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    Prime Setauket Office Condo Title is generated by Realmo AI

    100 S Jersey Avenue, Setauket, NY 11733

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    Claim this Listing
    For Sale
    $325,000

    COMMERCIAL - Setauket, NY

    Lot size:
    0.02 Acres
    Added:
    Jan 13, 2026
    Days on Market:
    121
    Last Refresh:
    May 14 at 4:06 am

    Property Features for 100 S Jersey Avenue

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Zoning
    J4
    Appliances
    Refrigerator
    Standard status
    Active
    APN
    0200-110-10-01-00-035-000
    Lot size
    0.02 Acres

    Taxes and HOA fees

    Tax Year
    2025
    Tax Annual Amount
    5842

    Utilities

    Utilities
    Electricity Available
    Sewer type
    Public Sewer
    Heating system
    Natural Gas, Forced Air
    Cooling system
    Central Air
    Water source
    Public

    Building Details

    Floors in Building
    1
    Flooring type
    Carpet, Tile - Ceramic
    Building materials
    Vinyl Siding

    We can help!

    Listing Contact
    Donna McKeown

    Listing agent Donna McKeown

    Listing office Signature Premier Properties 275 Route 25a, Huntington, NY

    Listing date Jan 13, 2026

    MLS# 950728

    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

    • Prime location in Heritage Square Office Condos, Setauket, offering high visibility and a professional atmosphere.
    • Versatile layout with three private office suites, a spacious communal work area, and a dedicated reception area.
    • Ideal for a variety of businesses including health/wellness, medical, legal, or professional services.
    • Conveniently located near Stony Brook University, Stony Brook Hospital, the train station, and Port Jefferson Village.
    • Includes essential amenities: kitchen with refrigerator and sink, and a private bathroom.
    • Ample on‑site parking and an updated (6 yr old) heating system.

    Overview

    Located in the Prime Heritage Square Office Condos in Setauket, this commercial office space offers visibility and functionality in an active business corridor. The layout includes three private office suites with French doors, providing both privacy and natural light. A spacious communal work area offers flexibility for various uses. A dedicated reception area creates a professional first impression, and the kitchen space includes a refrigerator and sink. A private bathroom is also included. The space is suitable for health and wellness practices, medical or clinical use, professional services, legal offices, personal training, or yoga and movement-based businesses. Ample on-site parking and a professional environment are available. The location is minutes from Stony Brook University and Stony Brook Hospital, with access to the train station and Downtown Port Jefferson Village. Situated behind a neighborhood coffee house, the location benefits from foot traffic and visibility within a thriving business community. The heating system is 6 years old. The property is situated on a lot of approximately 0.0237 acres.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Michelle Conelli, LMFT Physician Paul Botticelli, LCSW Physician Holistic Health Center Physician Setauket Consultation Center Crisis Center Evelyn H. Peterson, ... Physician

    Suggested Use

    Restaurant Real Estate Agency Law Firm Building Supply Spa & Massage Center Dental Office Big Box & Wholesale Store Auto Repair Shop Hair Salon Nail Salon

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

    Location Insight

    • Map
    • Local Demand
    City
    Setauket
    County
    Suffolk
    State
    New York
    Longitude
    -73.109219
    Latitude
    40.939766

    FAQs

    What type of property is this?
    Office units - Polished commercial office space in a sought-after Setauket location.
    Where is this office units located?
    The property is located at 100 S Jersey Avenue Setauket, NY.
    What is the asking price?
    The asking price for this property is $325,000.
    What are key features of this property?
    This property features: Prime location in Heritage Square Office Condos, Setauket, offering high visibility and a professional atmosphere.; Versatile layout with **three private office suites, a spacious communal work area, and a dedicated reception area.**; Ideal for a variety of businesses including health/wellness, medical, legal, or professional services.
    (917) 865-6249
    We can help!
    Listing Contact
    Donna McKeown
    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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