51 South Portland Ave
Brooklyn · 11217 · BBL 3021000008
51 South Portland Ave is a multi-family walk-up in Boerum Hill, Brooklyn, ZIP 11217. City records date it to 1866 and count 3 residential units. The city's property file lists the owner of record as Kliegman, Matthew Adam. Its most recent total assessed value is $320K.
The ownership chain
The most recent recorded deed is dated May 8, 2025, transferring the lot to Kliegman Matthew Adam for a stated $5.2M. PulseCities holds 1 recorded deed for this lot. Deeds recorded through July 31, 2026, the most recent day the city has published.
A deed names a party of record. Stated consideration of $0 usually marks a transfer between related parties rather than a sale.
Ownership transfers
| Party taking title | Recorded | Amount |
|---|---|---|
| Kliegman Matthew AdamDEED from Thomas Donna | May 8, 2025 | $5.2M |
Deeds and assignments recorded in ACRIS, one row per document. Amount is the stated consideration; $0 often marks a non-arms-length transfer. An assignment moves a lender's paper and is not a sale. Source: NYC ACRIS, current through July 31, 2026.
What the eviction record shows
No executed eviction is on record at 51 South Portland Ave in the citywide marshal file, which runs from April 2024.
Rent stabilization at this address
No DHCR rent-stabilization registration is on file for 51 South Portland Ave in the years PulseCities holds. Absence is not proof: an owner who stops registering leaves the same gap as a building that never had stabilized units. Checking your own apartment starts with the free rent history. How to check rent-stabilized status →
Building permits
| Work | Filed | Type |
|---|---|---|
| GCNEW DECK AND STAIRS AT REAR YARD. NEW DOOR AT FORMER WINDOW OPENING. RE-OPEN FOR | Jul 6, 2026 | AL |
| SPRMODIFY THE EXISTING SPRINKLER PIPES AND ADD ADDITIONAL SPRINKLER HEADS. CHANGE I | Mar 2, 2026 | AL |
| PLMPlumbing work filed in conjunction with the Alt-CO app B01326508-I1. | Feb 12, 2026 | AL |
| GCCHANGE IN USE FROM A THREE FAMILY RESIDENCE TO A SINGLE FAMILY RESIDENCE. NO CHA | Feb 6, 2026 | AL |
DOB job filings on this lot, past 12 months. Source: NYC DOB job filings, current through August 26, 2026.
311 housing complaints
31 complaints in the past 12 months
NYC 311 housing and building complaints logged for this address. Source: NYC 311, current through August 26, 2026.
How 51 South Portland Ave compares in 11217
PulseCities tracks 3,987 lots in 11217, of which 54 carry an executed eviction from the marshal record, which starts in April 2024, and 242 carry a deed from the shorter ACRIS window. 11217 scores 32.4 out of 100 for displacement pressure, 85 of 177 scored NYC ZIP codes. The full signal breakdown for Boerum Hill →
Watch 51 South Portland Ave
Get an email when a deed, eviction, permit or violation is filed on this building. Only when something lands, and never more than once a day
Questions about 51 South Portland Ave
Who owns 51 South Portland Ave?
The most recent deed on file for 51 South Portland Ave names Kliegman Matthew Adam. Deeds record the party that took title, which is often a holding company rather than the operator managing the building. That deed was recorded May 8, 2025.
How much did 51 South Portland Ave sell for?
The most recent deed states a consideration of $5.2M, recorded May 8, 2025 in ACRIS. Stated consideration is what the parties filed, and it can differ from the economics of the deal.
Have there been evictions at 51 South Portland Ave?
No executed eviction at 51 South Portland Ave appears in the NYC evictions dataset, which PulseCities holds from April 2024 forward. Executed evictions are the end of the process, so a building with none may still have active housing court cases.
Is 51 South Portland Ave rent stabilized?
No DHCR registration for 51 South Portland Ave appears in the years PulseCities holds. That is a gap in the registration record rather than an answer about any apartment, and the free rent history from NYS Homes and Community Renewal is what settles it.
What is the displacement risk around 51 South Portland Ave?
11217 (Boerum Hill) scores 32.4 out of 100 on the PulseCities displacement index. The score reads five ZIP-level signals: eviction rate, LLC acquisition rate, permit intensity, assessment spikes, and 311 complaint volume. It describes the area around the building, not the building itself.
Sourced from NYC public records: ACRIS deeds, DOB permits, the NYC evictions dataset, and 311. Records reflect what agencies have published and can lag events.