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    St Clair County, IL Office Buildings for Sale

    15 results
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    Downtown Belleville Office Building
    $350,000
    8,744 SF

    Downtown Belleville Office Building

    12 W Lincoln St, Belleville, IL 62220

    Office building in a prime downtown location near courthouse.

    • Prime downtown location, just one block from the St. Clair County Courthouse.
    • Private parking lot with over 15 spaces, a rare amenity in downtown Belleville.
    • 8,500+ square foot building suitable for various business needs.
    • Layout designed for professional use with numerous private offices, spacious meeting rooms, and versatile work areas.
    • Heating: Electric, Forced Air, Natural Gas. Cooling: Central Air, Electric.
    Updated: Dec 30, 2025
    View details
    Fairview Heights Retail Opportunity
    $225,000
    1,257 SF

    Fairview Heights Retail Opportunity

    5105 N Illinois St, Fairview Heights, IL 62208

    Retail property in high-traffic area near major retailers.

    • High traffic location with 27,200 vehicles per day.
    • Excellent visibility with 146' of frontage on North Illinois Street (IL Rte. 159).
    • Located in close proximity to medical facilities, major retailers, restaurants & hospitality.
    • 1,257 SF office building on a 0.60 acre lot.
    • Central air conditioning.
    Updated: Nov 14, 2025
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    Updated Commercial Building in Swansea
    $585,000
    6,300 SF

    Updated Commercial Building in Swansea

    Updated commercial building with new systems and flexible layout.

    16 Bronze Pointe Blvd, Swansea, IL 62226
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    Church and Office Redevelopment Opportunity
    $495,000
    2,898 SF

    Church and Office Redevelopment Opportunity

    Church and office building on two parcels, ideal for redevelopment.

    1340 N 58Th St, East St Louis, IL 62204
    View details
    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 62221
    View details
    Professional Office Building For Sale
    $395,000
    3,400 SF

    Professional Office Building For Sale

    3,486 SF office building with excellent parking and access.

    2 Bronze Pointe S, Swansea, IL 62226
    View details
    Downtown Belleville Mixed-Use Opportunity
    $675,000
    15,810 SF

    Downtown Belleville Mixed-Use Opportunity

    Mixed-use building in downtown Belleville near courthouse and town square.

    108 E Main St, Belleville, IL 62220
    View details
    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 62221
    View details
    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 62220
    View details
    Single-Tenant Office Building Near SAFB
    $1,430,000
    8,960 SF

    Single-Tenant Office Building Near SAFB

    8,960 SF office building leased through 2030 near SAFB.

    5050 Old Collinsville Rd, Swansea, IL 62226
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    Leased Office Building Investment
    $260,000
    1,716 SF

    Leased Office Building Investment

    Fully leased office building in high-traffic Fairview Heights location.

    5403 N Illinois St, Fairview Heights, IL 62232
    View details
    Belleville Office Building For Sale
    $399,000
    40,896 SF

    Belleville Office Building For Sale

    40,896 sq ft office building on 4.09 acres.

    29 N 64Th St, Belleville, IL 62223
    View details
    Well-Maintained Office Building For Sale
    $189,000
    4,320 SF

    Well-Maintained Office Building For Sale

    5,772 SF office building in high-traffic office park.

    2810 Frank Scott Pkwy W, Belleville, IL 62223
    View details
    Downtown Belleville Office/Retail Building
    $275,000
    3,591 SF

    Downtown Belleville Office/Retail Building

    Two-story office/retail building with parking and vacant lot.

    404 E Main St, Belleville, IL 62220
    View details
    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 St, Belleville, IL 62225
    View details
    Based on your search, we've compiled 74 Potential Opportunities for your consideration. Besides 15 Active listings in St Clair County, IL, we suggest exploring several alternatives: similar 57 Off-Market properties to explore as potential leads, plus 2 Land Listings that present a potential for development.

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Downtown Belleville Office Building
    $350,000
    8,744 SF

    Downtown Belleville Office Building

    Office building in a prime downtown location near courthouse.

    12 W Lincoln St, Belleville, IL 62220
    View details
    Downtown Freeburg Commercial Opportunity
    $169,900
    1,524 SF

    Downtown Freeburg Commercial Opportunity

    Well-maintained commercial building in high-traffic location with rental income.

    105 S State St, Freeburg, IL 62243
    View details

    Explore Off-Market Properties in St Clair County, IL

    Consider similar Off-Market properties in St Clair County, IL. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    21 Collinsville Ave

    21 Collinsville Ave

    OFFICE BUILDING • 0.05 Acres
    Value Estimation
    $250,000
    21 Collinsville Ave, East Saint Louis, IL 62201
    View details
    729 Insight Ave

    729 Insight Ave

    OFFICE BUILDING • 0.15 Acres
    Value Estimation
    $290,000
    729 Insight Ave, O Fallon, IL 62269-2156
    View details
    25 Main St

    25 Main St

    OFFICE BUILDING • 0.08 Acres
    Value Estimation
    $235,000
    25 Main St, Mascoutah, IL 62258
    View details
    23 Main St

    23 Main St

    OFFICE BUILDING • 0.04 Acres
    Value Estimation
    $235,000
    23 Main St, Mascoutah, IL 62258
    View details
    19 Collinsville Ave

    19 Collinsville Ave

    OFFICE BUILDING • 0.04 Acres
    Value Estimation
    $250,000
    19 Collinsville Ave, East Saint Louis, IL 62201
    View details
    10 Railway St

    10 Railway St

    OFFICE BUILDING • 0.06 Acres
    Value Estimation
    $250,000
    10 Railway St, Mascoutah, IL 62258-2034
    View details
    3 Saint Elizabeth Blvd

    3 Saint Elizabeth Blvd

    OFFICE BUILDING • 0.99 Acres
    Value Estimation
    $480,000
    3 Saint Elizabeth Blvd, O Fallon, IL 62269-1281
    View details
    10 Railway St

    10 Railway St

    OFFICE BUILDING • 0.17 Acres
    Value Estimation
    $245,000
    10 Railway St, Mascoutah, IL 62258-2034
    View details
    222 Main St, Unit 3

    222 Main St, Unit 3

    OFFICE BUILDING
    Value Estimation by Request
    222 Main St, Belleville, IL 62220-1608
    View details

    St Clair County, IL Office Buildings Investment Opportunities Market Analysis

    Explore 72 office buildings for sale in St Clair County, IL, showcased through 15 active listings on our real estate platform. These investment opportunities span a total of 1,135,174 square feet of properties for sale, with an estimated market value of $7,670,000.

    Prices for office properties in St Clair County, IL start at $140,000, averaging $333,478, and reaching up to $585,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you have the most current data.

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