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Two-Unit Duplex
New
For Sale
$185,000

1519 21St Avenue, Rockford, IL 61104

MULTIFAMILY, ROCKFORD, IL

Property Size1,500 SF
Price / SF$123.33
Days on Market1

Property Features for 1519 21St Avenue

General Information

Property type Residential Multi Family
Property subtype Other
Bedrooms 4
Bathrooms 2
Full bathrooms 2
Rooms Bedroom 1, Basement, Bathroom 2, Bedroom 4, Bedroom 3, Bedroom 2, Bathroom 1
Parking 2
Appliances Refrigerator, Stove/Cooktop
Elementary school District 205-RFD
Middle school District 205-RFD
High school District 205-RFD
Elementary school district Rockford 205
Middle school district Rockford 205
High school district Rockford 205
Subdivision Winnebago County
Standard status Active
APN 1136306011
Size 1,500 SF

Taxes and HOA fees

Tax Year 2025
Tax Description UNION PARK SUBD LOT 001 BLOCK 006
Tax Annual Amount 3217
Legal Description UNION PARK SUBD LOT 001 BLOCK 006

Utilities

Heating system Forced Air
Cooling system Central Air

Building Details

Year built 1960
Floors in Building 1
Number of units 2
Roof type Shingle
Listing Agency: Keller Williams Realty Signature
Listed By: Zile Huma · License #475129675
Added: Oct 6 Last Checked: Oct 6 at 11:06PM
MLS# 202606332

Copyright © 2026 NorthWest Illinois Alliance of REALTORS. 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 1,500-square-foot duplex, built in 1960, contains two residences, each arranged with two bedrooms, one full bathroom, and a living room. Forced-air heating and central air conditioning serve the property, which has a shingle roof and added attic insulation.

At 1519 21st Avenue in Rockford, the building has had several mechanical and roof updates. Both units received water heaters in ’18 and a roof replacement in ’15. Unit 1519 has a ’23 air conditioner and ’16 furnace; Unit 1521 has a ’25 air conditioner and ’11 furnace. The property includes a refrigerator and stove/cooktop.

Key Highlights

  • Two residences, each with 2 bedrooms, 1 full bath, and a living room
  • 1,500 square feet; built in 1960
  • Unit 1519: AC ’23, water heater ’18, furnace ’16, roof ’15

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$9,818
Cap Rate
5.31%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$196,360 $196.4K
Cap Rate 7%
$140,257 $140.3K
Cap Rate 9%
$109,089 $109.1K
Market Conditions
NOI Build-Up for 1,500 SF
Gross rent
$14.6K $9.72/SF
− Vacancy
−$554 −$0.37/SF
EGI
$14.0K $9.35/SF
− OpEx
−$4.2K −$2.81/SF
NOI
$9.8K $6.55/SF
Area
Rockford, IL
Vacancy
3.80%
Lease Rate
$9.72 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$196,360
Cap Rate 7%
$140,257
Cap Rate 9%
$109,089

Alternative Uses

Best Use
Multifamily LT 5
$140.3K
$122.7K – $163.6K (±1% cap)
NOI $9,818 @ 7.0% cap · market cap 5.31%
Second Best
Apartment 5plus
$122.2K
$106.9K – $142.6K (±1% cap)
NOI $8,554 @ 7.0% cap · market cap 4.62%
Theoretical Best
Office A
$399.0K
$349.1K – $465.5K (±1% cap)
NOI $27,929 @ 7.0% cap · market cap 15.10%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

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Current Use

Duplexes

Suggested Use

Top Pick Law Firm Dental Office Skin Care Clinic Gym & Fitness Center (Bike/Boat/Book/etc) Store Spa & Massage Center

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

622
Businesses Nearby

Demographics for 61104, IL

17,354
Population
9,253
Households
1.9
Avg Household Size
32
Median Age
9%
College-Educated
75%
High-School Grad
4.5 sq mi
ZIP Area
3,856
Density / Sq Mi
$32,161
Median Household Income
$26,277
Median Earnings
$854
Median Rent
$83,700
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
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Frequently Asked Questions

What type of property is this?
Duplex - Both residences include two bedrooms, a full bath, and a separate living room.
Where is this duplex located?
The property is located at 1519 21St Avenue Rockford, IL.
What is the asking price?
The asking price for this property is $185,000.
What are key features of this property?
This property features: Two residences, each with 2 bedrooms, 1 full bath, and a living room; 1,500 square feet; built in 1960; Unit 1519: AC ’23, water heater ’18, furnace ’16, roof ’15
More about this property
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