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    Residential Income Property with Apartment Title is generated by Realmo AI

    240 Demarest Rd, Sparta, NJ 07871

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    Claim this Listing
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    For Sale
    $1,300,000

    Commercial - Sparta Twp., NJ

    Property size:
    7,000 SF
    Lot size:
    8.95 Acres
    Price / SF:
    $185/SF
    Added:
    Jun 5, 2026
    Days on Market:
    2
    Last Refresh:
    Jun 6 at 2:06 am

    Property Features for 240 Demarest Rd

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Zoning
    RR
    Standard status
    Active
    Size
    7,000 SF
    Lot size
    8.95 Acres

    Taxes and HOA fees

    Tax Year
    2025
    Tax Annual Amount
    21879

    Building Details

    Year built
    2003
    Floors in Building
    2
    Number of units
    2
    Flooring type
    Tile, Wood
    Building materials
    Vinyl Siding
    Roof type
    Asphalt, Shingle
    Architectural style
    Other

    We can help!

    Listing Contact
    MARY SMITH

    Listing agent MARY SMITH

    Listing office WEICHERT REALTORS 92 WOODPORT ROAD, Sparta, NJ

    Listing date Jun 5, 2026

    MLS# 4032649 Listing URL

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

    HighLights

    • Nearly 9‑acre former train museum site just off Route 15
    • 7,000 SF building built in 2003
    • Includes a spacious 2‑bedroom apartment with lots of storage
    • Attached 2‑car garage
    • Parking available for 20 vehicles
    • Vinyl siding with tile and wood flooring and an asphalt shingle roof

    Overview

    Offered for sale is a substantial 7,000 sf building on 8.95 acres in Sparta Twp. The property features a spacious 2-bedroom apartment with ample storage, and an attached 2-car garage, along with parking for 20 vehicles. The existing construction quality is described as evident throughout the building, and the listing notes a farm assessment component that may provide additional flexibility for an owner.

    Located at 240 Demarest Rd in Sparta Twp., NJ 07871-3481, the site is described as a former train museum location, positioned just off Route 15. Zoning is listed as RR, and an appointment is required to view the property.

    This setup can be of interest to buyers seeking a residential income configuration with on-site parking and an attached garage, while also considering the size of the parcel for future use aligned with the RR zoning designation. The property’s existing improvements and the presence of the apartment provide a straightforward starting point for an owner who wants to adapt the site to their own vision.
    Location Intelligence

    Current Use by Public Records

    Friar Mountain Model ... Rail Museum

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Sparta
    County
    Sussex
    State
    New Jersey
    Longitude
    -74.66863
    Latitude
    41.08187

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    FAQs

    What type of property is this?
    Duplex - A 7,000 sf residential income building featuring a spacious 2-bedroom apartment, attached 2-car garage, and parking for 20.
    Where is this duplex located?
    The property is located at 240 Demarest Rd Sparta, NJ.
    What is the asking price?
    The asking price for this property is $1,300,000.
    What are key features of this property?
    This property features: Nearly 9‑acre former train museum site just off Route 15; 7,000 SF building built in 2003; Includes a spacious 2‑bedroom apartment with lots of storage
    (973) 219-5355
    We can help!
    Listing Contact
    MARY SMITH
    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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    240 Demarest Rd, Sparta Twp., NJ 07871-3481
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