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Buildings·Thornton Park·Sold prices

Thornton ParkRecorded sales & closing prices

18 Thornton Street, near Flushing Avenue · Williamsburg

23 recorded closings, 2008–2025. Sortable and searchable below.

Recorded closings
23
Date range
2008–2025
Median $/sf
$661
2025 · adjusted
Listing discount
1.7%
median, from last ask
Monthly carry/sf
$0.76
≈ $749/mo · recent
Price range
$284K – $940K
Price shift · median $/sf · floor-adjusted
Since 2008
▲ +55.4%
10-Year
▲ +45.8%
Since 2022
▼ -11.2%
1-Year
▲ +3.8%

Change in the building’s median $/sf over each window, on a floor-adjusted basis — standardized to the building’s average floor, so it reflects price rather than which floors happened to sell. This is a different method from The Roebling Index, which publishes plain medians and applies no floor adjustment; the two are not interchangeable. Floor adjustment standardizes for floor only. It does not control for condition, size, exposure, renovation or the mix of what happened to trade. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.

The complete recorded-sale history for Thornton Park, compiled from NYC Department of Finance transfer records, with apartment-by-apartment detail from The Roebling Research Library. Across sales with a public asking price, the building carries a median listing discount of 1.7% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.

Price per square foot over time

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

$319$684$1,049'08'11'14'17'20'23'255B · $545/sf · 20087B · $488/sf · 20086B · $565/sf · 20083B · $551/sf · 20083C · $384/sf · 20084C · $358/sf · 20087A · $410/sf · 20086C · $369/sf · 20083A · $640/sf · 20156B · $854/sf · 20154C · $747/sf · 20206A · $773/sf · 20225B · $1,010/sf · 20223A · $816/sf · 20226C · $778/sf · 20237A · $951/sf · 20246C · $798/sf · 2025
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 floor-standardized (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$661/sfevery bar sits above or below this · 0%

Premium by line

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

Line A 3 sales
+4%
Line C 3 sales
-3%

Recent closings

The building’s 10 most recent market sales.

DateUnitApartmentPrice$/sfvs. Ask
Jan 31, 20256C2 BR · 2 BA · 990 sf$790,000$798-12.1%
Jul 26, 20247A2 BR · 2 BA · 988 sf$940,000$951-1.1%
Aug 21, 20236C2 BR · 2 BA · 990 sf$770,000$778—
Jul 27, 20223A2 BR · 2 BA · 950 sf$775,000$816-2.5%
Jun 2, 20225B1 BR · 1 BA · 515 sf$520,000$1,010+4.0%
Feb 8, 20226A2 BR · 2 BA · 970 sf$750,000$773+0.0%
May 6, 20207B2 BR · 2 BA$900,000-7.7%
Apr 24, 20204C2 BR · 2 BA · 950 sf$710,000$747-3.9%
Mar 7, 20185B1 BR · 1 BA$490,000-1.8%
Jul 15, 20156B1 BR · 515 sf$440,000$854-2.2%

The retrade record

Lines that have changed hands more than once in the public record — the building’s appreciation arc, apartment by apartment.

7A · 988 sf+132%
$404,586 ($410/sf) 2008 → $940,000 ($951/sf) 2024
6C · 990 sf+116%
$365,040 ($369/sf) 2008 → $770,000 ($778/sf) 2023 → $790,000 ($798/sf) 2025
4C · 950 sf+109%
$339,690 ($358/sf) 2008 → $710,000 ($747/sf) 2020
5B · 515 sf+83%
$284,605 ($545/sf) 2008 → $520,000 ($1,010/sf) 2022
6B · 515 sf+49%
$295,074 ($565/sf) 2008 → $440,000 ($854/sf) 2015
3A · 950 sf+28%
$605,000 ($640/sf) 2015 → $775,000 ($816/sf) 2022

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.

23 recorded sales
Apartment
Jan 31, 20256C2 BR · 2 BA990$790,000$798-12.1%
Jul 26, 20247A2 BR · 2 BA988$940,000$951-1.1%
Aug 21, 20236C2 BR · 2 BA990$770,000$778—
Jul 27, 20223A2 BR · 2 BA950$775,000$816-2.5%
Jun 2, 20225B1 BR · 1 BA515$520,000$1,010+4.0%
Feb 8, 20226A2 BR · 2 BA970$750,000$773+0.0%
May 6, 20207B2 BR · 2 BA—$900,000—-7.7%
Apr 24, 20204C2 BR · 2 BA950$710,000$747-3.9%
Mar 7, 20185B1 BR · 1 BA—$490,000—-1.8%
Jul 15, 20156B1 BR515$440,000$854-2.2%
Jan 21, 20153A2 BR · 2 BA946$605,000$640+1.0%
Aug 21, 20137B2 BR—$536,000—-1.7%
Apr 26, 20133C2 BR—$485,000—-9.3%
Apr 26, 20136A2 BR—$450,216—+0.3%
Oct 10, 20087ASponsor Sale2 BR988$404,586$410+1.4%
Oct 10, 20086CSponsor Sale2 BR990$365,040$369+1.7%
Sep 26, 20084CSponsor Sale2 BR948$339,690$358-2.7%
Sep 15, 20083CSponsor Sale2 BR950$365,040$384+0.0%
May 30, 20083BSponsor Sale515$283,920$551—
May 23, 20086BSponsor Sale522$295,074$565—
Feb 13, 20087BSponsor Sale1,008$492,000$488—
Feb 11, 20084BSponsor Sale148$298,000$2,014—
Jan 24, 20085BSponsor Sale522$284,605$545—
Sources, exclusions and how these figures are computed

Sales sourced from NYC Department of Finance recorded transfers (BBL 3-02276-7501). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. 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 Thornton Park?

Put this data to work.

Buying here

Know what’s fair before you offer — we’ll show you where each line trades, the building’s discount-to-ask pattern, and where the value sits right now.

Selling here

Price to the building’s real trajectory, not a guess — we’ll position your line against its true comps to maximize the outcome.

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