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Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

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New construction

278 listings

Homes for Sale in O'Fallon, MO

Homes for Sale in O'Fallon, MO

14 of 278 Listings

Homes for Sale in O'Fallon, MO

14 of 278 Listings

34Active

$702,900

4 bd · 4 ba · 3,752 sqft

1 Tbb Wyndham @ Harvest Heritage, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$716,900

4 bd · 4 ba · 3,840 sqft

1 Tbb Parkview II @ Harvest Heritage, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$728,900

4 bd · 4 ba · 3,798 sqft

1 Wyndham E5 @ Harvest Heritage, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$397,900

3 bd · 3 ba · 2,013 sqft

1 Tbb Bedford @ Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$422,900

3 bd · 3 ba · 2,250 sqft

1 Tbb Radford @ Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$349,900

3 bd · 3 ba · 1,629 sqft

1 Tbb Devonshire @Harvest Cottages, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$372,900

3 bd · 3 ba · 1,756 sqft

1 Tbb Dover @ Harvest Cottages, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$334,900

3 bd · 3 ba · 1,422 sqft

1 Tbb Windsor @ Harvest Cottages, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$362,900

3 bd · 2 ba · 1,347 sqft

1 Tbb Ashland 3Bed@Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$393,900

3 bd · 2 ba · 1,700 sqft

1 Tbb Highland 3Bd@Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$369,900

2 bd · 2 ba · 1,492 sqft

1 Tbb Highland @ Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$417,900

3 bd · 3 ba · 2,113 sqft

1 Tbb Fairfax @ Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$357,900

2 bd · 2 ba · 1,347 sqft

1 Tbb Ashland @ Harvest Villas, O'Fallon, MO

Kelly&Linda Boehmer · Berkshire Hathaway HomeServices Select Properties

$585,000

— bd · — ba · 1,827 sqft

9045 Highway Dd, O'Fallon, MO

Thomas Kruse · ReeceNichols Real Estate

Explore O Fallon homes

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L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

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New construction
With a pool

Your local team in O Fallon

TO

Thomas O'Leary

Realty.com

Lic. #2020001504

LS

Lynne Schlereth

Preferred Rate

NMLS #2378688

Your local team in O Fallon

TO

Thomas O'Leary

Realty.com

Lic. #2020001504

LS

Lynne Schlereth

Preferred Rate

NMLS #2378688

Listing data & MLS disclosures

MARIS MLS: Based on information submitted to the MLS GRID as of 2026-08-05 16:31:44 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

O'Fallon, MO community profile

Population: 96,497
Median income: $101,965
Housing units: 36,476
People per sq. mi.: 3,112.8
Area: 31 sq. mi.

Source: HJN community data

O'Fallon, MO Homes for Sale — Page 12 | Realty.com

O'Fallon housing market

August 2026 · This period is still settling

Homes that sold · County records, as of Aug 11, 2026

Median sale price: $355,015$260,984–$431,639 typical range
Price per sq. ft.: $157
Sales: 43
Paid in cash: 0.0%

Homes on the market · MLS, as of Aug 28, 2026–Aug 31, 2026

Median list price: $416,000
Homes for sale: 186
Median days on market: 12 days

Price trend · Assessor repeat sales, as of Aug 31, 2026

Year-over-year: 1.9%

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Jul 29, 2026

Median home size: 2,053 sq. ft.