4136 N 21st
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About this property
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.
Unit breakdown
| Unit | Rooms | Bedrooms | Full baths | Half baths |
|---|---|---|---|---|
| Unit 1 | 5 | 2 | 1 | 0 |
| Unit 2 | 4 | 2 | 1 | 0 |
Property facts
| Property type | Duplex |
|---|---|
| Status | Active |
| MLS # | 1974569 |
| County | Milwaukee |
| Bathrooms | 2 full |
| Approx. sq. ft. | 1,963 |
| Exterior | Vinyl |
| Basement | Full |
| Garage spaces | 2 |
| Tenant pays | Electricity,Heat,Gas |
| Included | None |
| School district | Milwaukee |
| Lot size | 0.11 acres |
| Property taxes | $2,693 (2025) |
Location
Directions: Please Use GPS
Listing courtesy of Coldwell Banker Realty. Copyright 2026 Metro MLS. All rights reserved. Information is supplied by sellers and other third parties and has not been verified. Income and expense figures are as reported by the listing broker; verify leases, rents and expenses before relying on them. IDX information is provided exclusively for consumers’ personal, non-commercial use.