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4-bedroom townhouse for sale in Windsor Terrace-South Slope

323 Prospect Ave, Windsor Terrace-South Slope, Brooklyn, New York, NY, 11215

$2,350,000
Asking price · in USD
Size
—
Available
Now

About this home

Townhouse for sale in Windsor Terrace-South Slope, Brooklyn: 4 bedrooms, 3 bathrooms. Asking price $2,350,000. Built in 1901.

From the original listing · Realtor.comShow

323 Prospect Avenue Built in 1901 Two-Family Row House Lot: 18.42ft x 80ft Building: 18.42 x 30ft (plus extension on garden level) Set among South Slope's characteristic rowhouses, 323 Prospect Avenue is a lovely two-family house that allows incredible flexibility of use. Currently configured as a lower 2-bedroom, 2-bathroom duplex with basement and a private backyard and an upper 2-bedroom, 1-bathroom duplex, this charming home could easily be converted into a spacious single-family residence. The lower duplex was extensively renovated by the current owners, creating a warm and inviting home that blends thoughtful updates with original character. The kitchen features custom cabinetry and beautiful Italian Pietra Cardoso stone island and countertops. A custom-built bookshelf in the living room cleverly converts into a functional workspace. Original brick walls and fireplaces, together with beautiful cherry floors, add warmth and texture throughout. The rear of the property houses the sun-filled primary bedroom with en-suite bath, overlooking the peaceful backyard which has been lovingly cultivated as an organic garden for many years. Filled with mature plantings and flowers such as a native serviceberry, lilacs, roses and daffodils, and blessed with abundant sunlight and privacy, the garden is a true sanctuary in the city. The upper duplex retains the charm and character of the original house, with exposed brick walls and original tin ceilings. With two bedrooms, a full bathroom, and flexible layout spread across two floors, the apartment offers a wonderful sense of separation and privacy. Together, the two apartments create a flexible home that can accommodate a variety of living arrangements and evolve over time. Ideally located close to Prospect Park, the R train at Prospect Ave and the F/G trains at 7th Ave station, 323 Prospect Avenue offers the best of Brooklyn living within the vibrant neighborhoods of South Slope and Greenwood Heights. This special home is surrounded by the restaurants, cafes, shops, and everyday conveniences that make Park Slope so desirable, such as Giuseppina's, Folk, Buttermilk Bar and many more.

Description from Realtor.com, shown as published there. See the original listing

Roofy listing score

Grade C, 63/100 · Fairly complete

How complete and honest this listing is, from what the source sites show and Roofy’s own checks. It isn’t a rating of the home or the agent. How the score works

  • Photos25/25
    • Full points: 17 photos15/15
    • Full points: Large, clear photos (about 1,000 px)10/10
  • Details13/20
    • Full points: Price stated3/3
    • Full points: Bedrooms stated2/2
    • Full points: Bathrooms stated2/2
    • No points: No size0/2
    • Does not apply: Move-in date: does not apply2/2
    • Does not apply: Lease length: does not apply1/1
    • No points: No pet policy0/1
    • No points: Laundry not mentioned0/1
    • No points: Heat and utilities not mentioned0/1
    • No points: No amenities listed0/2
    • Full points: Description of 344 words3/3
  • True cost7/15
    • Some points: Taxes not stated4/8
    • Some points: Priced 41% below similar homes in its ZIP code3/7
  • Accuracy12/15
    • Nothing to compare: Listed on one site, nothing to compare3/6
    • Full points: Agrees with city records (built 1901, 2 homes)5/5
    • Full points: Confirmed on its source site 3 days ago4/4
  • Legal6/10
    • Full points: No fair-housing problems found in the wording6/6
    • Problem: The agent’s license is not active0/4
  • Trust0/15
    • No points: Not claimed on Roofy by the agent or owner0/10
    • No points: The agent is not verified on Roofy0/5

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Scored Nov 2, 2026 · Score version 1. No one can pay to change a score.

Buying costs

What this price means for you: the monthly payment, and New York’s mansion tax, which the buyer pays on a home of $1 million or more.

Compared with the area

Asks $2,350,000, 41% below the median asking price for homes for sale with 4+ bedrooms in 11215.

Median here
$3,995,000
26 listings, last 90 days
Typical range
$2,499,999–$5,750,000
The middle half of listings

Priced far below similar homes here. Check the price before you trust it.

Asking prices of listings on Roofy and listing sites in the last 90 days, not signed leases or sale prices. One currency, never converted.

More about 11215

Location

Location as the listing shows it.Open in Google Maps

Nearby transit

  • Prospect AvR9 min walk
  • 15 St-Prospect ParkF G11 min walk
  • 7 AvF G11 min walk

Nearby public schools · District 15

Distance only, not school zones. Check the zoned school with NYC Public Schools.

The building

2 units · 2 floors · built 1901

Building record (NYC)

NYC records as of Nov 1 (weekly)

323 Prospect Avenue · BBL 3-01054-0046 · built 1901 · 2 units

Roofy building score 96/100 · Well keptAbout the building, from HPD violations. Not an inspection.
Building type
Two-family home
Open HPD violations
None
Heat complaints
0 this season
Complaints, last 12 months
0
Rent stabilization
None in 2018–2024 tax bills
Last sale (12-month file)
No sales in our 12-month file

No open immediately hazardous (Class C) violations.

See the full building record

Public NYC records about the building, not about the person listing it. Buyers and renters can see them on city websites too. Source: NYC Open Data (DCP PLUTO, HPD, DOF).

Added to Roofy Oct 29, 2026Last checked on Realtor.com Oct 29, 2026Roofy doesn’t verify listings. Never send money before seeing a home.