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Buildings·Financial District·Block Hall·Sold prices

21 South William StreetRecorded sales & closing prices

21 South William Street, New York, NY 10004

69 recorded closings, 2006–2023. Sortable and searchable below.

Recorded closings
69
Date range
2006–2023
Median $/sf
$1,137
2023 · adjusted
Listing discount
2.8%
median, from last ask
Price range
$506K – $2.4M
Price shift · median $/sf · constant-quality
Since 2006
▲ +0.8%
10-Year
▲ +11.2%
Since 2022
▲ +1.9%
1-Year
▲ +1.9%

Change in the building’s median $/sf over each window, adjusted to a constant-quality (average-floor) unit so it reflects price — not which floors happened to sell. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.

The complete recorded-sale history for Block Hall, compiled from NYC Department of Finance transfer records and verified listing data, then enriched apartment-by-apartment by The Roebling Team research desk. Across sales with a public asking price, the building carries a median listing discount of 2.8% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.

Price per square foot over time

64 sales with a known square footage, by closing date.

$798$1,151$1,503'06'09'12'15'18'21'232D · $1,126/sf · 20062A · $923/sf · 20063D · $1,056/sf · 20063B · $1,007/sf · 20062B · $1,004/sf · 20063E · $1,169/sf · 20067A · $1,222/sf · 20064B · $1,038/sf · 20066D · $1,252/sf · 20062C · $1,132/sf · 20064E · $1,153/sf · 20064D · $1,185/sf · 20067E · $1,200/sf · 20067D · $1,239/sf · 20064A · $973/sf · 20067C · $1,269/sf · 20066C · $1,199/sf · 20067B · $1,114/sf · 20066A · $1,119/sf · 20065B · $1,037/sf · 20063C · $1,109/sf · 20063A · $1,115/sf · 20065D · $1,190/sf · 20065E · $1,169/sf · 20064C · $1,214/sf · 20062E · $1,122/sf · 20065C · $1,164/sf · 20066B · $945/sf · 20066E · $1,130/sf · 20065A · $951/sf · 20067C · $1,313/sf · 2007PH · $1,269/sf · 20073C · $1,141/sf · 20085C · $1,465/sf · 20083E · $908/sf · 20095B · $836/sf · 20107D · $1,009/sf · 20132B · $972/sf · 20134A · $1,096/sf · 20136E · $1,017/sf · 20134B · $1,105/sf · 20135A · $1,085/sf · 20142C · $1,166/sf · 20146B · $1,154/sf · 20143C · $1,181/sf · 20143B · $1,079/sf · 20147A · $1,184/sf · 20155A · $1,150/sf · 20153A · $1,287/sf · 20167B · $1,267/sf · 20166B · $1,154/sf · 20163B · $1,079/sf · 20166D · $1,084/sf · 20162B · $1,158/sf · 20174C · $1,418/sf · 20173C · $1,364/sf · 20187A · $1,272/sf · 20186E · $1,196/sf · 20182E · $1,053/sf · 20216D · $1,138/sf · 20215D · $1,186/sf · 20226B · $1,108/sf · 20233D · $1,121/sf · 20232D · $1,246/sf · 2023
Each dot is one recorded sale with a known interior square footage, plotted by closing date against price per square foot. The line is the median $/sf each year, adjusted to a constant-quality (average-floor) unit — so it reflects price movement, not which floors happened to sell that year. Individual sale prices in the table below are unadjusted — and you can click any dot to jump straight to that sale.
Building average$1,137/sfevery bar sits above or below this · 0%

The vertical premium

The climb in price per square foot as you rise through the building — light and views included, time-adjusted to today’s market.

Floors 4–6 3 sales
$1,146/sf+1%
Floors 2–3 3 sales
$1,128/sf-1%

Premium by line

What each line’s exposure is worth — its light, outlook, and orientation — measured against the building’s average sale.

Line D 4 sales
$1,170/sf+3%

Recent closings

The building’s 10 most recent market sales.

DateUnitApartmentPrice$/sfvs. Ask
Sep 22, 20232D1 BR · 1 BA · 700 sf$872,000$1,246-6.7%
Jun 13, 20233D1 BR · 1 BA · 745 sf$835,000$1,121-1.8%
Jan 17, 20236B1 BR · 1 BA · 641 sf$710,000$1,108-5.2%
Jul 22, 20225D1 BR · 1 BA · 738 sf$875,000$1,186—
Aug 30, 20216D1 BR · 1 BA · 738 sf$840,000$1,138—
Aug 12, 20212E1 BR · 1 BA · 698 sf$735,000$1,053-1.9%
Dec 31, 20186E1 BR · 1 BA · 698 sf$835,000$1,196-2.8%
Jul 26, 20186A5 BR$585,000-14.6%
Mar 20, 20187A5 BR · 452 sf$575,000$1,272-1.7%
Jan 29, 20183C1 BR · 1 BA · 495 sf$675,000$1,364—

The retrade record

Lines that have changed hands more than once in the public record — the building’s appreciation arc, apartment by apartment. Showing the 24 strongest of 25 repeat-trade lines; sort the table below by Unit to see every line’s full history.

