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Homes Under $400K in Castle Rock, CO
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Buy

Start here

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

Afford it

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  • 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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70 listings

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3 bedsNew construction

Homes Under $400K in Castle Rock, CO

Homes Under $400K in Castle Rock, CO

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13 of 70 Listings
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Homes Under $400K in Castle Rock, CO

13 of 70 Listings

  1. 940 E Plum Creek Pkwy Unit 306 — photo32Active

    $348,500

    2 bd · 2 ba · 1,128 sqft

    940 E Plum Creek Pkwy Unit 306, Castle Rock, CO

    Anita Wilkinson

  2. 6005 Castlegate Dr Unit B28 — photo19Active

    $285,000

    2 bd · 2 ba · 1,206 sqft

    6005 Castlegate Dr Unit B28, Castle Rock, CO

    Anthony Geraty

  3. 1155 S Gilbert Street Unit G301 — photo27Active

    $194,900

    2 bd · 1 ba · 756 sqft

    1155 S Gilbert Street Unit G301, Castle Rock, CO

    Weldon Hobbs MRP SRES · The Platinum Group

  4. 1267 S Gilbert St Unit 302 — photoPrice Reduced18Active

    $199,999

    1 bd · 1 ba · 634 sqft

    1267 S Gilbert St Unit 302, Castle Rock, CO

    Courtney Wolfs

  5. 940 E Plum Creek Pkwy Unit 103 — photo33Active

    $375,000

    2 bd · 2 ba · 1,284 sqft

    940 E Plum Creek Pkwy Unit 103, Castle Rock, CO

    Donita Reitze

  6. 94 Mountain Shadows Lane — photo26Active

    $399,000

    3 bd · 3 ba · 1,724 sqft

    94 Mountain Shadows Lane, Castle Rock, CO

    Sheree Cooke · Coldwell Banker Realty 24

  7. 488 Black Feather Loop Unit 218 — photo35Active

    $345,000

    2 bd · 2 ba · 1,321 sqft

    488 Black Feather Loop Unit 218, Castle Rock, CO

    The Thayer Group

  8. 795 Canyon Dr — photoPrice Reduced30Active

    $250,000

    1 bd · 1 ba · 782 sqft

    795 Canyon Dr, Castle Rock, CO

    Nichelle Phillips

  9. 1574 Olympia Cir Unit 204 — photoPrice Reduced26Active

    $310,000

    2 bd · 2 ba · 1,133 sqft

    1574 Olympia Cir Unit 204, Castle Rock, CO

    Greg Newman

  10. 1469 Nemrick Pl — photoPrice Reduced22Active

    $384,000

    3 bd · 3 ba · 1,470 sqft

    1469 Nemrick Pl, Castle Rock, CO

    Cameron McClellan

  11. 2605 Cutters Cir 105 — photo24Active

    $385,000

    2 bd · 3 ba · 1,174 sqft

    2605 Cutters Cir 105, Castle Rock, CO

    Norman F. Vialpando

  12. 6013 Castlegate Dr D33 — photo43Active

    $330,000

    2 bd · 2 ba · 1,430 sqft

    6013 Castlegate Dr D33, Castle Rock, CO

    Robert Tait

  13. 749 Canyon Dr — photoPrice Reduced15Active

    $340,000

    2 bd · 2 ba · 1,028 sqft

    749 Canyon Dr, Castle Rock, CO

    Sarah Futa

123

About Homes Under $400K in Castle Rock, CO

Homes Under $400K in Castle Rock, CO: 70 active listings as of November 15, 2026, 11:51 UTC.

Property types among these 70 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
Condominium4767.1%
Townhouse2332.9%

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Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules. Copyright © IRES. Broker Reciprocity is the current compilation of active listings of all Broker Reciprocity subscribers except those listings where the seller or the seller's agency has opted out of Internet publication by so indicating on the listing contract or by written notice to the Multiple Listing Service. Information provided is thought to be reliable but is not guaranteed to be accurate; you are advised to verify facts that are important to you. No warranties, expressed or implied, are provided for the data herein, or for their use or interpretation by the user, Information deemed reliable but not Guaranteed. Information being 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. Copyright ©2026 Information and Real Estate Services, LLC. All rights reserved.
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The content relating to real estate for sale in this Web site comes in part from the Internet Data eXchange (“IDX”) program of METROLIST, INC., DBA RECOLORADO® Real estate listings held by brokers other than Realty.com are marked with the IDX Logo. This information is being provided for the consumers’ personal, non-commercial use and may not be used for any other purpose. All information subject to change and should be independently verified. This publication is designed to provide information with regard to the subject matter covered. It is displayed with the understanding that the publisher and authors are not engaged in rendering real estate, legal, accounting, tax, or other professional services and that the publisher and authors are not offering such advice in this publication. If real estate, legal, or other expert assistance is required, the services of a competent, professional person should be sought. The information contained in this publication is subject to change without notice. METROLIST, INC., DBA RECOLORADO MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. METROLIST, INC., DBA RECOLORADO SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR ANY DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. PUBLISHER'S NOTICE: All real estate advertised herein is subject to the Federal Fair Housing Act and the Colorado Fair Housing Act, which Acts make it illegal to make or publish any advertisement that indicates any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin. METROLIST, INC., DBA RECOLORADO will not knowingly accept any advertising for real estate that is in violation of the law. All persons are hereby informed that all dwellings advertised are available on an equal opportunity basis.

Castle Rock housing market

October 2026 · This period is still settling

Castle Rock 12-month median sale price trend

Selling at 98.4% of asking price

Buyers here are paying below asking. MLS · 116 sales · as of Oct 30, 2026

Homes that sold · County records, as of Oct 28, 2026

Median sale price
$733,000$564,000–$940,462 typical range
Price per sq. ft.
$258
Sales
122
Paid in cash
23.0%

Homes on the market · MLS, as of Oct 25, 2026–Oct 30, 2026

Median list price
$725,000
Homes for sale
544
Median days on market
33 days

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

Year-over-year
2.7%

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

Median home size
2,694 sq. ft.

Castle Rock, CO community profile

Population
81,854
Median income
$132,215
Housing units
28,808
People per sq. mi.
542.4
Area
150.9 sq. mi.

Source: HJN community data