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New Construction Homes in O'Fallon, MO
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  • The buying timeline

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152 listings
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3 bedsNew constructionWith a pool

New Construction Homes in O'Fallon, MO

New Construction Homes in O'Fallon, MO

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24 of 152 Listings
Map

New Construction Homes in O'Fallon, MO

24 of 152 Listings

Your local team in O Fallon

TO

Thomas O'Leary

Realty.com

Lic. #2020001504

Call Thomas
LS

Lynne Schlereth

Preferred Rate

NMLS #2378688

Call Lynne
  1. 2 The Westhampton II at The Grove — photo1Active

    $644,900

    4 bd · 3 ba · 3,056 sqft

    2 The Westhampton II at The Grove, O'Fallon, MO

    Kristin Gansman · STL Buy & Sell, LLC

  2. 404 River Crest Crossing — photo1Active

    $613,900

    3 bd · 2 ba · 1,959 sqft

    404 River Crest Crossing, O'Fallon, MO

    Kristin Gansman · STL Buy & Sell, LLC

  3. 401 Farmhouse Drive — photo21Active

    $608,486

    3 bd · 2 ba · 1,870 sqft

    401 Farmhouse Drive, O'Fallon, MO

    Gia Linville · Consort Realty, LLC

  4. 1 Tbb Magnolia @ Columbia Meadows — photo33Active

    $482,282

    3 bd · 2 ba · 1,912 sqft

    1 Tbb Magnolia @ Columbia Meadows, O'Fallon, MO

    Amanda Alejandro · Realty Shop

  5. 1 Tbb Columbia @ Columbia Meadows — photo27Active

    $436,696

    3 bd · 3 ba · 1,771 sqft

    1 Tbb Columbia @ Columbia Meadows, O'Fallon, MO

    Amanda Alejandro · Realty Shop

  6. 1 Tbb Grand Columbia @ Columbia Meadows — photo26Active

    $459,182

    3 bd · 2 ba · 1,826 sqft

    1 Tbb Grand Columbia @ Columbia Meadows, O'Fallon, MO

    Amanda Alejandro · Realty Shop

  7. 403 River Crest Crossing — photo1Active

    $659,900

    3 bd · 2 ba · 1,960 sqft

    403 River Crest Crossing, O'Fallon, MO

    Kristin Gansman · STL Buy & Sell, LLC

  8. 407 Roddens Way — photo4Active

    $532,900

    4 bd · 3 ba · 2,491 sqft

    407 Roddens Way, O'Fallon, MO

    Alexander Hencheck · FH Realty

  9. 149 Cardow Drive — photo4Active

    $658,900

    4 bd · 3 ba · 2,768 sqft

    149 Cardow Drive, O'Fallon, MO

    Alexander Hencheck · FH Realty

  10. 2 Georgetown at Harvest Townhome — photo23Active

    $259,740

    2 bd · 2 ba · 1,200 sqft

    2 Georgetown at Harvest Townhome, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  11. 10 Pershing Circle — photo39Active

    $434,500

    3 bd · 3 ba · 1,647 sqft

    10 Pershing Circle, O'Fallon, MO

    Michelle Craft · RE/MAX EDGE

  12. 2 Hickory at Post Farms Enclave — photo23Active

    $394,900

    3 bd · 2 ba · 1,570 sqft

    2 Hickory at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  13. 2 Fieldcrest at Post Farms Meadows — photo23Active

    $335,900

    3 bd · 3 ba · 1,920 sqft

    2 Fieldcrest at Post Farms Meadows, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  14. 2 Carolina at Post Farms Meadows — photo19Active

    $295,900

    2 bd · 2 ba · 1,214 sqft

    2 Carolina at Post Farms Meadows, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  15. 2 Hermitage II at Post Farms Enclave — photo27Active

    $427,900

    4 bd · 3 ba · 2,539 sqft

    2 Hermitage II at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  16. 2 Belmont at Post Farms Meadows — photo20Active

    $310,900

    3 bd · 2 ba · 1,478 sqft

    2 Belmont at Post Farms Meadows, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  17. 2 Arlington at Post Farms Meadows — photo18Active

    $285,900

    2 bd · 2 ba · 1,252 sqft

    2 Arlington at Post Farms Meadows, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  18. 2 Maple Expanded at Post Farms Enclave — photo23Active

    $436,900

    3 bd · 2 ba · 1,989 sqft

    2 Maple Expanded at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  19. 2 Pin Oak at Post Farms Enclave — photo38Active

    $464,900

    4 bd · 3 ba · 2,904 sqft

    2 Pin Oak at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  20. 2 Nottingham at Post Farms Enclave — photo34Active

    $448,900

    4 bd · 3 ba · 2,940 sqft

    2 Nottingham at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  21. 2 Burlington at Post Farms Meadows — photo24Active

    $305,900

    3 bd · 2 ba · 1,566 sqft

    2 Burlington at Post Farms Meadows, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  22. 2 Sequoia at Post Farms Enclave — photo26Active

    $432,900

    4 bd · 3 ba · 2,784 sqft

    2 Sequoia at Post Farms Enclave, O'Fallon, MO

    Pamela Chyba · ListWithFreedom.com Inc

  23. 1 Arlington II - E4 @ Harvest Heritage — photo19Active

    $638,900

    3 bd · 2 ba · 2,496 sqft

    1 Arlington II - E4 @ Harvest Heritage, O'Fallon, MO

    Boehmer · Berkshire Hathaway HomeServices Select Properties

  24. 1 Wyndham E3 @ Harvest Heritage — photo29Active

    $722,900

    4 bd · 4 ba · 3,752 sqft

    1 Wyndham E3 @ Harvest Heritage, O'Fallon, MO

    Boehmer · Berkshire Hathaway HomeServices Select Properties

12…7

Explore O Fallon homes

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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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Listing data & MLS disclosures

MARIS MLS
Based on information submitted to the MLS GRID as of 2026-08-31 05:37:49 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.
    • New construction
    • With a pool

    Your local team in O Fallon

    TO

    Thomas O'Leary

    Realty.com

    Lic. #2020001504

    Call Thomas
    LS

    Lynne Schlereth

    Preferred Rate

    NMLS #2378688

    Call Lynne

    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 housing market

    August 2026 · This period is still settling

    O'Fallon 12-month median sale price trend

    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.