5A · 674 sf+31%
$590,585 ($951/sf) 2006 → $673,800 ($1,085/sf) 2014 → $775,000 ($1,150/sf) 2015
7B · 600 sf+28%
$594,658 ($1,114/sf) 2006 → $760,000 ($1,267/sf) 2016
5C · 495 sf+26%
$576,330 ($1,164/sf) 2006 → $725,000 ($1,465/sf) 2008
4C · 529 sf+25%
$600,768 ($1,214/sf) 2006 → $750,000 ($1,418/sf) 2017
2B · 682 sf+24%
$635,388 ($1,004/sf) 2006 → $695,000 ($972/sf) 2013 → $790,000 ($1,158/sf) 2017
3C · 495 sf+23%
$548,837 ($1,109/sf) 2006 → $565,000 ($1,141/sf) 2008 → $625,000 ($1,181/sf) 2014 → $675,000 ($1,364/sf) 2018
2D · 700 sf+21%
$722,958 ($1,126/sf) 2006 → $872,000 ($1,246/sf) 2023
6B · 641 sf+17%
$605,859 ($945/sf) 2006 → $740,000 ($1,154/sf) 2014 → $740,000 ($1,154/sf) 2016 → $710,000 ($1,108/sf) 2023
3B · 709 sf+16%
$660,844 ($1,007/sf) 2006 → $765,000 ($1,079/sf) 2014 → $765,000 ($1,079/sf) 2016
6E · 698 sf+15%
$722,958 ($1,130/sf) 2006 → $710,000 ($1,017/sf) 2013 → $835,000 ($1,196/sf) 2018
3A · 602 sf+15%
$671,027 ($1,115/sf) 2006 → $775,000 ($1,287/sf) 2016
3D · 745 sf+14%
$733,140 ($1,056/sf) 2006 → $835,000 ($1,121/sf) 2023
6A+13%
$518,289 ($1,119/sf) 2006 → $585,000 2018
4A · 602 sf+13%
$585,494 ($973/sf) 2006 → $660,000 ($1,096/sf) 2013
5D · 738 sf+7%
$816,637 ($1,190/sf) 2006 → $875,000 ($1,186/sf) 2022
4B · 656 sf+6%
$681,209 ($1,038/sf) 2006 → $725,000 ($1,105/sf) 2013
7E+4%
$767,761 ($1,200/sf) 2006 → $795,000 2014
2C · 494 sf+3%
$559,019 ($1,132/sf) 2006 → $576,000 ($1,166/sf) 2014
7C+3%
$628,260 ($1,269/sf) 2006 → $650,000 ($1,313/sf) 2007 → $650,000 2013
2E · 698 sf+2%
$717,866 ($1,122/sf) 2006 → $735,000 ($1,053/sf) 2021
7A · 452 sf+0%
$575,000 ($1,272/sf) → $505,986 ($1,222/sf) 2006 → $535,000 ($1,184/sf) 2015 → $575,000 ($1,272/sf) 2018
6D · 738 sf-2%
$860,421 ($1,252/sf) 2006 → $800,000 ($1,084/sf) 2016 → $840,000 ($1,138/sf) 2021
7D · 743 sf-13%
$857,367 ($1,239/sf) 2006 → $750,000 ($1,009/sf) 2013
5B · 700 sf-13%
$674,082 ($1,037/sf) 2006 → $585,000 ($836/sf) 2010

Every recorded sale

Sort any column; filter by unit or keyword. Prices are the recorded transfer amount at the NYC Department of Finance. Every sale sits in one of three states: counted in the building’s medians and trend; shown but excluded as a non-arms-length or nominal transfer; or shown and ⚑ flagged for review — a possible duplicate filing or an extreme $/sf outlier, held out of the statistics pending manual verification rather than allowed to move them.

