Back to 34 South 9th Street building profile
34 South 9th StreetRecorded sales & closing prices
34 South 9th Street, Brooklyn, NY 11249
28 recorded closings, 2015–2025. Sortable and searchable below.
- Recorded closings
- 28
- Date range
- 2015–2025
- Median $/sf
- $937
- Price range
- $420K – $1.52M
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.
34 South 9th Street trades as large-format post-2010 new construction south of the Williamsburg Bridge, priced in dollars per square foot. Floor, line and parking drive value within the building; upper floors and residences that convey with a deeded space sit at the top of the range. The seven sibling condominiums on the block are the tightest comparable set available, and their residences carry the same capped 421-a on the roll, so the coming step-down affects the whole comparable set at once. Turnover is thin in a 21-residence building. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
The complete recorded-sale history for 34 South 9th Street, compiled from NYC Department of Finance transfer records, with apartment-by-apartment detail from The Roebling Research Library.
Price per square foot over time
10 sales with a known square footage, by closing date.
Recent closings
The building’s 10 most recent market sales.
| Date | Unit | Apartment | Price | $/sf |
|---|---|---|---|---|
| May 19, 2025 | 4A | 1,682 sf | $1,520,000 | $904 |
| Dec 19, 2024 | 7B | 1,455 sf | $530,000 | $364 |
| May 13, 2021 | 3C | 1,725 sf | $420,000 | $243 |
| Apr 7, 2016 | 7B | 1,455 sf | $557,000 | $383 |
| Feb 2, 2016 | 7B | 1,455 sf | $530,000 | $364 |
| Nov 25, 2015 | 4A | 1,682 sf | $570,220 | $339 |
| Aug 7, 2015 | 3C | 1,725 sf | $570,220 | $331 |
| Jul 17, 2015 | 6B | 1,390 sf | $471,510 | $339 |
| Jul 14, 2015 | 7B | 1,455 sf | $481,650 | $331 |
| Jun 15, 2015 | 1B | 1,066 sf | $549,855 | $516 |
The retrade record
Lines that have changed hands more than once in the public record — the building’s appreciation arc, apartment by apartment.
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.
| Apartment | |||||
|---|---|---|---|---|---|
| May 19, 2025 | 4A | 1,682 | $1,520,000 | $904 | |
| Dec 19, 2024 | 7B | 1,455 | $530,000 | $364 | |
| May 13, 2021 | 3C | 1,725 | $420,000 | $243 | |
| Mar 4, 2021 | 6B | non-market transfer (excluded from $/sf & trends) | 1,390 | $283,048 | — |
| Dec 24, 2020 | 2A | non-market transfer (excluded from $/sf & trends) | — | $475,000 | — |
| Apr 21, 2016 | 3ASponsor Sale | outside the market statistics (eligibility screen) | 1,682 | $570,220 | $339 |
| Apr 7, 2016 | 7B | 1,455 | $557,000 | $383 | |
| Mar 15, 2016 | 2BSponsor Sale | outside the market statistics (eligibility screen) | 1,390 | $610,950 | $440 |
| Feb 2, 2016 | 7B | 1,455 | $530,000 | $364 | |
| Dec 9, 2015 | 5ASponsor Sale | outside the market statistics (eligibility screen) | 1,682 | $560,037 | $333 |
| Nov 25, 2015 | 4ASponsor Sale | 1,682 | $570,220 | $339 | |
| Nov 25, 2015 | 7CSponsor Sale | outside the market statistics (eligibility screen) | 892 | $309,270 | $347 |
| Oct 28, 2015 | 3BSponsor Sale | outside the market statistics (eligibility screen) | 1,390 | $491,790 | $354 |
| Oct 19, 2015 | 5BSponsor Sale | outside the market statistics (eligibility screen) | 1,390 | $471,510 | $339 |
| Oct 15, 2015 | 4BSponsor Sale | outside the market statistics (eligibility screen) | 1,390 | $471,510 | $339 |
| Oct 15, 2015 | 5CSponsor Sale | outside the market statistics (eligibility screen) | 1,725 | $570,220 | $331 |
| Oct 8, 2015 | 6ASponsor Sale | outside the market statistics (eligibility screen) | 1,682 | $570,220 | $339 |
| Sep 2, 2015 | 1CSponsor Sale | outside the market statistics (eligibility screen) | 1,443 | $477,695 | $331 |
| Aug 11, 2015 | 2CSponsor Sale | outside the market statistics (eligibility screen) | 1,725 | $570,220 | $331 |
| Aug 7, 2015 | 3CSponsor Sale | 1,725 | $570,220 | $331 | |
| Aug 6, 2015 | 4CSponsor Sale | outside the market statistics (eligibility screen) | 1,725 | $610,950 | $354 |
| Aug 3, 2015 | 7ASponsor Sale | outside the market statistics (eligibility screen) | 1,486 | $534,581 | $360 |
| Aug 3, 2015 | 2ASponsor Sale | outside the market statistics (eligibility screen) | 1,682 | $570,220 | $339 |
| Jul 17, 2015 | 6BSponsor Sale | 1,390 | $471,510 | $339 | |
| Jul 14, 2015 | 7BSponsor Sale | 1,455 | $481,650 | $331 | |
| Jul 10, 2015 | 1ASponsor Sale | outside the market statistics (eligibility screen) | 1,964 | $570,220 | $290 |
| Jun 30, 2015 | 6CSponsor Sale | outside the market statistics (eligibility screen) | 1,725 | $618,586 | $359 |
| Jun 15, 2015 | 1BSponsor Sale | 1,066 | $549,855 | $516 |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-02135-7503; each condominium apartment is its own tax lot). 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.
Put this data to work.
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.
Price to the building’s real trajectory, not a guess — we’ll position your line against its true comps to maximize the outcome.
646.939.7375 · c.cohen@compass.com