Milton Coste

12 Park Slope Fixer-Upper Properties

Renovation-ready properties with upside potential in Park Slope, Brooklyn

All NYC Park Slope
12 results
559 4th Avenue For Sale
Erica Nieves at Corcoran Group
$2,995,000

13 bd · 7 ba · 1,800 sqft · Multi Family

559 4th Avenue, New York City

MLS: RLS20091449 RLS at REBNY
90 8TH Avenue #1A For Sale
Danielle Nazinitsky at Decode Real Estate
$850,000

2 bd · 1 ba · Co-op

90 8TH Avenue #1A, New York City

MLS: RLS20059689 RLS at REBNY
676 Union Street For Sale
Catherine E Witherwax at Corcoran Group
$6,850,000

6 bd · 5 ba · 6,500 sqft · Multi Family

676 Union Street, New York City

MLS: RLS20048521 RLS at REBNY
371 16th Street For Sale
Peter Mancini at Keller Williams Realty Empire
$2,399,999

4 bd · 3 ba · 1,704 sqft · Multi Family

371 16th Street, New York City

MLS: RLS20066881 RLS at REBNY
707 Carroll Street #4R For Sale
Evangelia Boudourakis at Daniel Gale of Brooklyn LLC
$1,100,000

2 bd · 1 ba · 798 sqft · Condo

707 Carroll Street #4R, New York City

MLS: RLS20105200 RLS at REBNY
298 12th Street #4F For Sale
Iman Zahrieh at Daniel Gale of Brooklyn LLC
$945,000

2 bd · 1 ba · 800 sqft · Condo

298 12th Street #4F, New York City

MLS: RLS20091224 RLS at REBNY
841 Union Street #508 For Sale
Alyssa S Morris at Compass
$250,000

Studio · 0 ba · Condo

841 Union Street #508, New York City

MLS: RLS20087028 RLS at REBNY
879 UNION Street For Sale
Terry S Robison at Douglas Elliman Real Estate
$4,250,000

7 bd · 6 ba · Multi Family

879 UNION Street, New York City

MLS: RLS20095182 RLS at REBNY
385 6TH Avenue For Sale
Francois Guerrier at Corcoran Group
$3,799,999

4 bd · 3 ba · Multi Family

385 6TH Avenue, New York City

MLS: RLS20093907 RLS at REBNY
676 Union Street #TH For Sale
Donald P. Brennan, Jr. at ENGEL & VOLKERS NEW YORK CITY
$6,850,000

6 bd · 5 ba · 6,500 sqft · Multi Family

676 Union Street #TH, New York City

MLS: RLS20069098 RLS at REBNY
323 2nd Street #b1 For Sale
Jason Katz at Modlin Group LLC
$525,000

1 bd · 1 ba · 500 sqft · Condo

323 2nd Street #b1, New York City

MLS: RLS20098666 RLS at REBNY
819 UNION Street #PH For Sale
Jean Paul Ho at Brooklyn Real Property Inc
$3,500,000

6 bd · 4 ba · Rental

819 UNION Street #PH, New York City

MLS: RLS20056602 RLS at REBNY

This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved.

Listings are updated approximately every 15 minutes. Data displayed by Keller Williams NYC.

RLS at REBNY

Fixer-Upper Properties for Sale in NYC

Fixer-upper properties attract buyers looking to purchase below current market pricing and add value through targeted renovation. This category spans everything from pre-war co-ops with dated kitchens to multi-family townhouses with deferred maintenance. After 25+ years advising buyers across NYC, the margin between a smart purchase and an expensive mistake comes down to accurate cost estimation before you close. Explore current inventory in our property search, read about common buyer mistakes, and review our NYC buyer's guide.

What renovation permits are required?

Most significant work requires DOB filing. Type 1 alteration permits cover use/egress changes. Type 2 covers general interior alterations including gut renovations. Co-op boards add another layer with alteration agreements and contractor insurance requirements.

How do I finance a fixer-upper in NYC?

Standard co-op/condo mortgages don't include renovation costs. Buyers typically finance renovations through a HELOC after closing, a renovation loan, or cash reserves. Before making an offer, establish your renovation budget, add a 15-20% contingency, and confirm you have sufficient liquidity.

What should I inspect before buying?

Beyond standard inspection, check DOB open permits and violations at nyc.gov/buildings, test for asbestos and lead paint in pre-1978 buildings, verify electrical panel age and amperage, and assess cast iron or galvanized plumbing condition. Open DOB violations can delay closing.

Buying Tip from Milton Coste

Calculate the After-Repair Value (ARV) first: what comparable renovated units have actually sold for in the last six months. Subtract your renovation cost plus a 20% buffer, then subtract your equity cushion. If the purchase price doesn't allow that math to work, walk away. I've seen buyers overpay because they anchored to the asking price instead of the ARV.

Milton Coste, Licensed Real Estate Associate Broker

Milton Coste

Licensed Real Estate Associate Broker

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Milton Coste, Licensed Real Estate Associate Broker, KWNYC