Skip to Content
  • Apartments
  • Overview & Photos
  • Maps
  • Ratings & Insider Info
  • Building Specialists
  • Floorplans
  • Sales Data & Comps
  • Similar Buildings
139 Sixth Avenue
139 Sixth Avenue
Last updated on Aug 13, 2026

139 Sixth Avenue

Co-op located in Park Slope, between Sterling Place & Saint Johns Place
139 Sixth Avenue Location Map

Overview of 139 Sixth Avenue

139 Sixth Avenue is a three story, four unit co-op in Park Slope’s Historic District, a pre-war 20 foot wide brownstone in the North Slope. The building sits among a row of ten Italianate brownstones constructed between 1869 and 1871, and its apartments retain original details such as marble mantels, wood shutters, moldings, millwork, and high ceilings.

Private outdoor space is a recurring part of the building’s layouts, including roof rights and garden access. Apartments also have in-unit laundry, basement storage, generous proportions, and rear bedrooms oriented toward gardens or other quiet exposures. The four unit co-op is self managed and pet friendly.

Interior layouts preserve the floor through character of a traditional brownstone, with living and dining spaces arranged across the broad front of the building and bedrooms toward the rear. Wood burning fireplaces, built-ins, pantry storage, renovated kitchens and baths, and east or west exposures appear across the homes, while the private roof deck adds views of neighborhood rooftops, church steeples, and open sky.

Prospect Park and Grand Army Plaza are a few blocks away, with the Brooklyn Museum, Brooklyn Botanic Garden, Brooklyn Public Library, BAM, and Barclays Center also close by. The Grand Army Plaza station serves the 2 and 3 trains, while the 7th Avenue station serves the B and Q; Fifth Avenue’s restaurants, the Park Slope Food Coop, and neighborhood shopping are nearby.

Doorman
None
Type
Co-op
Year Built
1920
Apartments
Floors
3
Neighborhood
Min Down
20%

Amenities

  • Pre War
139 Sixth Avenue building photo 1
{ "key" : "AIzaSyDquABdSLhathmwfnoTcYwA1BY6coZZyZk", "lat": 40.67777, "lng": -73.97607, "marker": { "icon": "https://img3.cityrealty.com/neo/i/w/amenities/base.png" } }

  1. B
  2. Q
at Flatbush Ave and Park Pl 0.20 miles
  1. 2
  2. 3
at Flatbush Ave 0.22 miles
  1. R
at 4th Ave 0.37 miles
  1. D
at 4th Ave and Pacific 0.43 miles
  1. N
  2. 4
  3. 5
at 4th Ave 0.43 miles

Sales History

Price/Room (Est)

Why are we displaying the estimated price per room?

For some co-ops, instead of price per square foot, we use an estimate of the number of rooms for each sold apartment to chart price changes over time. This is because many co-op listings do not include square footage information, and this makes it challenging to calculate accurate square-foot averages.

By displaying the price per estimated room count, we are able to provide a more reliable and consistent metric for comparing sales in the building. While we hope that this gives you a clearer sense of price trends in the building, all data should be independently verified. All data provided are only estimates and should not be used to make any purchase or sale decision.

Price/Ft2 (Est)
View Full Closing History

Sales Summary

Show:
Thinking of selling? See how your apartment compares and who can sell it best. Start here

Sales History by Apartment Size

View Full Closing History
Show:

Pricing Comparison of Similar Buildings

View Detailed Comparison

Alternate Addresses

  • 139 6 Avenue
  • 139 Avenue of the Americas