RealtyLens
for saleRealtyLens property overview
$2,150,000

443 12th St Apt 1B

Brooklyn, NY, 11215
View more Brooklyn, NY property pages
3Beds
2Baths
1,915Sqft
$1123$/sqft

Listing Notes

Loft 1B The Ansonia Clock Factory 443 12th Street Set within the historic Ansonia Clock Factory, a distinguished early 20th-century Park Slope warehouse thoughtfully converted into cooperative residences, Loft 1B is a striking street-level duplex, meticulously redesigned in 2014 by architect Philippe Baumann. The renovation masterfully balances the building's industrial heritage with the clean, contemporary clarity for which Baumann Architecture is known. Spanning approximately 1, 915 square feet across two expansive levels, the residence is defined by its remarkable volume and structural character. A flood of natural light, soaring near triple-height ceilings, exposed brick, and original beam construction create a dramatic interplay between open living areas andA thoughtfully articulated private spaces. Baumann's redesign emphasizes material continuity throughout, with hardwood flooring, steel and wood detailing, and extensive custom storage enhancing both functionality and aesthetic cohesion. Two distinct mezzanine levels further elevate the sense of verticality while offering flexibility for a variety of uses, whether as sleeping quarters, creative studios, or workspaces. The upper level showcases preserved original structural elements, framing a generous eat-in kitchen and dining area unified within one expansive space, stylishly renovated with granite countertops and custom cabinetry, and anchored by soaring columns that lend a striking architectural presence. In a chorus of elevated floating interventions, two mezzanine chambers and a full bathroom overlook the main living space. A distinctive system of accordion panels allows for adaptable privacy, elegantly modulating light and sound. Integrated LED lighting throughout enhances both ambiance and functionality. A sculptural steel staircase serves as both centerpiece and connector, linking the upper volumes to a light-filled lower level designed for everyday living. This level offers generous space for lounging, working, and quiet retreat, all beneath impressive ceiling heights (24 feet height) and an abundance of natural light. The primary suite completes the lower level, with integrated large closets, and featuring a glass-tiled en-suite shower room and a full-sized laundry room, set against modern concrete floors that echo the loft's industrial roots. Accessible via elevator, the building's well-maintained communal rooftop offers sweeping views of Manhattan, including a direct sightline to the Statue of Liberty. It is an ideal setting for al fresco dining, sunset gatherings, and Fourth of July fireworks. Located just minutes from Prospect Park, 443 12th Street retains the authentic character of its industrial past, with oversized windows, substantial proportions, and a true loft sensibility. Residents enjoy a professionally managed, pet-friendly cooperative with elevator access and a beautifully maintained shared rooftop, an exceptional extension of the home.

Market Insights

Below nearby median-33%

$1123/sqft vs a nearby median of $1663/sqft.

Nearby median$1663/sqft
Nearby properties12
Property size1,915 sqft
  • -33% versus the nearby median price per square foot.
  • Price history is limited, so current comps matter more than trend alone.
  • 1,915 sqft creates a usable price-per-square-foot read.

Pricing Read

Yardstick fair value$3.19M$2.90M$3.47M · 50% confidence
vs ask $2.15M−$1.03M (−48.1%)

Asking price is about 48.1% below the fair value — likely to draw competing offers if it's still on market.

$1,663/sqft median across 9 tight comps × 1,915 sqft= $3.19M
  • Transit access+$80k +2.5%
  • Mid-century building era−$48k −1.5%
  • Visible condition issues−$32k −1.0%
Cumulative NYC adjustments+$0+0.0%

Property Read

FreshnessVerification recommended

The page is useful for research, but the status and price should be verified before acting.

Market Position-33% vs nearby

The asking price per square foot is below the nearby median, which can be worth a closer comp check.

Price MovementInitial price point

Price history is still limited; review again as more market activity becomes available.

Diligence Read4 items to check
AI ReadinessReady to analyze
Assistant read

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Generated from the facts shown on this page and nearby market data. Not a professional appraisal.

Listing Details

Days on market
19 days
Last price change
No change recorded
Listed
Apr 22, 2026
Photos
21 photos
Property type
coop
Status
for sale

Features & Amenities

Hardwood FloorsTwo Or More StoriesExposed BrickElevatorEnsuiteViewsOpen Concept LivingOfficeDen

Photos

Building Facts

Year built
1960
Stories
5
Total units
36
Residential units
36
Building area
42,500 sqft
Lot size
8,500 sqft
Land use
Multi-family elevator buildings
Building class
D4

From NYC public records where available.

Price History

May 4, 2026Initial record
$2,150,000for sale

Public Records

DOB violations4 open

18 total recorded against the building

HPD violations0 open

8 total recorded

ACRIS documents98

Tax-lot deed, mortgage, and transfer records on file

311 calls (12 mo)29,819

Top: illegal parking

Top complaint types in ZIP 11215

  • Illegal Parking6,063
  • HEAT/HOT WATER2,144
  • Street Condition1,124
  • Noise - Residential944
  • Snow or Ice941

Recent DOB

  • Sep 23, 2024V-DOB VIOLATION - ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED
  • Apr 6, 2018V-DOB VIOLATION - ACTIVE · LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED
  • Jan 3, 2017V*-DOB VIOLATION - DISMISSED · ACC1-(OTHER BLDGS TYPES) - ELEVATOR AFFIRMATION OF CORRECTION ELEVATORREQUIRED
  • Nov 2, 2016V*-DOB VIOLATION - Resolved · E-ELEVATOR ELEVATORREQUIRED

Recent HPD

  • Oct 1, 2025Class A · § 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES A...
  • Oct 1, 2025Class C · § 27-2005, 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING HOOK AND EYE AT VESTIBULE DOOR AT PUBLIC HALL, 1st STORY
  • Feb 18, 2022Class A · (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD S WEBSITE, WWW.NYC.GOV\HPD, SEARCH BE...
  • Apr 5, 2021Class I · §27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITE...

Sourced from NYC Open Data (DOB, HPD, ACRIS). Updated as the city republishes — check the original source for live status.

You can also find this listing on StreetEasy.

Listing data sourced from streeteasy.com. RealtyLens enriches and contextualises it for you, but the original listing lives on the source.

443 12th St Apt 1B, Brooklyn, NY, 11215 | RealtyLens