Add Listing
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    Back to Search
    Piscataway Two-Family Home For Sale Title is generated by Realmo AI

    307 Rock Ave, Piscataway, NJ 08854

    View on Map
    Claim this Listing
    For Sale
    $695,000

    Multi-Unit (2-4) - Piscataway, NJ

    Lot size:
    0.17 Acres
    Added:
    Dec 30, 2025
    Days on Market:
    151
    Last Refresh:
    May 30 at 4:06 pm

    Property Features for 307 Rock Ave

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Zoning
    100
    Bedrooms
    4
    Bathrooms
    2
    Rooms
    Basement, Bathroom 1, Bathroom 2, Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4, Kitchen
    Parking features
    Garage, Garage - Detached
    Basement Y/N
    1
    Standard status
    Active
    APN
    17002090000
    Lot size
    0.17 Acres

    Taxes and HOA fees

    Tax Annual Amount
    0

    Building Details

    Year built
    1919
    Year renovated
    1919
    Floors in Building
    2
    Building materials
    Brick, Vinyl Siding
    Architectural style
    Other

    We can help!

    Listing Contact
    Christian Marolakos

    Listing agent Christian Marolakos

    Listing office EXP Commercial 28 Valley Rd Suite 1,, Montclair, NJ

    Listing date Dec 30, 2025

    MLS# 11623305 Listing URL

    Copyright © 2026 My State 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

    • Two‑family home offering immediate rental income from the first‑floor unit ($2,495/month).
    • Second‑floor unit is vacant and move‑in ready.
    • Potential to increase property value by converting the attic into additional living space for the second‑floor unit, creating a 3BR/2Bath configuration.
    • Detached garage provides an opportunity for additional rental income (previously rented for $650/month).
    • Property features a backyard.
    • Durable construction with brick and vinyl siding.

    Overview

    This two-family home is located on Rock Avenue in Piscataway, New Jersey. The property includes two units, each featuring two bedrooms and one bathroom. Additional features include a garage, backyard, and attic. The first-floor unit is currently rented for $2,495 per month. The second-floor unit is vacant and move-in ready. There are several opportunities to add value to the property. The garage could be rented for additional income, previously rented for $650 per month. The attic presents another potential value-add opportunity by converting it into more living space for the second-floor unit. Currently, the attic has its own separate entrance and is not connected to the second-floor unit. There is potential to convert the second-floor unit into a three-bedroom, two-bathroom configuration with the addition of the attic space. The property is situated on a lot of approximately 0.17 acres.
    Property Profile Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Piscataway
    County
    Middlesex
    State
    New Jersey
    Longitude
    -74.450925
    Latitude
    40.595468

    Nearby Similar for Sale

    • $750,000
      1,600 SF

      Freestanding Retail/Office Building For Sale

      1,600 SF retail/office building in a prime location.
      136 Stelton Road, Piscataway, NJ 08854
      View Details
    • $2,700
      6,547 SF

      Piscataway Commercial Office Suite

      Adaptable 1,050 sqft office suite suitable for various business uses.
      1140 Stelton Road, Piscataway, NJ 08854
      View Details
    • $1,800,000
      7,200 SF

      Piscataway Industrial Building on Acreage

      7,200 SF industrial building on 1.09 acres for sale.
      145 11th St, Piscataway Twp., NJ 08854
      View Details
    • $1,450
      3,600 SF

      Piscataway Twp. Medical/Professional Office

      Renovated 1,000 SF suite in high-visibility building, Piscataway business corridor.
      451 S Washington Ave, Piscataway Twp., NJ 08854
      View Details
    • $1,800,000
      7,122 SF

      Industrial Building with Outdoor Storage

      7,200 SF industrial building on 1.09 acres for sale.
      145 11th St, Piscataway, NJ
      View Details
    • $4,950,000
      16,452 SF

      Medical Building For Sale

      Two-story medical building with diverse tenants and investment potential.
      1100 Centennial, Piscataway, NJ 08854
      View Details
    • Contact for pricing
      3,380 SF

      Medical Office Condos For Sale

      Medical office condos in Central Jersey Medical & Professional complex.
      1-2 Wills Way, Piscataway, NJ 08854
      View Details
    • $370,000
      1,100 SF

      Piscataway Office Condo For Sale

      Ground floor office condo ideal for medical or professional use.
      250 Stelton Rd, Piscataway Twp., NJ 08854-3285
      View Details
    • Contact for pricing
      3,380 SF

      Medical Office Condos For Sale

      Medical office condos in Central Jersey Medical & Professional complex.
      1-2 Wills Way, Piscataway, NJ 08854
      View Details
    • $2,250
      1,000 SF

      Piscataway Professional Office Space

      Renovated office suite with flexible space in Piscataway, NJ.
      216 Stelton Road, Piscataway, NJ 08854
      View Details
    • $330,000
      1,000 SF

      Piscataway Commercial Condo For Sale

      Recently renovated commercial condo ideal for medical or professional office.
      216 Stelton Road, Piscataway, NJ 08854
      View Details
    • $330,000
      1,000 SF

      Piscataway Twp. Commercial Office Condo

      Renovated condo ideal for medical or professional office use.
      216 Stelton Rd, Piscataway Twp., NJ 08854-3284
      View Details

    FAQs

    What type of property is this?
    Duplex - Two-family home in Piscataway with value-add opportunities.
    Where is this duplex located?
    The property is located at 307 Rock Ave Piscataway, NJ.
    What is the asking price?
    The asking price for this property is $695,000.
    What are key features of this property?
    This property features: Two‑family home offering immediate rental income from the first‑floor unit ($2,495/month).; Second‑floor unit is vacant and move‑in ready.; Potential to increase property value by converting the attic into additional living space for the second‑floor unit, creating a 3BR/2Bath configuration.
    (973) 342-0948
    We can help!
    Listing Contact
    Christian Marolakos
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    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
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Thank You for Inquiry
    307 Rock Ave, Piscataway, NJ 08854
    letter with green check mark
    Check your email
    We sent you the
    agent's contact details. yellow underline
    Can't find it?
    Please check your junk/spam folder.
    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!