521 N Walnut St

3
Baths
3,142 Sq. Ft.
$76 / Sq. Ft.
3,142
Sq. Ft.
$76
per Sq. Ft.

Description

Beautifully Updated Triplex in the Heart of Byron, IL — Strong Income & Turnkey Condition Discover an exceptional investment opportunity in Byron, Illinois with this nicely redone 3-unit triplex, perfect for both seasoned investors and owner-occupants. This well-maintained property offers immediate cash flow with a monthly rental income of $2,650, plus the option to live in one unit while the other two help cover your mortgage. Major updates provide peace of mind, including a newer roof (3 years...Beautifully Updated Triplex in the Heart of Byron, IL — Strong Income & Turnkey Condition Discover an exceptional investment opportunity in Byron, Illinois with this nicely redone 3-unit triplex, perfect for both seasoned investors and owner-occupants. This well-maintained property offers immediate cash flow with a monthly rental income of $2,650, plus the option to live in one unit while the other two help cover your mortgage. Major updates provide peace of mind, including a newer roof (3 years old), central air conditioning unit (3 years old), and a recently rebuilt exterior stairwell (4 months old). Inside, each unit has been thoughtfully refreshed, making the property appealing to tenants and ready for long-term stability. Two units are secured with leases through July 2026, while the third is on a month-to-month lease—offering excellent flexibility for a potential owner-occupant. Tenants are responsible for all utilities except water and trash, keeping operating expenses low. Located in desirable Byron, IL, this property benefits from a welcoming community, strong rental demand, and convenient access to local amenities. Whether you're expanding your portfolio or looking for a smart way to live affordably, this Byron triplex is an outstanding opportunity.
  1. Listed by Thomas Holder • Black Castle Properties
    P: (815)-708-0141 C: (815)-222-3403 tom@blackcastleprop.com

Property Details for 521 North Walnut Street

Style
2 Story
Total # of Parking Spaces
6
LISTING UPDATED: 01/07/2026 09:51 AM

Property Details for 521 North Walnut Street

StatusSold & Closed
MLS #202507163
Days on Market7
Taxes$4,456 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeMulti Family
MLS TypeTwo to Four Units / 3 - 4 Units
Year Built1922
Lot Size-
CountyOgle County

Location

Listing Courtesy of Black Castle Properties

Sold By Re/Max Property Source

Add your commute

Building Information for 521 North Walnut Street

Stories2Residences3Year Built1922Building Size-Lot Size-

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$1,536 per month

30 year fixed, 6.11% Interest

Principal and Interest

$1,165

Property Taxes

$371

HOA Dues

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Property Information for 521 North Walnut Street

Summary
Location and General Information
  • City: BYRON
  • State: IL
  • Zip: 61010
  • Address: 521 N Walnut Street
  • County: Ogle County
  • Zip Code: 61010
  • Year Built: 1922
  • School District: Byron 226
  • Elementary School 1: Mary Morgan Elementary
  • Middle School: Byron Middle
  • High School: Byron High School 9-12
  • Township: Byron
Property
Lot Information
  • Property Type: Two to Four Units
  • Est Below Grade Fin SqFt: 0
  • Est Total Finished Sq. Ft.: 3142
  • Est Above Grade SqFt: 3142
Property and Assessments
  • Class: MULTIFAMILY
  • Type: 3 - 4 Units
  • Status: SOLD & CLOSED
  • PIN: 0529355002
  • HUD: No
Utilities
  • Water: City
  • Sewer: City
  • Electric: Circuit Breaker
  • Separate Utilities: Yes
  • Separate Electric Y/N: Yes
  • Separate Water Y/N: No
Interior and Exterior Features
Exterior Features
  • Exterior: Aluminum, Concrete Block
  • General Features: Additional Parking, Laundry in Unit, Main Floor Primary
  • Roof: Shingle
Interior Features
  • Basement Type: Crawl Space, Daylight
  • Water Heater: Gas
  • Heating: Forced Air, Natural Gas
  • Cooling: Central Air, Window Unit
  • Appl Stay/Incl: Dryer, Refrigerator, Stove/Cooktop, Oven, Washer
  • Basement Y/N: Yes
  • Separate Heat Y/N: Yes
  • Washer/Dryer CoinOp Y/N: No
  • Washer/Dryer Hookup Y/N: Yes
  • Washer/Dryer Y/N: Yes
Multi Family
Income and Expenses
  • Insurance/YR: $1,800
  • Maintenance/YR: $500
  • Management/YR: $0
  • Utilities/YR: $1,776
  • Legal/Account/YR: 0
  • Other/YR: 0
  • Potential Annual Income: $31,800
  • Potential Annual Expenses: 4076
Multi Family Information
  • Number of Floors in Bldg: 2
  • Number of Tenants in Bldg: 3
  • Number of Units: 3
Unit 1
  • Unit 1 Range: Yes
  • Unit 1 Garage Capacity: 2
  • Unit 1 # Beds: 2
  • Unit 1 AC: Y
  • Unit 1 Refrigerator: Yes
  • Unit 1 # Rooms: 7
  • Unit 1 # Baths: 1
  • Unit 1 Heat: Gas
  • Unit 1 SqFt: 1200
  • Unit 1 Lease/Deposit: 1050
  • Unit 1 Rent: 1050
Unit 2
  • Unit 2 Range: Yes
  • Unit 2 Garage Capacity: 0
  • Unit 2 # Beds: 2
  • Unit 2 AC: Y
  • Unit 2 Refrigerator: Yes
  • Unit 2 # Rooms: 6
  • Unit 2 # Baths: 1
  • Unit 2 Heat: Gas
  • Unit 2 SqFt: 1000
  • Unit 2 Lease/Deposit: 950
  • Unit 2 Rent: 950
Unit 3
  • Unit 3 Range: Yes
  • Unit 3 Garage Capacity: 0
  • Unit 3 # Beds: 2
  • Unit 3 AC: Y
  • Unit 3 Refrigerator: Yes
  • Unit 3 # Rooms: 5
  • Unit 3 # Baths: 1
  • Unit 3 Heat: Gas
  • Unit 3 SqFt: 625
  • Unit 3 Lease/Deposit: 400
  • Unit 3 Rent: 650
Rental
Rent Information
  • Lease: No

