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    The Largest CRE Database in the US with Over 1 Million Listings

    299 Main St Northport, NY 11768

    Sponsored
    For Lease
    $2,900 /Mo ($2 SF/Yr)

    COMMERCIAL - Northport, NY

    Type:Office
    Property size:
    1,693 SF
    Lot size:
    0.38 Acres
    Days on Market:
    6
    Last Refresh:
    Jan 27 at 5:06 pm

    Property Features for 299 Main St

    General Information

    Property type
    Commercial Lease
    Property subtype
    Office
    Standard status
    Active
    Zoning
    Office
    APN
    0404-010-00-01-00-048-000
    Size
    1,693 SF
    Lot size
    0.38 Acres

    Utilities

    Heating system
    Oil, Hot Water(Heating)

    Building Details

    Number of units
    1

    We can help!

    Listing Contact
    Mary McGrane

    Laffey International Realt Estate (516) 308-0550

    Listing agent Mary E. McGrane

    Listing date Jan 22, 2026

    MLS# L3527428

    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

    Northport Village Professional Office Space

    Located in Northport Village, this professional office space offers 1693.44 square feet suitable for dental, medical, or general professional use. The layout includes three treatment rooms measuring approximately 9x12, 10x16, and 10x10, a waiting room (13x12.5), a half bath (5x6), a reception area (9x8), a private office (9x10), a conference room or additional treatment room (10x16), and a laboratory (7.5x11.5 plus an alcove). The property features a ground-level rear entry without stairs, storage space, and some new carpeting. Large windows provide views of Main Street and a sunny southern exposure. Signage is available for exposure, benefiting from significant foot traffic in the village. Ample parking is available. The 0.38-acre lot is located in Suffolk County, NY.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Roger D. Curtiss, ... Dentist Flanagan Andrea Dentist Matt Aibel, LCSW Psychotherapist Eleanor Perlman, LCSW, ... Social Worker 1040 Woman Business Development Service

    Suggested Use

    Realty agency Law Firm Restaurant Spa & Massage Dental Office Hair Salon Nail Salon Clothing Store Building Supply Daycare Center

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

    Similar Places Nearby

    North Shore Veterinary Hospital

    Location Insight

    • Map
    • Local Demand
    City
    Northport
    County
    Suffolk
    State
    New York
    Longitude
    -73.344271
    Latitude
    40.901498

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    FAQs

    What type of property is this?
    Medical office - Spacious office ideal for medical or professional use in Northport.
    Where is this medical office located?
    The property is located at 299 Main St Northport, NY.
    What is the lease rate?
    The lease rate is $2 SF/Yr.
    What are key features of this property?
    This property features: - Spacious 1693.44 Sqft professional office suitable for medical, dental, or general professional use.; - Prime Northport Village location with high foot traffic and signage opportunity.; - Features 3 treatment rooms/offices, waiting room, reception area, private office, conference room/treatment room, and laboratory.
    (516) 308-0550
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    299 Main St Northport, NY 11768
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    Northport, NY 11768
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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
    299 Main St Northport, NY 11768
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    Listing Contact
    Mary McGrane
    (516) 308-0550
    Learn more
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