St Louis County, MO Duplexes for Sale

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231 properties

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Updated: Jul 22

Renovated Furnished Duplex

7150 Tulane Avenue, University City, MO 63130

$524,900

2,468 sqft 0.09 AC lot

2,468‑square‑foot duplex with two 2‑bedroom, 1‑bath units
Fully furnished property with established short‑term rental history
Renovated interiors include granite counters, tile backsplashes, hardwood floors, and premium appliances
Second‑floor unit offers in‑unit laundry and bonus flex space
Two‑car garage plus lower‑level storage and additional laundry hookups

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Updated: Jul 22

Brick Duplex with Covered Deck

1807 Princeton Place, Richmond Heights, MO 63117

$425,000

2,980 sqft 0.19 AC lot

2,980 square feet on a 0.186‑acre lot
Two‑unit brick residence built in 1928
Five‑bedroom layout with separate living and dining areas
One apartment vacant; second unit is leased
Hardwood floors, in‑unit laundry, central air, and forced‑air heating

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Brick Duplex with Updated Systems

6709 Crest Avenue, University City, MO 63130

$260,000

2,614 sqft 0.13 AC lot

Two-unit residential property with spacious layouts, refreshed electrical and plumbing, and newer HVAC systems.

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See what stands out in St. Louis County

We check every for-sale listing in the county against comparable properties across the country. Most price about where you would expect. A few are worth a second look.

We check every listing here. A few are worth a second look.

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Renovated Mixed-Use Property

2700 Macklind Ave Saint, Louis, MO 63139

$995,000

4,320 sqft

Renovated mixed-use building with two apartments and two commercial suites in a restored historic storefront.

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Updated Tudor Duplex

7108 Tulane Avenue, University City, MO 63130

$440,000

2,912 sqft 0.09 AC lot

Two spacious three-bedroom units combine original architectural character with completed modern updates and practical ownership features.

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Brick Duplex with Private Basements

1039-1041 Midland Boulevard, University City, MO 63130

$350,000

2,041 sqft 0.17 AC lot

Two-story residences feature fireplaces, formal dining rooms, hardwood floors, and separate outdoor amenities.

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Tudor Duplex with Garage

7104 Tulane Avenue, University City, MO 63130

$409,000

2,784 sqft 0.09 AC lot

Two residences offer updated kitchens, in-unit laundry, private storage, and access to a detached brick garage.

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Updated Two-Unit Duplex

5641 Cates Ave, Saint Louis, MO 63112

$515,000

2,090 sqft

Two refreshed residences offer flexible occupancy and rental configurations near Washington University.

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Two-Unit Duplex with Central Air

3505 N 11th Street, St, Louis, MO 63107

$112,000

4,426 sqft 0.12 AC lot

Each residence offers a three-bedroom, two-bathroom layout within a historic multifamily structure.

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Brick Duplex with Basements

Saint Ann, MO 63074

$229,900

1,472 sqft 0.17 AC lot

Each residence offers a private basement area with laundry hookups and dedicated storage space.

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Updated Duplex with Rear Sunrooms

6017 Kingsbury Ave, Saint Louis, MO 63112

$595,000

3,180 sqft

Two-unit residential property with renovated interiors, private laundry, central air, rear parking, and proximity to Washington University.

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Brick Duplex with Finished Updates

Saint Ann, MO 63074

$229,900

1,472 sqft 0.18 AC lot

Two-unit property with private basement areas, laundry hookups, fenced yard, and updated kitchen finishes.

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Three-Story Brick Duplex

6619 San Bonita Avenue, Clayton, MO 63105

$889,000

2,806 sqft 0.12 AC lot

Three-story income property with leased units, a vacant upper studio, basement laundry, patio, and fenced yard.

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Renovated Furnished Duplex

7150 Tulane Ave, University City, MO 63130

$524,900

2,468 sqft

Updated residential property with two separate units, furnished interiors, rental history, and a detached two-car garage.

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Brick Duplex with Basements

Saint Ann, MO 63074

$220,000

1,440 sqft 0.22 AC lot

Two-bedroom units include appliances, private driveways, and full basements.

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Updated Two-Unit Duplex

5659 Wilborn Drive, Jennings, MO 63136

$59,900

1,196 sqft 0.11 AC lot

Two residential units feature flexible room layouts, recent system upgrades, and porch improvements in Jennings, Missouri.

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Renovated Two-Unit Duplex

7150 Tulane Ave, Saint Louis, MO 63130

$524,900

2,468 sqft

Fully furnished residential property with updated interiors, laundry facilities, storage, and a two-car garage.

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Ranch Duplex with Vacant Unit

810 Loyola Drive, Florissant, MO 63031

$175,000

1,408 sqft 0.19 AC lot

Ranch-style duplex with one available unit and one occupied by a long-term tenant in Florissant.

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Historic Duplex with Private Pool

4334 Lindell Blvd, Saint Louis, MO 63108

$650,000

3,550 sqft

Two residential units offer period character, off-street parking, and a private backyard pool in the Central West End.

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Fully Occupied Duplex

9427 Bataan Drive, Woodson Terrace, MO 63134

$210,000

0.21 AC lot

Both residences feature fresh paint, laundry hookups, updated appliances, and basement storage.

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Updated All-Brick Duplex

4175 Flad Ave, Saint Louis, MO 63110

$499,000

4,147 sqft

Two spacious residential units feature refreshed kitchens, bathrooms, hardwood flooring, and separate living and dining areas.

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Renovated Brick Duplex

2646 Melvin Avenue, St, Louis, MO 63144

$599,900

2,464 sqft 0.27 AC lot

Two-unit brick property with updated systems, in-unit laundry, and one residence available for occupancy.

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Historic Duplex with Sunrooms

3307 Halliday Ave, Saint Louis, MO 63118

$399,900

3,476 sqft

Two spacious units retain original millwork, pocket doors, mantels, cabinetry, and butler’s pantries.

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Updated Duplex Near Washington University

5641 Cates Avenue, St, Louis, MO 63112

$515,000

2,090 sqft 0.11 AC lot

Two refreshed residences include a three-bedroom layout and a separate two-bedroom unit.

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St Louis County, MO Duplexes Market Trends and Statistics

Explore 231 duplexes for sale in St Louis County, MO, showcased through 231 active listings on our real estate platform. These investment opportunities span a total of 500,217 square feet of properties for sale, with an estimated market value of $53,947,608.

Sale prices for duplexes in St Louis County, MO start at $39,500, averaging $240,837, and reaching up to $995,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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