Homes for Sale Under 400K in San Marcos TX

Based on information from Unlock MLS (alternatively, from ACTRIS) for the period through 2026-03-02 01:52:27 PST. Neither the Board nor ACTRIS guarantees or is in any way responsible for its accuracy. All data is provided “AS IS” and with all faults. Data maintained by the Board or ACTRIS may not reflect all real estate activity in the market. 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. Some IDX listings have been excluded from this website. [Click here for more information](/mls-disclaimers/#27)

IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

Copyright 2026, Houston REALTORS® Information Service, Inc. The information provided is 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. Information is deemed reliable but not guaranteed.

Listing and property data is from an Internet Data Exchange (IDX) provided by the Central Texas MLS. Some properties which appear for sale on the website may no longer be available because they are for instance, under contract, sold or are no longer being offered for sale. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2026 Central Texas MLS, All Rights Reserved.