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    O Fallon, IL
    Duplex

    O Fallon, IL Duplexes for Sale

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    Swansea, IL Shiloh, IL Millstadt, IL Freeburg, IL Smithton, IL Fairview Heights, IL Caseyville, IL East St Louis, IL
    Found 31 duplex listings for sale in O Fallon, IL, averaging $98/sq ft. Use valuation data to compare deals faster.
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    Duplex with Finished Basements
    Updated: Aug 15
    Duplex with Finished Basements

    O Fallon, IL 62269

    $675,000
    2,142 sqft 0.67 AC lot
    Two‑unit duplex with 2 bedrooms and 3 bathrooms on each side
    Left side: ~1,375 sq ft with ~500 sq ft garage; right side: 1,420 sq ft with ~490 sq ft garage
    Each unit includes approximately 725 sq ft of partially finished basement space
    0.67‑acre property at 106 S Lawn Avenue, O'Fallon, IL 62269
    Covered composite decks overlook a deep backyard
    View details
    Brick Duplex with Private Yard
    Updated: Nov 2
    Brick Duplex with Private Yard

    619 E McKinley Street, Belleville, IL 62220

    $129,900
    2,344 sqft 0.20 AC lot
    2,344‑square‑foot duplex on a 0.2‑acre lot
    Two units, each with two upstairs bedrooms and a main‑level living room, eat‑in kitchen, full bath and dining or bonus room
    One unit has updated flooring, paint, kitchen and bath finishes
    The other unit has a newer furnace; the building also has newer windows
    Both units passed occupancy inspections; tenant rights apply and the property is sold as‑is
    View details
    Brick Duplex with Garage
    Brick Duplex with Garage

    609-611 E C Street, Belleville, IL 62220

    $229,900
    2 units  2,820 sqft  1 building  2-story  Built 1877  brick  0.16 acres
    $33,600 gross income

    Both residences include three bedrooms, one bathroom, and basement laundry hookups.

    2 x 3BR/1BA  Covered back porch  Private basement with laundry hookups
    View details
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    New Construction Duplex
    New Construction Duplex

    O Fallon, IL 62269

    $675,000
    2 units  2,142 sqft  1 building

    Both residences include private, partially finished lower levels with additional storage space.

    2 x 2BR/3BA
    View details
    Two-Unit Duplex with Off-Street Parking
    Two-Unit Duplex with Off-Street Parking

    517 Mascoutah Avenue, Belleville, IL 62220

    $129,900
    2 units  1,813 sqft  Built 1887  0.39 acres

    Two residences offer central air, deck space, and public water service on a 0.39-acre parcel.

    Utilities to site  2 x 2BR/1BA  Off street parking
    View details
    Duplex with Carport
    Duplex with Carport

    2402 College Avenue, Belleville, IL 62221

    $165,000
    2 units  1,920 sqft  Built 1981  0.41 acres

    One unit is tenant-occupied, and the other can be used by an owner or rented separately.

    View details
    Renovated Duplex
    Renovated Duplex

    1610 W Main Street, Belleville, IL 62220

    $77,000
    2 units  1,232 sqft  1 building  Built 1947 / renov 2018  0.06 acres
    $600/mo avg rent  Transit access  C2 Heavy Commercial

    C-2 zoning allows business use alongside two residential units.

    1 x 1BR  1 x 2BR
    View details
    Two-Unit Duplex with Private Parking
    Two-Unit Duplex with Private Parking

    109 S 27th St, Belleville, IL 62226

    $149,000
    2 units  1,028 sqft
    Transit access

    Separate unfinished basements provide both residences with additional storage space.

    Private parking lot  Full unfinished basements
    View details
    Corner Duplex Property
    Corner Duplex Property

    O Fallon, IL 62269

    $400,000
    1,500 sqft  Built 1960  0.35 acres
    Highway access  Road access  B-1

    B-1-zoned property with two two-bedroom units and frontage along Highway 50 and Brookside.

    View details
    Two-Unit Duplex with Carports
    Two-Unit Duplex with Carports

    18 Kingsway Drive, Belleville, IL 62226

    $169,900
    2 units  2,100 sqft  Built 1979  0.19 acres

    Stone construction includes central air, forced-air heating, and public water service.

    Carports
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    Cottage-Style Duplex
    Cottage-Style Duplex

    1214 Lebanon Ave, Belleville, IL 62221

    $130,000
    2 units  1,672 sqft  Built 1890  cottage-style  Single tenant

    Two one-bedroom units with off-street parking; one unit is currently rented.

    2 x 1BR
    View details
    C-2 Mixed-Use Duplex
    C-2 Mixed-Use Duplex

    1610 W Main Street, Belleville, IL 62220

    $77,000
    0.06 acres  Built 1947 / renov 2018
    C2 Heavy Commercial

    Two separate apartments offer one- and two-bedroom layouts, with commercial zoning for a business component.

    View details
    Duplex With Carport
    Duplex With Carport

    2402 College Ave, Belleville, IL 62221

    $165,000
    2 units  1,920 sqft  1 building

    One unit is occupied by a tenant, while the other allows for an owner-occupant arrangement.

