910 Union Street (Park Union)Recorded sales & closing prices
910 Union Street, Brooklyn, NY 11215
30 recorded closings, 2008–2026. Sortable and searchable below.
- Recorded closings
- 30
- Date range
- 2008–2026
- Price range
- $784K – $5M
910 Union trades at the upper end of Park Slope's small-condominium market, priced per square foot against park-block and Grand Army Plaza product: the large conversion at 1 Prospect Park West, the plaza's postwar co-ops, and the newer condominiums on the Prospect Heights side. Resales have been steady since the 2013 sellout, a handful a year at most. The A- and B-line units on the upper floors set the building's price level. The second-floor units and 1B trade at the smaller end of the market. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
The complete recorded-sale history for Park Union, per listing records, compiled from NYC Department of Finance transfer records and verified listing data, then enriched apartment-by-apartment by The Roebling Team research desk.
Recent closings
The building’s 10 most recent market sales.
| Date | Unit | Apartment | Price |
|---|---|---|---|
| Jun 15, 2026 | 4B | $2,815,000 | |
| May 19, 2026 | 5B | $2,825,000 | |
| Dec 22, 2025 | 1B | $930,000 | |
| Aug 26, 2025 | 3B | $2,575,000 | |
| Nov 27, 2023 | 1B | $865,000 | |
| May 31, 2023 | 4A | $2,510,000 | |
| Jun 2, 2022 | 7A | $2,400,000 | |
| Nov 29, 2021 | 1A | $2,612,500 | |
| Sep 20, 2021 | 7B | $2,300,000 | |
| Feb 26, 2020 | 5B | $2,100,000 |
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 | |||
|---|---|---|---|
| Jun 15, 2026 | 4B | $2,815,000 | |
| May 19, 2026 | 5B | $2,825,000 | |
| Dec 22, 2025 | 1B | $930,000 | |
| Aug 26, 2025 | 3B | $2,575,000 | |
| Nov 27, 2023 | 1B | $865,000 | |
| May 31, 2023 | 4A | $2,510,000 | |
| Jun 2, 2022 | 7A | $2,400,000 | |
| Nov 29, 2021 | 1A | $2,612,500 | |
| Sep 20, 2021 | 7B | $2,300,000 | |
| Feb 26, 2020 | 5B | $2,100,000 | |
| Dec 31, 2019 | 2A | $1,425,000 | |
| Aug 1, 2019 | 5A | $2,250,000 | |
| May 10, 2018 | 3B | $2,325,000 | |
| Aug 9, 2017 | 4A | $2,200,000 | |
| Sep 11, 2013 | 7B | $2,150,000 | |
| Aug 21, 2013 | 2B | $1,500,000 | |
| Jul 16, 2013 | 1B | $783,897.75 | |
| Jul 29, 2013 | 3A | $1,625,000 | |
| Jul 1, 2013 | 2A | $1,173,887.5 | |
| Jul 2, 2013 | 2C | $865,000 | |
| Jun 24, 2013 | 5B | $1,810,293.75 | |
| Jun 19, 2013 | 6A | $1,733,925 | |
| Jun 18, 2013 | 7A | $2,140,475 | |
| Aug 1, 2013 | 6B | $1,861,206.25 | |
| Jun 5, 2013 | 4A | $1,700,000 | |
| Jul 15, 2013 | 5A | $1,782,087.5 | |
| Jun 10, 2013 | 4B | $1,782,087.5 | |
| Jun 24, 2013 | 1A | $2,339,783.75 | |
| May 24, 2013 | 3B | $1,675,000 | |
| Apr 22, 2008 | — | $5,000,000 |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01066-7503) 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. 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.