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    Legal Two-Family Home with Balcony Title is generated by Realmo AI

    517 Herzel Boulevard, West Babylon, NY 11704

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    Pending
    $824,999

    MULTI_FAMILY - Other - West Babylon, NY

    Added:
    May 21, 2026
    Days on Market:
    15
    Last Refresh:
    Jun 4 at 4:06 pm

    Property Features for 517 Herzel Boulevard

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Bedrooms
    5
    Bathrooms
    3
    Rooms
    Basement, Dining Room, Bathroom 1, Bedroom 5, Bedroom 1, Bathroom 3, Bedroom 2, Bathroom 2, Bedroom 4, Bedroom 3
    Parking
    4
    Parking features
    Open, Oversize, Garage, Driveway
    Security features
    Security Lighting
    Window features
    Screens
    Patio and Porch features
    Patio
    Interior features
    First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Chandelier, Eat-in Kitchen, Entrance Foyer, Formal Dining, Natural Woodwork, Open Kitchen, Pantry, Storage, Washer/Dryer Hookup
    Exterior features
    Balcony, Lighting, Mailbox, Rain Gutters
    Fencing
    Chain Link
    Basement
    Finished, Full, Walk-Out Access, Storage Space
    Standard status
    Pending
    APN
    0100-129-00-02-00-074-000

    Taxes and HOA fees

    Tax Year
    2026
    Tax Annual Amount
    14372

    Utilities

    Utilities
    Cable Available
    Sewer type
    Public Sewer
    Heating system
    Natural Gas
    Cooling system
    Ductless
    Water source
    Public

    Building Details

    Year built
    1947
    Number of units
    2
    Flooring type
    Hardwood, Laminate, Carpet
    Building materials
    Vinyl Siding
    Architectural style
    Other
    Additional Structures
    Storage

    We can help!

    Listing Contact
    Peter Troffa

    Listing agent Peter Troffa

    Listing office Century 21 Crown Homes 333 Sunrise Hwy, West Islip, NY

    Listing date May 21, 2026

    MLS# 1002903 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.

    HighLights

    • Legal two‑family home with 5 bedrooms and 3 full bathrooms
    • Large oversized 2‑car garage plus driveway and open parking
    • New siding, new hot water heater, and 200 AMP electric service
    • Second‑floor balcony above the garage for outdoor living
    • First‑floor bedroom and first‑floor full bath, with eat‑in kitchen and pantry
    • Public utilities: public water and public sewer; natural gas heating and ductless cooling

    Overview

    This property is a legal two-family home designed for flexible living. The home includes a total of 5 bedrooms and 3 full bathrooms, with a spacious, versatile layout. Exterior improvements include new siding, and the mechanicals and electrical service have been upgraded with a new hot water heater and a 200-amp electric service. Parking and storage are supported by an oversized 2-car garage. Outdoor space is highlighted by a large second-floor balcony positioned above the garage, creating an additional area for everyday use or entertaining.

    Located in West Babylon, the address is 517 Herzel Boulevard in Suffolk County. The home is positioned for convenient access to shopping, dining, parks, and major roadways, which can be helpful for tenants, occupants, or buyers evaluating daily commute and lifestyle needs.

    As a two-family property, this home can suit buyers looking for an owner-occupant setup or an income-focused residential investment, based on the legal configuration and multi-unit layout. The combination of updated hot water and electrical capacity, along with recent exterior siding and meaningful outdoor and garage features, supports a practical, move-forward ownership experience. Prospective tenants and buyers should review the floor plans and unit configuration to confirm how the bedroom and bathroom layout fits their specific use plan.
    Property Profile 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 Grocery & Convenience Store Gym & Fitness Center

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

    Location Insight

    • Map
    • Local Demand
    City
    West Babylon
    County
    Suffolk
    State
    New York
    Longitude
    -73.382525
    Latitude
    40.716587

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    FAQs

    What type of property is this?
    Duplex - Well-maintained two-family residence with an oversized 2-car garage and updated systems, offering flexible living layout.
    Where is this duplex located?
    The property is located at 517 Herzel Boulevard West Babylon, NY.
    What is the asking price?
    The asking price for this property is $824,999.
    What are key features of this property?
    This property features: Legal two‑family home with 5 bedrooms and 3 full bathrooms; Large oversized 2‑car garage plus driveway and open parking; New siding, new hot water heater, and 200 AMP electric service
    (631) 879-8002
    We can help!
    Listing Contact
    Peter Troffa
    Request Owner's contact information
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    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
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