Two-Unit Duplex
911 S Walnut Street O Fallon, IL 62269
911 S Walnut Street, O Fallon, IL, 62269
$265,000
For Sale
Under Contract
$265,000
MULTI_FAMILY - O'Fallon, IL
Property Size2,093 SF
Lot Size0.35 Acres
Price / SF$126.61
Days on Market28
Property Features for 911 S Walnut Street
General Information
- Property type
- Residential Multi Family
- Property subtype
- Other
- Standard status
- Active Under Contract
- APN
- 04-31.0-217-005
- Size
- 2,093 SF
- Lot size
- 0.35 Acres
Taxes and HOA fees
- Tax Year
- 2024
- Tax Annual Amount
- 4478
Utilities
- Cooling system
- Central Air
Building Details
- Year built
- 1983
Listing agency
Landmark Realty
(618) 466-1513
Listed by
Matt Horn · License #471003243
(618) 466-1513
Added: Jun 26 Updated: Jul 22 at 7:36PM Checked: Jul 23 at 11:06AM
MLS# 26037838
Copyright © 2026 Mid America Regional Information Systems, Inc. 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.
This income-producing duplex offers two separate units, each featuring 2 bedrooms and 1 bathroom. Both sides are currently occupied, providing an immediately tenanted setup. The property is described as well maintained.
The duplex is located at 911 S Walnut Street in O’Fallon, Illinois (St. Clair County), within the 62269 ZIP code.
With a total property size listed at 2,093 square feet and a lot size of 0.35 acres, the configuration supports a straightforward two-unit residential income use.
The duplex is located at 911 S Walnut Street in O’Fallon, Illinois (St. Clair County), within the 62269 ZIP code.
With a total property size listed at 2,093 square feet and a lot size of 0.35 acres, the configuration supports a straightforward two-unit residential income use.
Key Highlights
- Duplex income‑producing property with 2 units (2 Bed / 1 Bath each).
- Both sides are currently occupied.
- Central air cooling.
Local Financial Insights For Multifamily LT 5
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 | $26.4k | $12.60 |
| − Vacancy | −$1.7k | −$0.82 |
| EGI | $24.7k | $11.78 |
| − OpEx | −$7.4k | −$3.53 |
| NOI | $17.3k | $8.25 |
2,093 SF · lease $12.60/SF/yr · vacancy 6.50% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$246.6K
$215.8K – $287.7K
NOI $17,260 @ 7.0% cap · market cap 6.51%
Second Best
Apartment 5plus
$222.1K
$194.4K – $259.2K
NOI $15,549 @ 7.0% cap · market cap 5.87%
Theoretical Best
Office A
$495.5K
$433.6K – $578.1K
NOI $34,684 @ 7.0% cap · market cap 13.09%
Zoning and permitted uses should be independently verified with local authorities.
Property Analytics
Property Profile
Location Intelligence
Current Use by Public Records
Duplexes
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FAQs
What type of property is this?
Duplex - Well maintained duplex with two 2-bedroom, 1-bath units, currently both occupied.
Where is this duplex located?
The property is located at 911 S Walnut Street O Fallon, IL.
What is the asking price?
The asking price for this property is $265,000.
What are key features of this property?
This property features: Duplex income‑producing property with 2 units (2 Bed / 1 Bath each).; Both sides are currently occupied.; Central air cooling.