69 recorded sales
Apartment
Sep 22, 20232D1 BR · 1 BA700$872,000$1,246-6.7%
Jun 13, 20233D1 BR · 1 BA745$835,000$1,121-1.8%
Jan 17, 20236B1 BR · 1 BA641$710,000$1,108-5.2%
Jul 22, 20225D1 BR · 1 BA738$875,000$1,186—
Aug 30, 20216D1 BR · 1 BA738$840,000$1,138—
Aug 12, 20212E1 BR · 1 BA698$735,000$1,053-1.9%
Dec 31, 20186E1 BR · 1 BA698$835,000$1,196-2.8%
Jul 26, 20186A5 BR—$585,000—-14.6%
Mar 20, 20187A5 BR452$575,000$1,272-1.7%
Jan 29, 20183C1 BR · 1 BA495$675,000$1,364—
Dec 15, 20174C1 BR · 1 BA529$750,000$1,418—
May 18, 20172B1 BR · 1 BA682$790,000$1,158+0.6%
Nov 14, 20166D1 BR · 1 BA738$800,000$1,084+3.2%
Nov 1, 20166B1 BR641$740,000$1,154—
Nov 1, 20163B1 BR709$765,000$1,079—
Oct 24, 20167B1 BR · 1 BA600$760,000$1,267-1.9%
Mar 3, 20163A1 BR602$775,000$1,287—
Jul 24, 20155A1 BR674$775,000$1,150-2.5%
Jul 17, 20157A5 BR452$535,000$1,184—
Jun 29, 2015PH3 BRnon-market transfer (excluded from $/sf & trends)2,019$1,245,000——
Dec 4, 20143B1 BR · 1 BA709$765,000$1,079-4.3%
Nov 11, 20143C1 BR · 1 BA529$625,000$1,181-2.3%
Oct 22, 20146B1 BR · 1 BA641$740,000$1,154—
May 23, 20142C494$576,000$1,166—
Apr 10, 20147E1 BR · 1 BA—$795,000—-2.5%
Feb 20, 20145A1 BR621$673,800$1,085—
Nov 22, 20134B1 BR656$725,000$1,105—
Nov 1, 20137C1 BR—$650,000—-6.5%
Sep 23, 20136E1 BR698$710,000$1,017-7.7%
Sep 13, 20134A602$660,000$1,096—
Jun 12, 20132B1 BR · 1 BA715$695,000$972-0.6%
Jun 6, 20137D1 BR · 1 BA743$750,000$1,009-3.2%
May 6, 20105B1 BR700$585,000$836-6.4%
Dec 17, 20093E1 BR699$635,000$908-5.9%
Dec 11, 20085C495$725,000$1,465—
Sep 15, 20083C1 BR · 1 BA495$565,000$1,141—
Jun 11, 2007PH3 BR · 2.5 BA1,891$2,400,000$1,269—
May 15, 20077C1 BR495$650,000$1,313—
Sep 26, 20065A1 BR621$590,585$951—
Aug 18, 20066B1 BR641$605,859$945—
Aug 18, 20066E1 BR640$722,958$1,130—
Jun 21, 20065C495$576,330$1,164—
Jun 14, 20064C1 BR · 1 BA495$600,768$1,214—
Jun 14, 20062E1 BR · 1 BA640$717,866$1,122—
Jun 9, 20065D1 BR · 1 BA686$816,637$1,190—
Jun 9, 20065E1 BR · 1 BA640$748,414$1,169—
Jun 7, 20063A1 BR602$671,027$1,115—
May 31, 20063C1 BR · 1 BA495$548,837$1,109—
May 23, 20065B1 BR650$674,082$1,037—
May 22, 20066A5 BR463$518,289$1,119—
May 16, 20067B1 BR · 1 BA534$594,658$1,114—
May 12, 20066C495$593,640$1,199—
May 11, 20067C1 BR495$628,260$1,269—
May 9, 20064A602$585,494$973—
May 8, 20067D1 BR · 1 BA692$857,367$1,239—
May 5, 20067E1 BR · 1 BA640$767,761$1,200—
May 4, 20062C494$559,019$1,132—
May 4, 20064E1 BR640$738,231$1,153—
May 4, 20064D1 BR642$760,633$1,185—
May 3, 20067A414$505,986$1,222—
May 3, 20064B1 BR656$681,209$1,038—
May 3, 20066D1 BR · 1 BA687$860,421$1,252—
Apr 18, 20063E1 BR640$748,414$1,169—
Apr 12, 20062B1 BR · 1 BA633$635,388$1,004—
Apr 4, 20063B1 BR656$660,844$1,007—
Mar 30, 20063D1 BR · 1 BA694$733,140$1,056—
Mar 29, 20062A804$742,304$923—
Mar 28, 20062D1 BR · 1 BA642$722,958$1,126—
7A5 BR · 1 BA452$575,000$1,272—

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-00029-7503) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans. Storage, parking, and commercial units are excluded from all figures. Floor- and line-level $/sf are time-controlled (each sale measured against the building’s going rate at the time of sale) and expressed at today’s pricing, so they isolate the floor or line premium rather than blend two decades of market movement.

Buying or selling at Block Hall?

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Buying here

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Selling here

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Corey Cohen, Principal · The Roebling Team at Compass
646.939.7375 · c.cohen@compass.com