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    Medical/Office Building in Carol Stream

    501-517 Thornhill Drive Carol Stream, IL 60188

    Claim this Listing
    For Sale
    $3,472,651

    COMMERCIAL - Carol Stream, IL

    Type:Office
    Property size:
    18,430 SF
    Lot size:
    3.46 Acres
    Price / SF:
    $188/SF
    Added:
    Apr 10, 2026
    Days on Market:
    94
    Last Refresh:
    Jul 12 at 8:06 pm

    Property Features for 501-517 Thornhill Drive

    General Information

    Property type
    Commercial Sale
    Property subtype
    Office
    Zoning
    OFFIC
    Standard status
    Active
    APN
    0504312001
    Size
    18,430 SF
    Lot size
    3.46 Acres

    Taxes and HOA fees

    Tax Year
    2024
    Tax Annual Amount
    32170

    Utilities

    Cooling system
    Central Air

    Building Details

    Year built
    1982
    Floors in Building
    1
    Number of units
    15
    Building materials
    Brick

    Listing agent David Piotrowski License #475155906

    Listing office Keller Williams ONEChicago 2211 N. Elston Ave. Suite 40, Chicago, IL

    Listing date Apr 10, 2026

    MLS# 12612071

    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.

    Investment Insights

    Based on property information with market context.

    The West Building at Mona Kea Medical Park, located at 501-517 Thornhill Drive in Carol Stream, Illinois, is a multi-tenant office and medical building. It is positioned near the intersection of Schmale Road and Thornhill Drive, offering convenient access to nearby retailers such as Home Depot and Chase Bank, and surrounding commercial corridors. The building provides a variety of suite sizes, ranging from 1,174 sq ft to 18,430 sq ft, suitable for office or medical users. Both main level and lower level spaces are available. Suites feature multiple private offices and exam rooms, making the property well-suited for medical, therapy, professional office, and service-related businesses. Approximately 3.5 parking spaces per 1,000 square feet are available. Ownership owns 10 PIN between both building about 38,161 total sq ft. The property is located in DuPage County, Illinois, and has a lot size of 3.46 acres.

    Key Highlights

    • Versatile suite sizes from 1,174 sqft to 18,430 sq ft, suitable for office or medical tenants.
    • Convenient location near Schmale Road and Thornhill Drive, offering easy access to commercial areas and retailers.
    • Well‑suited for medical, therapy, professional office, and service‑related businesses, featuring multiple private offices and exam rooms.

    Local Financial Insights For Office B

    Simulate Cap Rate and NOI

    NOI Build-Up
    Vacancy
    income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
    EGI (Effective Gross Income)
    gross rent minus vacancy losses — the realistic income before paying operating costs.
    OpEx (Operating Expenses)
    recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
    NOI (Net Operating Income)
    income a property generates after operating costs but before financing and taxes.

    Component $ $/SF
    Gross rent $451.2k $24.48
    − Vacancy −$112.3k −$6.10
    EGI $338.8k $18.38
    − OpEx −$84.7k −$4.60
    NOI $254.1k $13.79
    18,430 SF · lease $24.48/SF/yr · vacancy 24.90% · expense 25.00%

    Alternative Uses

    Best Use
    Office B
    $3.63M
    $3.18M – $4.24M (±1% cap)
    NOI $254,119 @ 7.0% cap · market cap 7.32%
    Second Best
    Healthcare Medical
    $3.49M
    $3.05M – $4.07M (±1% cap)
    NOI $244,161 @ 7.0% cap · market cap 7.03%
    Theoretical Best
    Office A
    $6.36M
    $5.57M – $7.42M (±1% cap)
    NOI $445,413 @ 7.0% cap · market cap 12.83%
    Zoning and permitted uses should be independently verified with local authorities.

    Property Analytics

    Property Profile Location Intelligence

    Current Use by Public Records

    Medical Office Space

    Suggested Use

    Law Firm Hotel & Motel Auto Parts Store Restaurant Storage Facility Accounting Firm Grocery & Convenience Store Spa & Massage Center Bakery Hair Salon

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

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    FAQs

    What type of property is this?
    Medical Office Space - Multi-tenant building suitable for medical, office, and service-related businesses.
    Where is this medical office space located?
    The property is located at 501-517 Thornhill Drive Carol Stream, IL.
    What is the asking price?
    The asking price for this property is $3,472,651.
    What are key features of this property?
    This property features: Versatile suite sizes from 1,174 sqft to 18,430 sq ft, suitable for office or medical tenants.; Convenient location near Schmale Road and Thornhill Drive, offering easy access to commercial areas and retailers.; Well‑suited for medical, therapy, professional office, and service‑related businesses, featuring multiple private offices and exam rooms.
    Contact an agent
    (312) 216-2422
    We can help!
    Contact an agent
    David Piotrowski
    David Piotrowski
    Real Estate License ID: 475155906
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