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    323 N Loomis St Naperville, IL 60540

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    For Sale
    Contact for pricing

    MULTI_FAMILY - Naperville, IL

    Lot size:
    0.18 Acres
    Days on Market:
    20
    Last Refresh:
    Feb 28 at 8:06 am

    Property Features for 323 N Loomis St

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Standard status
    Active
    Zoning
    MULTI
    Rooms
    Bathroom 1, Bathroom 2, Bedroom 1, Bedroom 4, Bedroom 2, Basement, Bedroom 3
    Bedrooms
    4
    Bathrooms
    2
    APN
    0818131020
    Parking
    4
    Parking features
    Owned, Garage
    Basement
    Full
    Lot size
    0.18 Acres

    Utilities

    Sewer type
    Public Sewer
    Water source
    Public

    Building Details

    Year built
    1920

    We can help!

    Listing Contact
    Doreen Booth
    Doreen Booth

    Baird & Warner (630) 853-2370

    Listing agent Doreen Booth (425) 275-7323

    Listing date Feb 9, 2026

    MLS# 12436080

    Copyright © 2026 Midwest Real Estate Data, LLC. 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

    Naperville Duplex Redevelopment Opportunity

    This property in Naperville presents a redevelopment or investment opportunity. Zoned R2 - Single-Family & Low Density Multi-Family Residence District, the lot is suitable for redevelopment. Currently, the property features a two-story side-by-side duplex with hardwood floors and ceiling fans. Each unit includes a 12x12 eat-in kitchen and a large, private basement equipped with washer and dryer hookups. A two-car garage is also present. The property is situated in a residential neighborhood in central Naperville and includes a large yard with a garden area. Located within a six-block area are the PACE Bus and Metra station, RiverWalk, restaurants, shopping, health clubs, local city and university libraries, churches, parks, and Centennial Swimming Pool with picnic grounds and a sandy beach. The Metra/PACE Station is a 3-minute walk, offering non-stop commuter express trains to Chicago and PACE Bus local connections, as well as to Wheaton and COD Community College Campus. A nearby bike path connects to the Du Page River Trail, and Metra allows bikes on trains with unlimited weekend travel passes on all Metra Routes. The lot size is 0.18 acres.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Naperville
    County
    Will
    State
    Illinois
    Longitude
    -88.1425904
    Latitude
    41.7790447

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    FAQs

    What type of property is this?
    Duplex - Duplex near Metra station, ideal for redevelopment or investment.
    Where is this duplex located?
    The property is located at 323 N Loomis St Naperville, IL.
    What are key features of this property?
    This property features: - Prime Location: Steps from Naperville Metra Station and Downtown Naperville.; - Redevelopment Opportunity: Zoned R2 for Single-Family & Low-Density Multi-Family Residence.; - Existing Income Potential: Spacious, sunny two-story side-by-side duplex.
    (425) 275-7323
    Request Owner's contact information
    323 N Loomis St Naperville, IL 60540
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    Naperville, IL 60540
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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
    323 N Loomis St Naperville, IL 60540
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    We can help!
    Listing Contact
    Doreen Booth
    Doreen Booth
    (425) 275-7323 (630) 853-2370
    Learn more
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