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Homes Under $400K in Ontario, CA
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Start here

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  • Before you start looking
  • The buying timeline

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  • Mortgage calculator
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  • Get pre-approved

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82 listings
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3 bedsNew constructionWith a pool

Homes Under $400K in Ontario, CA

Homes Under $400K in Ontario, CA

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18 of 82 Listings
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Homes Under $400K in Ontario, CA

18 of 82 Listings

  1. 1855 E Riverside Unit 295 — photo23Active

Your local brokerage

TO

Thomas O'Leary

Realty.com

Lic. #01840925

Call Thomas

$85,000

5 bd · 2 ba · 1,248 sqft

1855 E Riverside Unit 295, Ontario, CA

JORGE VITERI · CALIFORNIA HOME SERVICES

  • 2139 E 4th Unit 55 — photo41Active

    $175,000

    3 bd · 2 ba · 1,164 sqft

    2139 E 4th Unit 55, Ontario, CA

    Michael Franco · Keller Williams High Desert

  • 1855 E Riverside Drive Spc 81 — photo4Active

    $105,000

    3 bd · 2 ba · 1,272 sqft

    1855 E Riverside Drive Spc 81, Ontario, CA

    Emma Montes · Century 21 Masters

  • Your local brokerage

    TO

    Thomas O'Leary

    Realty.com

    Lic. #01840925

    Call Thomas
  • 310 E Philadelphia Unit 18 — photo18Active

    $145,000

    2 bd · 1 ba · 960 sqft

    310 E Philadelphia Unit 18, Ontario, CA

    Edgar Estrada Ibanez · H4S REALTY

  • 310 E Philadelphia Unit 146 — photoOpen house Sun, Nov 15 · 11:00 AM49Active

    $160,000

    3 bd · 2 ba · 1,104 sqft

    310 E Philadelphia Unit 146, Ontario, CA

    ALEX JUAREZ · NEST REAL ESTATE

  • 1855 E Riverside Unit 270 — photo27Active

    $155,000

    3 bd · 2 ba · 1,440 sqft

    1855 E Riverside Unit 270, Ontario, CA

    Daniel Fraijo · REALTY MASTERS & ASSOCIATES

  • 1512 E 5th Unit 85 — photo21Active

    $95,000

    1 bd · 1 ba · 0 sqft

    1512 E 5th Unit 85, Ontario, CA

    Micaela Solis · Coldwell Banker Envision

  • 3732 Oak Creek Dr #B — photo27Active

    $255,000

    0 bd · 1 ba · 340 sqft

    3732 Oak Creek Dr #B, Ontario, CA

    Keller Williams Realty

  • 2139 E 4th Unit 242 — photo23Active

    $250,000

    3 bd · 2 ba · 1,291 sqft

    2139 E 4th Unit 242, Ontario, CA

    Josue Ramon · Excellence Premier Real Estate

  • 1456 Philadelphia Unit 427 — photo31Active

    $119,888

    3 bd · 2 ba · 1,600 sqft

    1456 Philadelphia Unit 427, Ontario, CA

    Javier Feria · JAVIER R. FERIA, BROKER

  • 2139 Fourth Unit 185 — photo33Active

    $189,000

    3 bd · 2 ba · 1,440 sqft

    2139 Fourth Unit 185, Ontario, CA

    Leslie Carmona Singer · Hollywood Stars Realty

  • 920 S Palmetto Ave Unit 9 — photoPrice Reduced31Active

    $333,000

    2 bd · 1 ba · 686 sqft

    920 S Palmetto Ave Unit 9, Ontario, CA

    OPENDOOR BROKERAGE INC.

