Add Listing
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    AI Search
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings

    680 E 42nd Street Brooklyn, NY 11203

    View on Map
    Claim this Listing
    Loading data...
    Loading data...
    Loading data...
    For Sale
    $899,000

    MULTI_FAMILY - Brooklyn, NY

    Type:Duplex
    Lot size:
    0.04 Acres
    Added:
    Mar 23, 2026
    Days on Market:
    24
    Last Refresh:
    Apr 15 at 8:06 pm

    Property Features for 680 E 42nd Street

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Duplex
    Zoning
    R4
    Bathrooms
    3
    Rooms
    Bathroom 1, Bathroom 3, Bathroom 2
    Parking features
    Garage - Detached
    Patio and Porch features
    Porch
    Interior features
    Garage Door Opener(s), Laundry Area, Porch, Refrigerator, Stove, Window Treatments
    Standard status
    Active
    Lot size
    0.04 Acres

    Taxes and HOA fees

    Tax Annual Amount
    2218

    Building Details

    Number of units
    2
    Flooring type
    Parquet Wood, Tile
    Building materials
    Brick
    Roof type
    Flat

    We can help!

    Listing Contact
    Bozena Zgoda

    Listing agent Bozena Zgoda

    Listing office BO's Prime Realty 9524 Avenue L, Brooklyn, NY

    Listing date Mar 23, 2026

    MLS# 499901 Listing URL

    Copyright © 2026 Brooklyn New York Multiple Listing Service. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    East Flatbush Brick Duplex

    This is a large, 2-family brick duplex located in the heart of East Flatbush, Brooklyn. The property features a 4-bedroom duplex over a 1-bedroom apartment. The duplex includes large bedrooms, a living room, and a formal dining room. The property is located near stores, schools, restaurants, and houses of worship. The lot size is 0.0413 acres. The zoning is R4.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Law Firm Restaurant Real Estate Agency Spa & Massage Center Dental Office Hair Salon Nail Salon Food Market Gym & Fitness Center Grocery & Convenience Store

    Zoning and permitted uses should be independently verified with local authorities.

    Location Insight

    • Map
    • Local Demand
    City
    Brooklyn
    County
    Kings
    State
    New York
    Longitude
    -73.936993
    Latitude
    40.638538

    Nearby Similar for Sale

    • $999,000
      8,820 SF

      Established Supermarket Business For Sale

      High-volume supermarket business opportunity in Brooklyn's Bensonhurst/Gravesend neighborhood.
      65 Quentin Road, Brooklyn, NY 11223
      View Details
    • $375,000
      3,120 SF

      Established Restaurant in Sunset Park

      Turn-key Asian restaurant for sale in prime Sunset Park.
      5304 8th Avenue unit: 1, Brooklyn, NY 11220
      View Details
    • $549,000
      7,900 SF

      Established Karaoke Bar & Sushi

      Turnkey karaoke bar and sushi restaurant in Bensonhurst, Brooklyn.
      6115 20th Avenue, Brooklyn, NY 11204
      View Details
    • $349,000
      2,100 SF

      Thriving Store in Brooklyn's Brighton

      Turn-key general merchandise store with loyal customer base.
      611 Brighton Beach Avenue, Brooklyn, NY 11235
      View Details
    • $850,000
      1,200 SF

      Turnkey Medical Office in Brooklyn

      Equipped medical office in Sunset Park with high visibility.
      829 57th Street unit: 3, Brooklyn, NY 11220
      View Details
    • $2,190,000
      3,500 SF

      Luxury Atelier and Designer Showroom

      Turnkey, two-story luxury atelier and designer showroom in Sunset Park.
      821 39th Street, Brooklyn, NY 11232
      View Details
    • $1,899,000
      3,158 SF

      Kings Highway Commercial Unit

      Spacious commercial unit in a high-traffic Brooklyn location.
      366 Kings Highway unit: 1, Brooklyn, NY 11223
      View Details
    • $680,000
      2,380 SF

      Medical Condo in Sheepshead Bay

      Renovated medical office condo in prime Sheepshead Bay location.
      2752 Ocean Avenue, Brooklyn, NY 11229
      View Details
    • $1,299,000
      3,100 SF

      Turnkey Restaurant in Prime Location

      Refined, fully operational restaurant space in a high-traffic Brooklyn location.
      100 Lincoln Avenue, Brooklyn, NY 10306
      View Details
    • $3,690,000
      4,670 SF

      Bensonhurst Commercial Condo with Business

      4,670 sq ft commercial condo with established daycare business.
      2066 85th Street unit: 1A, Brooklyn, NY 11214
      View Details
    • $899,000
      2,879 SF

      Commercial Condo with Cellar Space

      Retail/office condo with cellar, parking, and tax abatement.
      2533 Ocean Avenue unit: C1, Brooklyn, NY 11229
      View Details
    • $2,980,000
      7,311 SF

      Brooklyn Commercial Building For Sale

      Commercial building with five tenants, elevator, and private driveway.
      8510 Bay 16th Street, Brooklyn, NY 11214
      View Details

    FAQs

    What type of property is this?
    Duplex - Large 2-family brick duplex in East Flatbush, Brooklyn.
    Where is this duplex located?
    The property is located at 680 E 42nd Street Brooklyn, NY.
    What is the asking price?
    The asking price for this property is $899,000.
    What are key features of this property?
    This property features: Large 4‑bedroom duplex over a 1‑bedroom apartment.; Solid brick construction.; Located in the heart of East Flatbush.
    (718) 272-6500
    We can help!
    Listing Contact
    Bozena Zgoda
    Learn More
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    Realmo Value Estimations

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.
    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.
    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!