4-Unit Brick
New
For Sale
$359,900
5018 Mardel Avenue, Saint Louis, MO 63109
Residential Income, St Louis, MO
Property Size3,404 SF
Lot Size0.12 Acres
Price / SF$105.73
Days on Market6
Property Features for 5018 Mardel Avenue
General Information
Property type
Residential Multi Family
Property subtype
Other
Rooms
Basement
Parking features
Alley
Basement
Unfinished, Full
Subdivision
Northampton Add
Elementary school
Buder 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
Special listing conditions
Real Estate Owned, In Foreclosure
Standard status
Active
APN
6033-00-0150-0
Size
3,404 SF
Lot size
0.12 Acres
Taxes and HOA fees
Tax Year
2025
Tax Annual Amount
4144
Utilities
Cooling system
Window Unit(s)
Building Details
Year built
1926
Building materials
Brick
Architectural style
Other
Listing Agency:
The Hermann London Group LLC
(314) 802-0797
Listed By:
Stephanie Hogenmiller · License #2010033084
(314) 566-5555
Added: Sep 28
Changed: Sep 29
Last Checked: Oct 3 at 12:06AM
MLS# 26054888
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.
Built in 1926, this 3,404-square-foot brick quadplex contains four one-bedroom apartments. Basement access and a detached garage are among the property’s existing features. The building is being offered in its current condition, and utilities are not on.
The property occupies a 0.1157-acre lot at 5018 Mardel Avenue in St. Louis. Alley access is noted for parking.
The property occupies a 0.1157-acre lot at 5018 Mardel Avenue in St. Louis. Alley access is noted for parking.
Key Highlights
- Four one‑bedroom units in a 3,404‑square‑foot building
- Brick construction; built in 1926
- Detached garage and basement access
Financial Insights
Estimated NOI and Cap Rate
NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$31,678
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
8.80%
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$633,560
$633.6K
Cap Rate 7%
$452,543
$452.5K
Cap Rate 9%
$351,978
$352.0K
Market Conditions
NOI Build-Up for 3,404 SF
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.
Gross rent
$61.3K $18.00/SF
− Vacancy
−$3.7K −$1.08/SF
EGI
$57.6K $16.92/SF
− OpEx
−$25.9K −$7.61/SF
NOI
$31.7K $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 rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$633,560
Cap Rate 7%
$452,543
Cap Rate 9%
$351,978
Alternative Uses
Best Use
Multifamily LT 5
$520.0K
$455.0K – $606.7K
NOI $36,401 @ 7.0% cap · market cap 10.11%
Second Best
Apartment 5plus
$452.5K
$396.0K – $528.0K
NOI $31,678 @ 7.0% cap · market cap 8.80%
Theoretical Best
Office A
$730.6K
$639.2K – $852.3K
NOI $51,139 @ 7.0% cap · market cap 14.21%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Open Analytics
Current Use
Lease Details
4
Residential units
Location Intelligence
Trade Area within ½ mile
717
Businesses Nearby
Explore this area
Business Placement
Demographics for 63109, MO
26,777
Population
14,963
Households
1.8
Avg Household Size
39
Median Age
52%
College-Educated
96%
High-School Grad
3.5 sq mi
ZIP Area
7,651
Density / Sq Mi
$71,563
Median Household Income
$52,245
Median Earnings
$929
Median Rent
$244,900
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
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Market
Vacancy Rate% for Multifamily in Midwest region
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Frequently Asked Questions
What type of property is this?
Quadplex - Four one-bedroom apartments include basement access, with a detached garage on site.
Where is this quadplex located?
The property is located at 5018 Mardel Avenue Saint Louis, MO.
What is the asking price?
The asking price for this property is $359,900.
What are key features of this property?
This property features: Four one‑bedroom units in a 3,404‑square‑foot building; Brick construction; built in 1926; Detached garage and basement access
