Alteration filingSep 16
DOB filing B01140071-S1
Alteration filing at 306 23 Street
Recorded as completed2 proposed stories
Open filing Building record · BIN 3017719
306 23 Street
306 23 Street, Brooklyn, NY 11215
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 0 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 3017719
306 23 Street
Sunset Park (West), Brooklyn
A consolidated public-record view · updated Sep 16, 2026
- DOB filings
- 2
- Active-status
- 0
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records0
First included filingOct 24, 2021
Latest recorded changeSep 16, 2026
The lot
What is already here?
The lot holds a 2-story one-family home built in 1901, on a 1,669 sq ft lot.
- Floor 2Nothing on record
- Floor 1Street levelStreet level. The lot is recorded as one and two family homes.
- Street levelOne and two family homes
- Above the southern skylineFrom about floor 5 — the tallest thing within 60 m to the south is 13.4 m
- Built
- 1901
- Floors
- 2
- Residential units
- 1
- Building type
- One-family home
- Land use
- One and two family homes
- Zoning district
- R6B
- Lot area
- 1,669 sq ft
- Building area
- 985 sq ft
The apartments
148 condominium apartments are assessed on this block, and the typical one is 952 sq ft (88 m²). They run from 52 to 178 m².
The city values the typical one at $259,905. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
5 apartments on this tax block changed hands in the year the city last published, at a median of $2,150,000, from 1,990,000 to 2,200,000.
Recorded sale prices from the Department of Finance’s rolling file, covering the year to Aug 31, 2026. Transfers under $10,000 are left out: New York records deed transfers between relatives at a dollar, and those are not sales. No apartment number and no name is carried from either side.
Owner of record
BASAD PARTNERS ON 6TH LLC
As the assessment roll records it. Only owners that read as a company are shown here; where the roll names an individual, nothing is published.
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 19, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
Violation record
Are there open violations here?
No open violations are recorded for this building.
Open means the agency has not recorded a resolution, which is not the same as the problem still existing. What a violation is, and what it is not. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Sep 18, 2026.
What is recorded here
Multiple filings, one stable building identifier.
New York City's Building Identification Number helps connect filings that may use different application numbers or describe different scopes of work. The records below are grouped because they publish BIN 3017719. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 2 alteration filing. Its latest status categories are 1 recorded as completed, 1 closed or withdrawn. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Oct 24, 2021
- Latest recorded change
- Sep 16, 2026
- Highest proposed story count
- 2 stories
- Highest proposed unit count
- 1 dwelling units
Highest recorded values may come from different filings and must not be combined into one proposed project. Open the individual filings below for their exact scope. Values outside the publication's conservative data-quality bounds are withheld pending source review.
Address alerts
Watch this address.
Get an email when NewYorkDaily detects a material change in the public DOB records associated with 306 23 Street.
Confirmation is required. Alerts describe source-data changes, not confirmed construction activity. Unsubscribe at any time. Privacy
Recorded history
What has happened at this address?
Every dated event the city has published for this building, from all 2 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Horizontal building enlargement with partial exterior and interior removals and alterations. No change in use, egress, or occupancy. Filing B00592232-I1.
- Alteration approved02
Filing B00592232-I1 reached an approved status.
- Alteration now closed03
The latest status recorded for B00592232-I1 is “Filing Withdrawn.”
- Alteration filed04
Construction fence in front yard for 1-family alteration. Filing B01140071-S1.
- Alteration approved05
Filing B01140071-S1 reached an approved status.
- Permit recorded for alteration06
DOB lists a first permit date for B01140071-S1. That is not by itself confirmation of activity on site.
- Alteration signed off07
DOB recorded a sign-off for B01140071-S1.
- Alteration now completed08
The latest status recorded for B01140071-S1 is “LOC Issued.”