  • 3639 Country Oaks Loop #D — photo21Active

    $315,000

    1 bd · 1 ba · 507 sqft

    3639 Country Oaks Loop #D, Ontario, CA

    Gloria Valdez · Champions Real Estate

  • 1150 W Phillips St Unit 244 — photo28Active

    $389,000

    2 bd · 2 ba · 956 sqft

    1150 W Phillips St Unit 244, Ontario, CA

    RE/MAX MASTERS REALTY

  • 3651 Country Oaks Loop #B — photoPrice Reduced29Active

    $229,000

    1 bd · 1 ba · 400 sqft

    3651 Country Oaks Loop #B, Ontario, CA

    OMEGA REAL ESTATE

  • 1309 W Mission Boulevard Unit 5 — photo30Active

    $389,800

    2 bd · 2 ba · 845 sqft

    1309 W Mission Boulevard Unit 5, Ontario, CA

    YANG MAGGIE WU · KO TAI REALTY

  • 1855 E Riverside Dr Spc 75 — photo17Active

    $125,000

    3 bd · — ba · 1,248 sqft

    1855 E Riverside Dr Spc 75, Ontario, CA

  • 969 S Mountain — photo26Active

    $350,000

    1 bd · 1 ba · 904 sqft

    969 S Mountain, Ontario, CA

    Flavio Berny · GOLDEN RULE REAL ESTATE

  • 12…4

    Listing data & MLS disclosures

    The MLS (CLAW)
    The multiple listings information is provided by The MLS/CLAW from a copyrighted compilation of listings. The compilation of listings and each individual listing are © 2026 The MLS/CLAW. All Rights Reserved. The information provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified.
    NY State MLS
    The data relating to real estate for sale on this website comes in part from the Internet Data exchange (IDX) program of the New York State Alliance MLS. IDX information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Real estate listings held by brokerage firms other than Realty.com, are indicated by detailed information about them such as the name of the listing firms. All information deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change or withdrawal. Neither the listing broker(s) nor Realty.com shall be responsible for any typographical errors, misinformation, misprints, and shall be held totally harmless. Copyright © 2026 New York State Alliance and participating MLS's - CNYIS, UNYREIS and WNYREIS. All Rights Reserved.
    San Diego MLS
    This information is deemed reliable but not guaranteed. You should rely on this information only to decide whether or not to further investigate a particular property. BEFORE MAKING ANY OTHER DECISION, YOU SHOULD PERSONALLY INVESTIGATE THE FACTS (e.g. square footage and lot size) with the assistance of an appropriate professional. You may use this information only to identify properties you may be interested in investigating further. All uses except for personal, noncommercial use in accordance with the foregoing purpose are prohibited. Redistribution or copying of this information, any photographs or video tours is strictly prohibited. This information is derived from the Internet Data Exchange (IDX) service provided by San Diego MLS. Displayed property listings may be held by a brokerage firm other than the broker and/or agent responsible for this display. The information and any photographs and video tours and the compilation from which they are derived is protected by copyright. Copyright © 2026 San Diego MLS.

    About Homes Under $400K in Ontario, CA

    Homes Under $400K in Ontario, CA: 82 active listings as of November 15, 2026, 02:15 UTC.

    Property types among these 82 listings, by the property type each listing’s MLS reports, spelled as the MLS spells it. Types with fewer than 5 listings, and listings whose MLS reports no type, are not shown, so the shares can total less than 100%.
    Property typeListingsShare
    Manufactured Home4251.2%
    Condominium3947.6%

    Homes Under $400K in nearby cities

    • Homes Under $400K in Riverside
    • Homes Under $400K in Corona
    • Homes Under $400K in Fontana
    • Homes Under $400K in San Bernardino
    • Homes Under $400K in Anaheim
    • Homes Under $400K in Rancho Cucamonga
    • Homes Under $400K in Santa Ana

    Explore Ontario 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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    Ontario, CA community profile

    Population
    179,053
    Median income
    $72,329
    Housing units
    52,944
    People per sq. mi.
    3,566.8
    Area
    50.2 sq. mi.

    Source: HJN community data

    Ontario housing market

    October 2026 · This period is still settling

    Ontario 12-month median sale price trend

    Selling at 99.8% of asking price

    Sales here are closing essentially at asking. MLS · 108 sales · as of Oct 30, 2026

    Homes that sold · County records, as of Oct 20, 2026

    Median sale price
    $677,500$565,000–$771,250 typical range
    Price per sq. ft.
    $428
    Sales
    64
    Paid in cash
    14.1%

    Homes on the market · MLS, as of Oct 18, 2026–Oct 30, 2026

    Median list price
    $650,000
    Homes for sale
    361
    Median days on market
    41 days

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

    Year-over-year
    -4.6%

    Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 30, 2026

    Median home size
    1,554 sq. ft.