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Updated Brick Duplex
New
For Sale
$310,000

3425 Illinois Avenue St, Louis, MO 63118

Residential Income, St Louis, MO

Property Size2,292 SF
Lot Size0.07 Acres
Price / SF$135.25
Days on Market4

Property Features for 3425 Illinois Avenue St

General Information

Property type Residential Multi Family
Property subtype Other
Bedrooms 3
Bathrooms 2
Full bathrooms 2
Rooms Basement, Bedroom 2, Bedroom 3, Bathroom 2, Dining Room, Bathroom 1, Bedroom 1
Parking features On Street
Window features Double Pane Windows
Patio and Porch features Patio
Interior features Ceiling Fan(s), Dining/Living Room Combo, Historic Millwork, Laminate Counters, Pantry
Exterior features Permeable Paving
Fencing Gate
Basement Dirt Floor, Sump Pump, Unfinished, Interior Entry
Appliances Dishwasher, Microwave, Free-Standing Gas Range, Free-Standing Refrigerator, Washer/Dryer, Gas Water Heater
Subdivision Kaysers Add
Lot features Back Yard, City Lot, Level, Near Public Transit
Elementary school Monroe 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
Standard status Active
APN 1555-00-0280-0
Size 2,292 SF
Lot size 0.07 Acres

Taxes and HOA fees

Tax Year 2025
Tax Annual Amount 1985

Utilities

Heating system Forced Air, Natural Gas
Cooling system Electric, Central Air, Ceiling Fan(s)
Water source Public

Amenities

shared laundry
fenced backyard
brick paver patio
easy street parking

Building Details

Year built 1885
Floors in Building 3
Number of units 2
Flooring type Simulated wood, Tile - Ceramic
Building materials Brick, Stone
Roof type Tar/Gravel
Architectural style Victorian
Listing Agency: Worth Clark Realty
Listed By: Abbey Willen
Added: Aug 28 Changed: Aug 29 Last Checked: Aug 31 at 5:06AM
MLS# 26054536

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 Victorian duplex at 3425 Illinois Avenue contains 2,292 square feet across three stories. The first-floor unit includes one bedroom and one bathroom and is currently tenant occupied. The second unit spans the upper two floors, with two bedrooms positioned on separate levels and two living areas. Shared basement laundry, a sump pump, central air, forced-air heating, and a gas water heater support the property’s practical layout.

The 1885 brick residence retains exposed brick, original panel doors, transom windows, and substantial historic millwork alongside updates to the roof, HVAC, electrical, plumbing, and windows. A fenced backyard, brick paver patio, and on-street parking add usable outdoor and parking amenities. The property is near Cherokee Street’s Antique Row, three parks within four blocks, public transportation, and I-44 and I-55.

Key Highlights

  • 2,292‑square‑foot duplex on a 0.0706‑acre lot
  • Built in 1885 with Victorian architecture and brick construction
  • First‑floor 1‑bedroom, 1‑bath unit is currently tenant occupied

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
$24,510
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
7.91%
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%
$490,200 $490.2K
Cap Rate 7%
$350,143 $350.1K
Cap Rate 9%
$272,333 $272.3K
Market Conditions
NOI Build-Up for 2,292 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
$37.1K $16.20/SF
− Vacancy
−$2.1K −$0.92/SF
EGI
$35.0K $15.28/SF
− OpEx
−$10.5K −$4.58/SF
NOI
$24.5K $10.69/SF
Area
St. Louis County, MO
Vacancy
5.70%
Lease Rate
$16.20 /SF/Yr
Expense Ratio
30.00%
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%
$490,200
Cap Rate 7%
$350,143
Cap Rate 9%
$272,333

Alternative Uses

Best Use
Multifamily LT 5
$350.1K
$306.4K – $408.5K (±1% cap)
NOI $24,510 @ 7.0% cap · market cap 7.91%
Second Best
Apartment 5plus
$304.7K
$266.6K – $355.5K (±1% cap)
NOI $21,329 @ 7.0% cap · market cap 6.88%
Theoretical Best
Office A
$491.9K
$430.4K – $573.9K (±1% cap)
NOI $34,433 @ 7.0% cap · market cap 11.11%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Lease Details

2
Residential units
Yes
Highway access

Location Intelligence

Trade Area within ½ mile

1,235
Businesses Nearby

Demographics for 63118, MO

25,194
Population
14,770
Households
1.7
Avg Household Size
34
Median Age
38%
College-Educated
87%
High-School Grad
3.4 sq mi
ZIP Area
7,410
Density / Sq Mi
$57,268
Median Household Income
$44,717
Median Earnings
$952
Median Rent
$210,900
Median Home Value

Market

Vacancy Rate% for Multifamily in Midwest region

6.5% 2022
7.5% 2023
7.8% 2024
8% 2025
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Questions? Ask Rey
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Frequently Asked Questions

What type of property is this?
Duplex - Three-story property pairs an occupied one-bedroom unit with a spacious upper unit featuring two bedrooms and flexible living areas.
Where is this duplex located?
The property is located at 3425 Illinois Avenue St Louis, MO.
What is the asking price?
The asking price for this property is $310,000.
What are key features of this property?
This property features: 2,292‑square‑foot duplex on a 0.0706‑acre lot; Built in 1885 with Victorian architecture and brick construction; First‑floor 1‑bedroom, 1‑bath unit is currently tenant occupied
More about this property
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