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$399,900
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Property Description
Welcome to this beautifully renovated GREYSTONE 2-unit property offering incredible income potential and future upside. This oversized building features a massive duplex-down first unit with 5 bedrooms and 2 bathrooms, along with a spacious 4 bedroom, 1 bathroom second-floor unit-ideal for maximizing rental income. The property has been thoughtfully updated with modern finishes throughout, making it truly turnkey for an investor or house hacker looking to generate strong cash flow from day one. What sets this property apart is the significant value-add opportunity: the expansive lower level provides the potential to be converted into an additional unit, allowing a buyer to create a 3-unit building and substantially increase rental income. With the right vision, this property can easily produce $5,000+ per month in rental income. Perfect for: Investors seeking strong returns House hackers looking to cover their mortgage Buyers looking for a property with forced appreciation potential Conveniently located with access to public transportation, major roadways, and neighborhood amenities. Don't miss this rare opportunity to own a high-upside asset with immediate income and future scalability.
Full Property Details
Full Property Details for 6640 S Union Ave
General
- Price: $399,900
- Taxes: (2024)
- Status: Active
- Type: Multi-Family
- Source: MRED
- MLS ID: 12590192
- Updated: 3/26/2026
- Added to Site: 20 day(s) ago
Interior
- Basement: Finished, F
Rooms
Bathrooms
- Total Bathrooms: 3
- Upper - Full Baths: 3
Bedrooms
- Total Bedrooms: 9
Parking
- Total Spaces: 2
- Parking Features: Yes
Location
- Area: CHI - Englewood
- County: Cook
- Township: Lake
- Driving Directions: 67th E of Halsted to Union N to Address
School Information
- School District: 299
- Elem School District: 299
- Midd School District: 299
- High School District: 299
Heating & Cooling
- Heating Type: Natural Gas
Utilities
- Sewer: Public Sewer
- Water: Lake Michigan
Structural Information
- Construction: Brick
- Exterior Const.: Brick
- Basement: Yes
- Basement Desc.: Finished, Full
- Year Built: 1900
- Built Before 1978: Yes
- Remodeled/Updated: 2026
Unit Information
- Units in Building: 2
Lot Features
- Lot Size Range: Less than .25 Acre
- Lot Dimensions: 25 x 121
Financial Considerations
- Assessment Year: 1900
- Tax Year: 2024
- Pays Sewer: Public Sewer
Disclosures and Reports
- Ownership: Fee Simple
- Property ID: 20211240170000
Listed by Blue Door Dave Inc
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Schools
Schools serving 6640 S Union Ave
School District:Chicago Public School District 299
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 6640 S Union Ave
Date
Details
Price
Change
Source
3/11/2026
Listed
$399,900
566.5%
MLS
4/08/2025
Sold
$60,000
—
Public Record
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 6640 S Union Ave
Year
Property Taxes
Change
Tax Assessment
Change
2023
$39
144%
$3,499
—
2022
$16
-53%
$3,499
—
2021
$34
-95%
$3,499
-42%
2020
$642
-5%
$5,983
-12%
2019
$677
2%
$6,799
—
2018
$664
-76%
$6,799
-58%
2017
$2,726
1%
$16,038
—
2016
$2,712
10%
$16,038
—
2015
$2,458
12%
$16,038
11%
2014
$2,203
3%
$14,441
—
2013
$2,148
—
$14,441
—
2012
$2,144
—
$14,441
—
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 6640 S Union Ave
6640 S Union Avenue, Chicago, IL 60621 (MLS# 12590192) is a Multi-Family property with 2 units containing 9 bedrooms and 0 full bathrooms. 6640 S Union Avenue is currently listed for $399,900 and was received on March 11, 2026. Want to learn more about 6640 S Union Avenue? Do you have questions about finding other Multi-Family real estate for sale in Englewood? You can browse all Englewood real estate or contact a Coldwell Banker agent to request more information.

