market-value threshold and owe a flat 4%–6.5% of their full market value for any year they are not someone's primary residence, while the rest owe nothing under Phase 1 (through June 30, 2028). Phase 2 re-tests everyone in 2028.
Sample units from the FY 2026–27 roll
| Unit | DOF market value | Assessed value | Est. surcharge if non-primary |
|---|---|---|---|
| Apt 3A | $177,382 | $79,822 | $0 — under threshold |
| Apt 6B | $525,983 | $236,693 | $0 — under threshold |
| Apt 17A | $802,058 | $360,926 | $0 — under threshold |
| Apt 11B | $825,043 | $371,269 | $0 — under threshold |
| Apt 1718A | $3,154,238 | $1,419,407 | $165,597 / yr |
Owners in Chelsea: 18% of units here test over the $1M threshold, so the surcharge reaches a real share of this building. The exemptions are real, though: a unit occupied >half the year by you or an immediate family member, or leased arm's-length for 12+ months, owes nothing. The NYC pied-à-terre tax guide covers every rule; the free check below gives you your unit's exact numbers.
Frequently asked questions
Does the NYC pied-à-terre tax apply to 100 Eleventh Avenue?
It depends on the unit. On the FY 2026–27 DOF roll, 100 Eleventh Avenue in Chelsea has 57 residential units with a median DOF market value of $802,058. 10 of 57 units (18%) are over the $1,000,000 DOF market-value threshold and owe the surcharge for any year they are not a primary residence; the rest owe nothing under Phase 1. The surcharge is a flat 4%–6.5% of a unit's full DOF market value once it clears $1,000,000; units below that owe nothing under Phase 1, which runs through June 30, 2028.
How much is the pied-à-terre tax at 100 Eleventh Avenue?
It is charged on a unit's full DOF market value, not the lower assessed value on your regular tax bill. A 100 Eleventh Avenue unit at the building's median DOF market value of $802,058 would owe about $0 per year in years it is not a primary residence, and the highest-valued unit here would owe up to $165,597 per year. DOF market values in the building run from $177,382 to $3,154,238 on the FY 2026–27 roll.
Which units at 100 Eleventh Avenue owe the pied-à-terre surcharge?
10 of 57 units (18%) are over the $1,000,000 DOF market-value threshold and owe the surcharge for any year they are not a primary residence; the rest owe nothing under Phase 1. The test is on DOF market value — the income-derived "Market Value" figure on the Notice of Property Value — not the lower assessed value. Whether a given unit actually owes in a given year also depends on use: the surcharge applies only when the unit is not someone's primary residence.
How can I avoid the pied-à-terre tax at 100 Eleventh Avenue?
A 100 Eleventh Avenue unit owes nothing in any of three cases: it is occupied more than half the year by you or an immediate family member as a primary residence; it is leased to a tenant on an arm's-length lease of 12 months or more; or it is sold. Conquest can model the lease-versus-sell numbers for your specific unit at no cost.
How do I check my 100 Eleventh Avenue unit's DOF market value and surcharge for free?
Submit your address and unit at piedaterretax.nyc and Conquest emails you a report with your unit's official DOF market value (the surcharge base), your assessed value, the estimated pied-à-terre surcharge, and — if you are over the threshold — what a 12-month lease or a sale would look like. Usually within the hour.
What's YOUR unit's DOF market value?
Free emailed report: official DOF market value (the surcharge base), assessed value, surcharge test, and — if you're over the line — what a 12-month lease or a sale would look like. Usually within the hour.
Check My Unit — FreeFigures from the public NYC DOF assessment roll (dataset 8y4t-faws), FY 2026–27. Educational information, not tax or legal advice. The surcharge is the flat statutory rate applied to the unit's full DOF market value once it exceeds the $1M threshold. Unit designations are public record; no ownership information is shown.