4136 N 21st St, Milwaukee, WI 53209 - Photo 1

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$174,900

For Sale
Active
Duplex
2 Car Garage

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Property Description

Why rent when you can own, build equity, and create income? This 2/2 duplex offers flexibility for an owner-occupant, multi-generational household, business-minded buyer, or investor. Live in one unit while rental income helps offset expenses, or lease both units and grow your portfolio. The upper unit has been freshly painted and features updated flooring, while the first floor is occupied by a long-term tenant. A fenced backyard, two-car garage with concrete slab, and location just minutes from I-43 add everyday convenience and value.

Full Property Details

Full Property Details for 4136 N 21st St

General

Price: $174,900
Taxes: $2,692 (2025)
Status: Active
Type: Duplex
Source: MetroMLS_Milwaukee_Wirex
MLS ID: 1974569
Updated: 8/5/2026
Added to Site: 24 day(s) ago

Parking

Garage: Yes
Garage Spaces: 2
Parking Features: Alley Entrance, Parking Space

Location

County: Milwaukee
Driving Directions: Please Use GPS

School Information

School District: Milwaukee

Utilities

Water/Sewer: Municipal Sewer, Municipal Water

Structural Information

Architectural Style: Duplex/2 Story
Exterior Const.: Vinyl
Basement Desc.: Full
Year Built: 1928

Unit Information

Unit 1

Square Feet: 1963
Bathroom Features: Full Bath on Lower Level, Shower over Tub
Bedrooms: 2

Unit 2

Bathroom Features: Full Bath on Upper Level , Shower over Tub
Bedrooms: 2

Lot Features

Lot Size (Acres): 0.11
Zoning: RT2

Financial Considerations

Tax Amount: $2,692.54
Tax Year: 2025

Buyer's Brokerage Compensation: Contact Listing Agent

Not binding unless confirmed by separate agreement among applicable parties.

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Meet the listing agent

— 4136 N 21st St —

Angel Allen

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(414) 759-0987 mobile

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Schools

Schools serving 4136 N 21st St

School District:Milwaukee School District

Name	Grades	Distance
Franklin School, Milwaukee, WI 2308 West Nash Street, Milwaukee, WI 53206	PK-8	0.5 mi
Lloyd Barbee Montessori School 4456 North Teutonia Avenue, Milwaukee, WI 53209	PK-6	0.5 mi
La Escuela Fratney 3255 North Fratney Street, Milwaukee, WI 53212	PK-5	2.1 mi
Rufus King International Middle School 121 East Hadley Street, Milwaukee, WI 53212	6-8	2.1 mi
Roosevelt Middle School of the Arts 800 West Walnut Street, Milwaukee, WI 53205	6-8	2.8 mi
Lincoln Center of the Arts 820 East Knapp Street, Milwaukee, WI 53202	6-8	3.6 mi
Rufus King International High School 1801 West Olive Street, Milwaukee, WI 53209	9-12	0.2 mi
Milwaukee High School of the Arts 2300 West Highland Avenue, Milwaukee, WI 53233	9-12	3.3 mi
Bradley Technology & Trade High School 700 South 4th Street, Milwaukee, WI 53204	9-12	4.8 mi

Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 4136 N 21st St Get Price Alerts and Save Property

Date

Details

Price

Change

Source

8/04/2026

Listed

$174,900

761.58%

MLS

3/28/2018

Sold

$20,300

—

Public Record

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Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History

Tax History for 4136 N 21st St

Year

Property Taxes

Change

Tax Assessment

Change

2024

$4,215

—

$133,600

2024

$4,215

-6%

$128,900

46%

2023

$4,464

113%

$88,100

—

2022

$2,098

-39%

$88,100

2021

$3,416

89%

$86,400

29%

2019

$1,805

-48%

$66,900

—

2018

$3,459

-48%

$66,900

—

2017

$6,714

52%

$66,900

2016

$4,418

62%

$61,300

-5%

2014

$2,725

-8%

$64,200

-12%

2013

$2,974

-3%

$72,900

-22%

2012

$3,062

—

$93,600

—

View All

Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost

Estimate the Cost for 4136 N 21st St

4136 N 21st St, Milwaukee, WI 53209 (MLS# 1974569) is a Duplex property with 0 bedrooms and 0 full bathrooms. 4136 N 21st St is currently listed for $174,900 and was received on August 04, 2026. This property is listed by Angel Allen from our Milwaukee Office.Want to learn more about 4136 N 21st St? Do you have questions about finding other Duplex real estate for sale in Milwaukee? You can browse all Milwaukee real estate or contact a Coldwell Banker agent to request more information.

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4136 N 21st St Milwaukee, WI 53209