323 5th Avenue - 21.5ft Wide Prime Park Slope Mixed-Use with Retail & Duplex Residence Currently Zoned to PS 321 An exceptional opportunity in the heart of Park Slope, 323 5th Avenue offers a mixed-use building that combines stable commercial tenancy with a spacious duplex residence, encompassing approximately 2,851 square feet including the basement. Ground Floor & Lower Level A preschool currently occupies t he street-level retail storefront provid ing excellent frontage and visibility along bustling Fifth Avenue, benefitting from consistent neighborhood activity. A finished slab basement adds flexible space for storage or back-of-house operations. Tenant is in place through 20 31. Residential Duplex with Terrace currently zoned to PS 321 A newly renovated duplex apartment blends modern comfort with thoughtful design. Hardwood floors run throughout, complemented by double-pane insulated windows. The main level features expansive living and dining areas along with a modern, generously sized kitchen outfitted with updated appliances and ample counter space. The kitchen flows directly to a private terrace of approximately 400 square feet-an ideal setting for grilling, gardening, or outdoor entertaining. A convenient half bath completes this level. Upstairs, the primary suite includes a generous walk-in closet and a modern, upgraded en-suite bathroom. Two additional bedrooms share a second full bathroom, also updated with contemporary finishes. Building Upgrades The property was recently improved with new mechanicals, including two boilers and HVAC systems, providing efficiency and peace of mind for both residential and commercial use. Income / Expense set up available upon request Perfectly positioned near Prospect Park and surrounded by Park Slope's acclaimed restaurants, cafés, and shops, 323 5th Avenue combines commercial stability with desirable residential living in one of Brooklyn's most sought-after neighborhoods. The building also carries approximately 935 square feet of unused FAR; buyers are encouraged to consult with an architect or other professional regarding potential options.
Listed by Anthony Robles
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Douglas Elliman Real Estate
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(917) 617-9602
Listed by Aran P Scott
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Douglas Elliman Real Estate
Last updated October 23, 2025
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Source: REBNY #RLS20047909
Listing Facts
TypeSingle-family
NeighborhoodCentral Slope
Bedrooms3
Bathrooms3.5
Days on Prevu42
Taxes$9,972/year
Size2,851 sqft
Price per sqft$1,368
Amenities
Private Outdoor Space
Location
Mortgage Calculator
Listing History
09/11/2025
Listed by Douglas Elliman Real Estate
$3,900,000
Estimated Closing Costs
Total
$145,610
Attorney Fees
$4,000
NYC Mansion Tax
$58,500
Title Insurance
$17,550
Bank Attorney
$1,500
Mortgage Recording Tax
$60,060
Other Closing Costs
$4,000
Estimated closing costs are based on the list price of $3,900,000 and a 20% downpayment. These estimates are for indicative purposes only. Actual closing costs may vary for each transaction. See the Closing Costs Calculator for calculations specific to your situation.
Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.