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    O Fallon, IL
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    O Fallon, IL Office Spaces for Sale

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    Swansea, IL Freeburg, IL Smithton, IL
    31 results
    Versatile Mixed-Use Commercial Building
    $799,000
    5,890 SF
    Versatile Mixed-Use Commercial Building

    O Fallon, IL 62269

    Multi-use commercial building in O'Fallon with live-work potential.
    • High‑visibility corner lot location in the heart of O’Fallon.
    • Multi‑use commercial building suitable for daycare, medical facility, or professional office space.
    • Main level includes a room specially constructed for an X‑ray machine.
    • Full basement with living space for a live‑work arrangement.
    • Large detached garage and ample off‑street parking.
    Updated: Oct 16, 2025
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    Historic Mixed-Use Building in Belleville
    $299,000
    3,200 SF
    Historic Mixed-Use Building in Belleville

    18 E Main Street, Belleville, IL 62220

    Two-story mixed-use building in downtown Belleville's commercial corridor.
    • Historic 3,200 SF mixed‑use building in downtown Belleville
    • Income‑generating property with existing tenants: Justitia's Coffee Bar and Olive Oil Market Place
    • Prime Main Street location with high pedestrian traffic and walkability
    • Zoned C1 Commercial, offering versatile usage options
    • Proximity to MetroLink transit access
    Updated: Mar 10
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    Downtown Belleville Office Building
    $299,000
    8,744 SF
    Downtown Belleville Office Building

    8,500+ sq ft office building near St. Clair Courthouse.

    12 W Lincoln Street, Belleville, IL 62220

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    Refurbished Office Space in Belleville
    $56,000
    1,152 SF
    Refurbished Office Space in Belleville

    Refurbished office space in downtown Belleville near the courthouse.

    6 Lebanon Avenue, Belleville, IL 62220

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    Mixed-Use Building Near Downtown Belleville
    $240,000
    2,926 SF
    Mixed-Use Building Near Downtown Belleville

    Two-story mixed-use property with commercial space and updated apartment.

    719 Centreville Avenue, Belleville, IL 62220

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    Belleville Commercial Property on 38th
    $140,000
    Belleville Commercial Property on 38th

    Adaptable commercial space with high visibility in Belleville, Illinois.

    626 N 38th Street, Belleville, IL 62226

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    Medical Building with Multiple Suites
    $250,000
    6,500 SF
    Medical Building with Multiple Suites

    6,500 SF medical building with three suites for sale.

    3608 W Main St, Belleville, IL

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    Downtown Belleville Office For Sale
    $125,000
    0.07 Acres
    Downtown Belleville Office For Sale

    Office space in downtown Belleville with off-street parking.

    122 W Main St, Belleville, IL

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    Belleville Medical Office Investment Opportunity
    $475,000
    4,640 SF
    Belleville Medical Office Investment Opportunity

    Net leased medical office building with lease extension and roof replacement.

    4904 W Main St, Belleville, IL

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    Medical Office in Copper Bend
    $149,000
    2,030 SF
    Medical Office in Copper Bend

    2,030 SF medical office in established office park.

    2900 Frank Scott Pkwy W, Belleville, IL 62223

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    Office Space with Interstate Visibility
    Contact for pricing
    580 SF
    Office Space with Interstate Visibility

    Office space for rent with excellent interstate access and visibility.

    1550-1562 Frontage Rd, O Fallon, IL 62269

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    O'Fallon Office Building For Sale
    $9,100,000
    6,819 SF
    O'Fallon Office Building For Sale

    6,819 SqFt office building in O'Fallon, Illinois.

    O Fallon, IL 62269

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    Mixed-Use Investment Property For Sale
    $325,000
    7,888 SF
    Mixed-Use Investment Property For Sale

    Mixed-use investment property in downtown Belleville with residential and commercial spaces.

    100 Mascoutah Ave, Belleville, IL

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    Belleville Office Building For Sale
    $725,000
    8,454 SF
    Belleville Office Building For Sale

    8,454 SF office building available in Belleville, Illinois.

    1520 Mascoutah Ave, Belleville, IL

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    Former Law Office For Sale
    $115,000
    2,716 SF
    Former Law Office For Sale

    2,716 SF office space in high visibility location.

    3540 N Belt W, Belleville, IL

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    Office/Warehouse Building For Sale
    Contact for pricing
    20,176 SF
    Office/Warehouse Building For Sale

    Office/warehouse building with spaces for lease and interstate access.

    O Fallon, IL 62269

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    Belleville Office Building For Sale
    $250,000
    9,114 SF
    Belleville Office Building For Sale

    9,114 square foot office building in Belleville, Illinois.

    140 Iowa, Belleville, IL

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    Highway 50 Development Opportunity
    $575,000
    1.42 Acres
    Highway 50 Development Opportunity

    1.42 acres on Highway 50 in O'Fallon, Illinois.

    O Fallon, IL 62269

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    East Belleville Office/Retail Building
    $140,000
    2,496 SF
    East Belleville Office/Retail Building

    2,496 SF office/retail building in East Belleville for sale.

    1820 N Belt E, Belleville, IL

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    Remodeled Office Building with Warehouse
    $725,000
    8,454 SF
    Remodeled Office Building with Warehouse

    Remodeled office building with warehouse, ample parking, and generator.

    1520 Mascoutah Ave, Belleville, IL 62220

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    East Belleville Office/Retail Building
    $140,000
    2,496 SF
    East Belleville Office/Retail Building

    Freestanding 2,496 SF office/retail building in East Belleville.

    1820 N Belt E, Belleville, IL 62221

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    Office Building with Signage
    $215,000
    7,926 SF
    Office Building with Signage

    7,926 SF building with space for lease and signage.

    1801 N Belt W, Belleville, IL

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    Belleville Retail/Office Opportunity
    $1,395,000
    3,557 SF
    Belleville Retail/Office Opportunity

    Retail/office space available for sale in Belleville, Illinois.

    648 Carlyle Ave, Belleville, IL 62221

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    Belleville Office Building For Sale
    $215,000
    7,926 SF
    Belleville Office Building For Sale

    7,926 SF office building for sale or lease.

    1801 N Belt W, Belleville, IL 62226

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    O Fallon, IL Office Spaces Investment Opportunities Market Analysis

    Explore 46 office spaces for sale in O Fallon, IL, showcased through 31 active listings on our real estate platform. These investment opportunities span a total of 225,340 square feet of properties for sale, with an estimated market value of $24,279,500.

    Sale prices for office spaces in O Fallon, IL start at $65,000, averaging $933,826, and reaching up to $9,100,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    6-Month New Listing Trend

    Monthly new listing volume vs. 6-month average in O Fallon.

    Top Commercial Asset Segments

    Office Units 15
    Medical Office Space 2
    Office buildings 1
    Serviced offices 1

    Demographics Overview

    Population 36K
    Population Growth (5Y) +11.0%
    Median Household Income $100,167
    College Educated 74.8%

    High-Yield Neighborhoods for Strategic Investment

    Identify O Fallon submarkets with the highest inventory density on the market and evaluate the median listing prices of real estate assets

    Neighborhood Average Price
    62269 $2.7M

    Taxes & Financing

    Average Loan-to-Value 65.0%

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    Most Searched ZIP Codes in O Fallon, IL

    • 62220
    • 62269
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