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4-Unit Brick Quadplex
New
For Sale
$425,000

6040 Southwest Avenue, Saint Louis, MO 63139

Residential Income, St Louis, MO

Property Size3,808 SF
Lot Size0.11 Acres
Price / SF$111.61
Days on Market5

Property Features for 6040 Southwest Avenue

General Information

Property type Residential Multi Family
Property subtype Other
Bedrooms 4
Bathrooms 4
Full bathrooms 4
Rooms Bathroom 2, Bedroom 4, Bedroom 3, Bathroom 1, Bathroom 4, Bedroom 1, Bathroom 3, Bedroom 2, Basement
Basement Unfinished
Subdivision Highland Park
Elementary school Mason Elem.
Middle school Long Middle Community Ed. Center
High school Roosevelt High
Elementary school district St. Louis City
Middle school district St. Louis City
High school district St. Louis City
Directions GPS friendly
Standard status Active
APN 5939-00-0030-0
Size 3,808 SF
Lot size 0.11 Acres

Additional Details

Tenant in Place Yes

Taxes and HOA fees

Tax Year 2025
Tax Annual Amount 3682

Utilities

Heating system Forced Air
Cooling system Central Air, Ceiling Fan(s), Window Unit(s), Wall/Window Unit(s)
Water source Public

Building Details

Year built 1925
Floors in Building 2
Number of units 4
Building materials Brick
Architectural style Other
Buildings 1
Listing Agency: RE/MAX Results · RE/MAX International
Listed By: Kim Cameron · License #2003019788
Added: Oct 26 Changed: Oct 28 Last Checked: Oct 30 at 8:06AM
MLS# 26067052

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.

Rey
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Investment Insights

Based on property information with market context.

This 3,808-square-foot brick quadplex was built in 1925 and contains four apartments. Three units are rented, and the fourth is vacant for showings. Recent work includes a TPO roof installed in July 2024, updated electrical panels, and renovations to both second-floor apartments within the past year. Interior features include hardwood and LVP flooring; the photographed apartment also has updated kitchen and bathroom finishes.

A full basement provides laundry hookups and private storage for each apartment. The property occupies a 0.1102-acre lot and has forced-air heating. Cooling features listed for the building include central air, ceiling fans, and wall/window units.

Key Highlights

  • Four apartments; three currently rented and one vacant for showings
  • 3,808 square feet on a 0.1102‑acre lot
  • TPO roof installed July 2024; electrical panels updated

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$35,437
Cap Rate
8.34%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$708,740 $708.7K
Cap Rate 7%
$506,243 $506.2K
Cap Rate 9%
$393,744 $393.7K
Market Conditions
NOI Build-Up for 3,808 SF
Gross rent
$68.5K $18.00/SF
− Vacancy
−$4.1K −$1.08/SF
EGI
$64.4K $16.92/SF
− OpEx
−$29.0K −$7.61/SF
NOI
$35.4K $9.31/SF
Area
St. Louis County, MO
Vacancy
6.00%
Lease Rate
$18.00 /SF/Yr
Expense Ratio
45.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$708,740
Cap Rate 7%
$506,243
Cap Rate 9%
$393,744

Alternative Uses

Best Use
Multifamily LT 5
$581.7K
$509.0K – $678.7K (±1% cap)
NOI $40,721 @ 7.0% cap · market cap 9.58%
Second Best
Apartment 5plus
$506.2K
$443.0K – $590.6K (±1% cap)
NOI $35,437 @ 7.0% cap · market cap 8.34%
Theoretical Best
Office A
$817.3K
$715.1K – $953.5K (±1% cap)
NOI $57,208 @ 7.0% cap · market cap 13.46%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

Who owns this building? See the owner, sales and loan history
Open Analytics

Lease Details

4
Residential units
Multi-tenant
Tenancy

Location Intelligence

Trade Area within ½ mile

614
Businesses Nearby

Demographics for 63139, MO

21,971
Population
12,187
Households
1.8
Avg Household Size
38
Median Age
49%
College-Educated
96%
High-School Grad
3.8 sq mi
ZIP Area
5,782
Density / Sq Mi
$74,749
Median Household Income
$52,298
Median Earnings
$1,086
Median Rent
$199,400
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in Midwest region

6.5% 2022
7.5% 2023
7.8% 2024
8% 2025

Frequently Asked Questions

What type of property is this?
Quadplex - Three apartments are occupied, with the remaining unit vacant for prospective showings.
Where is this quadplex located?
The property is located at 6040 Southwest Avenue Saint Louis, MO.
What is the asking price?
The asking price for this property is $425,000.
What are key features of this property?
This property features: Four apartments; three currently rented and one vacant for showings; 3,808 square feet on a 0.1102‑acre lot; TPO roof installed July 2024; electrical panels updated
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