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    521 Oak St Copiague, NY 11726

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    For Lease
    $2,500 /Mo

    Well-maintained upper unit office with abundant natural light.

    Type:Commercial
    Added:
    Apr 24, 2026
    Days on Market:
    5
    Last Refresh:
    Apr 24 at 8:33 pm

    Property Features for 521 Oak St

    General Information

    Standard status
    Active
    Property subtype
    Commercial

    Building Details

    Year Built
    1993

    We can help!

    Listing Contact
    Joanne Kefalas

    Listing agent Joanne Kefalas License #10401318019

    Listing office Anthony Napolitano Homes

    Listing date Apr 24, 2026

    Source Elliman

    Displayed information is deemed reliable but is not guaranteed and should be independently verified.

    All listing content including descriptions, pricing, images are the copyrighted material of Anthony Napolitano Homes

    Overview

    Bright Office Space Available

    This well-maintained upper unit office offers abundant natural light and a bright, professional atmosphere. It is ideal for a small business or professional seeking a turnkey workspace. The unit includes a private bathroom, and all utilities are included for a simple, predictable monthly cost. The location is close to transportation. The walk score is 66, indicating it is somewhat walkable, and the bike score is 46, indicating it is somewhat bikeable.
    Location Intelligence

    Current Use by Public Records

    Johnnie’s Car Wash ... Car Wash

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Copiague
    County
    Suffolk
    State
    New York
    Longitude
    -73.397023
    Latitude
    40.680696

    Nearby Similar for Lease

    • $2,500/Mo

      Well-Maintained Office Space Available

      Turnkey office space with natural light and included utilities.
      521 Oak Street, Copiague, NY 11726
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    • $1,650/Mo

      Newly Renovated Office Suites Available

      Office suites in Copiague, near LIRR and amenities.
      1732 Great Neck Rd, Copiague, NY 11726
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    • $25 SF/Yr

      Copiague Retail and Office Space

      Retail and office spaces for lease in Copiague, NY.
      1909 Great Neck Rd., Copiague, NY 11726
      View Details
    • $1,650/Mo

      Renovated Office/Retail Space in Copiague

      Newly renovated office/retail space in high-traffic Copiague location.
      1940 Great Neck Road, Copiague, NY 11726
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    • Contact for pricing

      Vented Former Restaurant End Cap

      Former restaurant space available with ample parking and high traffic.
      901 Montauk Hwy, Copiague, NY
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      Retail Space on Sunrise Highway

      Retail spaces available on high-visibility Sunrise Highway.
      1255-1287 Sunrise Hwy, Copiague, NY
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    • Contact for pricing

      Former Rite Aid Retail Space

      11,347 SF retail space with frontage on Montauk Highway.
      901-925 Montauk Highway, Copiague, NY 11726
      View Details

    FAQs

    What type of property is this?
    Office units - Well-maintained upper unit office with abundant natural light.
    Where is this office units located?
    The property is located at 521 Oak St Copiague, NY.
    What is the lease rate?
    The lease rate is $2,500 /Mo.
    What are key features of this property?
    This property features: Turnkey Workspace: Ready for immediate occupancy.; All Utilities Included: Simplifies budgeting.; Abundant Natural Light: Creates a bright atmosphere.
    (516) 606-2060
    We can help!
    Listing Contact
    Joanne Kefalas
    Real Estate License ID: 10401318019
    Learn More
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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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