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4736 Heidelberg Avenue, Unincorporated, MO, 63123

HOUSE HACK OPPORTUNITY in the heart of Affton! This rare 3-unit property offers incredible flexibility for both investors and owner-occupants. The rear carriage house (2 bed / 1.5 bath) is now vacant—perfect for an owner to move in immediately while offsetting the mortgage with income from the front duplex. Situated on one lot, the property includes a front duplex with two units (2 bed / 1 bath and 1 bed / 1 bath) plus a separate 2-story carriage house featuring its own private yard and parking. The duplex offers a full basement with individual laundry hookups, along with a covered front porch and rear deck for added tenant appeal. Currently generating $2,026/month from the occupied duplex units, with additional income potential from the now-vacant carriage house. Opportunity to significantly increase rents to market rates or owner-occupy for added flexibility. Major updates provide peace of mind, including new roof, siding, gutters, soffits, and fascia (2022), updated bathrooms (2023), and HVAC replacement in one unit (2025). Property has been professionally managed and offers a turnkey investment opportunity with strong rental history and consistent demand. Conveniently located on a quiet residential street just minutes from Gravois Rd, shopping, dining, and major highway access. Only 10 minutes to Grant’s Trail, Deer Creek Park, and Affton schools. Don’t miss this opportunity to own a versatile, income-producing property with immediate upside and owner-occupant potential!

Subdivision: McDermott & Haydens Hannover Heights

List Price

$ 230,000

Status

Active Under Contract

Days on market

0

MLS#

26015891

Bedrooms

0

Full baths

0

Sq. Ft. Above

2,536

Subdivision

McDermott & Haydens Hannover Heights

Municipality

Unincorporated

School District

Bayless

County

St Louis

Property Type

Residential Income

Style

Craftsman

Type

Residential Income

Additional Information

Property Tax (2025)

$3,226

Recent Nearby Sales in 63123

Last 6 closed homes in this zip.

Address Bd/Ba SqFt List Sold Closed
9713 Shuffle Drive, Unincorporated, MO 63123 4/3 1,250 $294,900 $300,500
101.9% of ask
Sep 4, 2026
4630 Tiemann Avenue, Unincorporated, MO 63123 2/1 910 $130,000 $122,440
94.2% of ask
Sep 4, 2026
11219 Behr Drive, Green Park, MO 63123 3/2 960 $275,000 $270,000
98.2% of ask
Sep 3, 2026
4746 Seibert Avenue, Unincorporated, MO 63123 2/2 1,073 $225,000 $236,000
104.9% of ask
Sep 2, 2026
9131 Lucia Drive, Unincorporated, MO 63123 2/2 1,042 $239,900 $247,500
103.2% of ask
Sep 2, 2026
9438 Tiber Drive, Unincorporated, MO 63123 3/1 888 $225,000 $225,000
100% of ask
Sep 1, 2026

Price & Listing History

Listed for sale
Mar 19, 2026 at $235,000
Price reduced by $5,000 (2.1%)
From $235,000 to $230,000
Current status: Active Under Contract
As of Aug 29, 2026 · $230,000

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