    Carport  Decks
    View details
    2-Unit Duplex with Unfinished Basements
    2-Unit Duplex with Unfinished Basements

    905 N Church Street, Belleville, IL 62220

    $100,000
    2 units  2,208 sqft  1 building  2-story  Built 1903  Multi-tenant
    $823/mo avg rent

    Both residences have separate living areas, kitchens, and backyard access, with tenants in place.

    2 x 2BR/1BA
    View details
    Two-Unit Duplex with Basement Storage
    Two-Unit Duplex with Basement Storage

    124 N Virginia Ave, Belleville, IL 62220

    $160,000
    1,120 sqft  Built 1905

    Both residences include upper-level bedrooms and a main-floor half bath.

    View details
    Renovated Duplex Near Main Street
    Renovated Duplex Near Main Street

    29 N 14th St, Belleville, IL 62220

    $159,000
    2 units  1,122 sqft  1 building

    Two-unit residential property with one recently updated apartment available for occupancy.

    2 x 2BR/1BA
    View details
    Two-Unit Duplex with Off-Street Parking
    Two-Unit Duplex with Off-Street Parking

    517 Mascoutah Ave, Belleville, IL 62220

    $129,900
    2 units  1,813 sqft

    Two-bedroom units offer a practical residential income configuration.

    2 x 2BR/1BA  Off street parking
    View details
    2-Unit Duplex
    2-Unit Duplex

    11 Hi Pointe Drive, Belleville, IL 62223

    $125,000
    2 units  1,456 sqft  Built 1972

    Seller-owned appliances are included, and each residence has its own separate unit.

    View details
    Two-Unit Brick Duplex
    Two-Unit Brick Duplex

    609-611 E C St, Belleville, IL 62220

    $229,900
    2 units  2,820 sqft  1 building  2-story  Built 1877  brick
    $33,600 gross income

    Two matching residences combine updated kitchens, private basements, and separate garage parking.

    2 x 3BR/1BA  Private basement with laundry hookups  Covered back porch
    View details
    Two-Unit Duplex with Sunroom
    Two-Unit Duplex with Sunroom

    2000 W A Street, Belleville, IL 62226

    $159,000
    2 units  1,566 sqft  Built 1922  Multi-tenant
    Transit access

    Two distinct apartment layouts include a basement-access unit and a separate residence with newer HVAC.

    1 x 4BR/2BA  1 x 1BR/1BA
    View details
    Two-Story Duplex
    Two-Story Duplex

    2419 W Main St, Belleville, IL 62226

    $160,000
    2 units  2,870 sqft  1 building  2-story  Built 1900

    Each residence has three bedrooms and one full bathroom; one unit is occupied and the other is vacant.

    View details
    Two-Story Duplex
    Two-Story Duplex

    2415 W Main St, Belleville, IL 62226

    $160,000
    2 units  2,870 sqft  1 building  2-story  Built 1900

    Both residences have three bedrooms and one full bathroom, and are currently occupied.

    2 x 3BR/1BA
    View details
    Rehabilitated Duplex with Garage
    Rehabilitated Duplex with Garage

    314 W H St, Belleville, IL 62226

    $144,000
    2,610 sqft  Built 1953

    Two-unit property with varied bedroom layouts and rehabilitation completed in 2022.

    View details
    Two-Unit Duplex with Carports
    Two-Unit Duplex with Carports

    112 Kingsway Dr, Belleville, IL 62226

    $174,500
    2 units  2,032 sqft  Built 1980

    Each residence includes two bedrooms, one bathroom, and a dedicated covered parking space.

    2 spaces  2 x 2BR/1BA
    View details
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    O Fallon, IL Duplexes Market Trends and Statistics

    Explore 31 duplexes for sale in O Fallon, IL, showcased through 31 active listings on our real estate platform. These investment opportunities span a total of 50,672 square feet of properties for sale, with an estimated market value of $5,719,700.

    Sale prices for two-family homes in O Fallon, IL start at $39,900, averaging $197,231, and reaching up to $675,000 — 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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    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Duplexes 4
    Apartment buildings 1

    Demographics Overview

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

    High-Yield Neighborhoods for Investment

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

    Neighborhood Average Price
    62269 $537.5K

    Taxes & Financing

    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in St. Clair County

    New Delisted

    Total CRE Inventory on Market (SF)

    How Realmo verifies these figures

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    Browse Duplexes for Sale Near O Fallon, IL

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    Most Searched ZIP Codes in O Fallon, IL

    • 62220
    • 62221
    • 62226
    • 62269
    • 62223

    Featured O Fallon Real Estate Agencies

    Realmo connects you with licensed O Fallon CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    CR Holland Real Estate
    718 W Highway 50 Belleville, IL 62269
    Phone: (618) 416-7588
    www.CRHolland.com
    Kunkel Wittenauer Group
    784 Wall Street, Suite 150 Belleville, IL 62269
    Phone: (618) 632-8200
    choosekwg.com/
    Red Door Realty Group Inc
    1001 S Lincoln Ave Belleville, IL 62269
    Phone: (618) 632-9448
    www.RedDoorRG.com
    Why this one?
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