Sign Up Successful!
You now have access to more from Realmo!
    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

    255 Delaware Ave Island Park, NY 11558

    Sponsored
    For Sale
    $1,149,876

    MULTI_FAMILY - Ranch - Island Park, NY

    Type:Single Family Residence
    Lot size:
    0.12 Acres
    Days on Market:
    1
    Last Refresh:
    Feb 4 at 6:06 pm

    Property Features for 255 Delaware Ave

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Single Family Residence
    Standard status
    Active
    Rooms
    Dining Room
    APN
    2089-43-092-00-0102-0
    Parking features
    Driveway
    Interior features
    Eat-in Kitchen, Formal Dining, First Floor Bedroom, Granite Counters, Primary Bathroom
    Lot size
    0.12 Acres

    Utilities

    Utilities
    Cable Available
    Sewer type
    Public Sewer
    Heating system
    Natural Gas, Baseboard
    Cooling system
    Ductless
    Water source
    Public
    Water front features
    Waterfront
    Water front
    1

    Building Details

    Year built
    1962
    Number of units
    2
    Building materials
    Brick, Frame, Vinyl Siding
    Architectural style
    Ranch

    We can help!

    Listing Contact
    Thomas Tripodi

    Douglas Elliman Real Estate

    Listing agent Thomas Tripodi

    Listing date Feb 4, 2026

    MLS# 958577 Listing URL

    Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Learn more

    Property Insight Report

    Overview

    Waterfront Duplex with Bay Views

    This direct waterfront duplex property offers breathtaking bay views. It features a newly installed bulkhead, a private dock, and a floating dock, making it ideal for boating and water activities. A one-car detached garage provides added convenience. The spacious second-floor unit includes an open-concept kitchen and a large living/dining area with water views. The master bedroom suite has an en-suite bath, and there are two additional bedrooms and a full bath. The lower-level unit is a cozy 1-bedroom, 1-bathroom layout with a private entrance. It also features a combined living/dining area, kitchen, and ductless air conditioning. The property is vacant and move-in ready. The lot size is 0.12 acres. The property is located in Island Park, Nassau County, NY.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Real Estate Agency Law Firm Restaurant Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Gym & Fitness Center Auto Repair Shop

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

    Location Insight

    • Map
    • Local Demand
    City
    Island Park
    County
    Nassau
    State
    New York
    Longitude
    -73.645698
    Latitude
    40.601201

    Nearby Similar for Sale

    • New
      $777,000
      Pending

      Renovated Two-Family Home with Basement

      Legal two-family home with basement and tenant-occupied apartment.
      19 Parma Rd, Island Park, NY 11558
      View Details
    • $190,000
      0.09 Acres

      Island Park Restaurant Opportunity

      Established restaurant location for sale in Island Park, NY.
      166 Long Beach Rd, Island Park, NY 11558
      View Details
    • $874,999

      Renovated Two-Family Home Near LIRR

      Two renovated units with private outdoor spaces and income potential.
      41 Ostend Rd, Island Park, NY 11558
      View Details
    • $809,999
      Pending

      Island Park Two-Family Home

      Two-family home in Island Park near Long Beach.
      64 Kent Rd, Island Park, NY 11558
      View Details
    • $719,999
      Pending

      Updated Two-Family Home in Island Park

      Charming, legal two-family home in Island Park, Nassau County, NY.
      185 Quebec Rd, Island Park, NY 11558
      View Details

    FAQs

    What type of property is this?
    Duplex - Waterfront duplex with private dock and breathtaking bay views.
    Where is this duplex located?
    The property is located at 255 Delaware Ave Island Park, NY.
    What is the asking price?
    The asking price for this property is $1,149,876.
    What are key features of this property?
    This property features: - Direct waterfront property with breathtaking bay views.; - Private dock and floating dock, ideal for boating and water activities.; - Two-family home offering flexibility and potential rental income.
    (516) 431-6328
    Request Owner's contact information
    255 Delaware Ave Island Park, NY 11558
    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.
    255 Delaware Ave
    Island Park, NY 11558
    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
    255 Delaware Ave Island Park, NY 11558
    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

    We can help!
    Listing Contact
    Thomas Tripodi
    (516) 431-6328
    Learn more
    Google sign-in failed. Please try again or use another login method.