Property History for 521 North Walnut Street

DateEvent & SourcePriceAppreciation
Jan 6, 2026

Sold (Public Record)

Public Record #1926945999

$240,000

+13.5% / yr

Jan 6, 2026

Sold

MRED #12519704

$240,000
Jan 5, 2026

Sold

NorthWest Illinois Alliance of REALTORS® #202507163

$240,000
Nov 25, 2025

Pending

MRED #12519704

Nov 24, 2025

Pending

NorthWest Illinois Alliance of REALTORS® #202507163

Nov 18, 2025

Listed (Active)

MRED #12519704

$249,900
Nov 17, 2025

Listed (Active)

NorthWest Illinois Alliance of REALTORS® #202507163

$249,900
Jun 16, 2021

Sold (Public Record)

Public Record #1465964908

$135,000
Jun 15, 2021

Sold

NorthWest Illinois Alliance of REALTORS® #202101007

$135,000
Jun 15, 2021

Pending

NorthWest Illinois Alliance of REALTORS® #202101007

Mar 24, 2021

Listed (Active)

NorthWest Illinois Alliance of REALTORS® #202101007

$135,000
DateEvent & SourcePrice
01/06/2026

Sold (Public Record)

Public Record #1926945999

$240,000

+13.5% / yr

01/06/2026

Sold

MRED #12519704

$240,000
01/05/2026

Sold

NorthWest Illinois Alliance of REALTORS® #202507163

$240,000
11/25/2025

Pending

MRED #12519704

11/24/2025

Pending

NorthWest Illinois Alliance of REALTORS® #202507163

11/18/2025

Listed (Active)

MRED #12519704

$249,900
11/17/2025

Listed (Active)

NorthWest Illinois Alliance of REALTORS® #202507163

$249,900
06/16/2021

Sold (Public Record)

Public Record #1465964908

$135,000
06/15/2021

Sold

NorthWest Illinois Alliance of REALTORS® #202101007

$135,000
06/15/2021

Pending

NorthWest Illinois Alliance of REALTORS® #202101007

03/24/2021

Listed (Active)

NorthWest Illinois Alliance of REALTORS® #202101007

$135,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 521 North Walnut Street

Taxable ValueLand$4,767Additions$47,500Total$52,267
Tax Record2024$4,456 ($371 / month)
Home Facts
Beds0Total Finished SqFt3,142 SqFtAbove Grade Finished SqFt3,142 SqFtStories2Lot Size8,190 SqFtStyleSingle Family ResidenceCountyOGLEAPN05-29-355-002

Schools near 521 North Walnut Street

This home is within Byron Community Unit School District 226.
Rating
School
Type
Grades
Distance
Public - PK to 5
Public - 6 to 8
Public - 9 to 12
Rating
School
Distance
Mary Morgan Elementary School
PublicPK to 5

Byron Middle School
Public6 to 8

Byron High School 9-12
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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Listing Courtesy of Black Castle Properties

Based on information from one of the following Multiple Listing Services: Midwest Real Estate Data LLC (\"MRED\"), MRED PLN GRID, Northwest Indiana REALTORS® Association and NorthWest Illinois Alliance of REALTORS. Information being provided is for the visitor’s personal, noncommercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. The data contained herein is copyrighted by Midwest Real Estate Data LLC (\"MRED\"), MRED PLN GRID, Northwest Indiana REALTORS® Association and NorthWest Illinois Alliance of REALTORS is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited. Property information referenced on this web site comes from the Internet Data Exchange (IDX) program of the MLS. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. For the avoidance of doubt, the accuracy of all information, regardless of source, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals. Properties displayed may be listed or sold by various participants in the MLS. Based on information submitted to the MLS GRID as of 01/07/2026 09:51 AM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.