100 Mascoutah Avenue, Belleville, IL 62220

• 3 beds |
• 4 baths |
• 2,288 sqft

Property Description

A truly one-of-a-kind opportunity in the heart of Downtown Belleville! This remarkable mixed-use property seamlessly blends commercial functionality with an exceptionally well-preserved 1970s architectural masterpiece. Whether you're looking for a live/work environment, investment property, boutique office, creative studio, or a space with endless redevelopment potential, this building offers possibilities that are nearly impossible to duplicate. The main level features professional commercial office space with outstanding street presence, while the lower level provides abundant storage, a two-car garage, and a unique dumbwaiter designed to transport groceries and other items directly to the second-floor living quarters. Above it all is an extraordinary private residence that feels like stepping back into the golden age of modern design. The second floor offers 3 bedrooms, 2 bathrooms, dramatic open living spaces, an iconic floating staircase, a private spiral staircase, and countless original architectural details that have been beautifully preserved. Every room celebrates the bold design elements that made 1970s contemporary architecture so distinctive. One of the home's most captivating features is the expansive private courtyard and patio overlooking Downtown Belleville. Whether enjoying your morning coffee, entertaining guests, or taking in an evening concert from the city below, the panoramic views create an unforgettable setting unlike anything else in the area. From its timeless architecture and unique design features to its unmatched flexibility and downtown location, this is more than just a property -it's a landmark waiting for its next chapter. Properties of this caliber and character rarely become available. Schedule your private tour and experience this architectural gem for yourself. (58 spaces for public parking are located directly across Mascoutah Ave)

Listing Status:

Active

Date Added:

July 17, 2026

Data Last Updated:

August 12, 2026 at 12:19AM

Listing Office:

RE/MAX Preferred : 618-624-2111

MLS ID:

26045642

Interior

• Appliances: DishwasherDisposalMicrowaveRange HoodElectric RangeFree-Standing RefrigeratorGas Water Heater
• Basement: 8 ft + Pour
• Flooring: CarpetConcreteVinyl
• A/C: Central Air
• Heating: Natural Gas

Exterior

• Style: Contemporary
• Other Structures: Patio
• Parking: BasementGarage Door OpenerParking spaces: 10

Construction

• Roofing: Flat
• General: BrickConcreteFrameStuccoTwoConcrete Perimeter

Location

• Road/Access: City Street
• Originating MLS: maris2
• School District: Belleville DIST 118
• County: St. Clair

Lot

• Zoning: KOERNERS ADD A02838752 A0283920608-22.0-348-086
• View: City Lights

Utilities

• Utilities: Electricity ConnectedNatural Gas ConnectedPhone ConnectedSewer ConnectedWater Connected220 VoltsAmeren
• Water: Public
• Sewer: Public Sewer

Financial

• Source: maris2
• Ownership: Private