San Marcos September Market Recap and Outlook

Deal of the Week

337 Trinity River HOLW, San Marcos TX 78666
Deals of the Week by price quartile. The quartiles come from the last 12 months of closed sales here. Each pick has the top ALEX deal score in its price range. Lower quartile: under $256,000 337 Trinity River HOLW, San Marcos TX 78666 · MLS #1966025 Listed at $178,999, 4 bed, 2 bath, 1,500 sq ft. Listed 10% below the ALEX valuation; 7% under the local price per sq ft; price reduced 14% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1187649556/337-Trinity-River-HOLW-San-Marcos-TX Lower-middle quartile: $256,000 to $320,000 129 Little Prairie VLY, San Marcos TX 78666 · MLS #7030655 Listed at $298,499, 4 bed, 3 bath, 2,669 sq ft. Listed 10% below the ALEX valuation; 13% under the local price per sq ft; price reduced 14% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1184697010/129-Little-Prairie-VLY-San-Marcos-TX Upper-middle quartile: $320,000 to $440,000 123 Lions Tail CV, San Marcos TX 78666 · MLS #3883854 Listed at $328,935, 3 bed, 2.5 bath, 1,960 sq ft. Listed 8% below the ALEX valuation; 15% under the local price per sq ft; price reduced 21% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1187669084/123-Lions-Tail-CV-San-Marcos-TX Upper quartile: $440,000 and up 109 Possumhaw LN, San Marcos TX 78666 · MLS #1816646 Listed at $545,625, 4 bed, 3 bath, 3,050 sq ft. Listed 4% below the ALEX valuation; 9% under the local price per sq ft; price reduced 17% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1185026696/109-Possumhaw-LN-San-Marcos-TX

Key figures · San Marcos · September 2026

Source: Unlock MLS, September 2026. Homes only (single-family, condo, townhome). Information deemed reliable but not guaranteed.

All San Marcos market figures and ALEX agents

San Marcos saw median home prices climb to $335,000 in September, a 7.2% increase from August across 51 closed sales. This marks the highest monthly price point since early 2025, even as the number of homes sold dropped 17.7% compared to the prior month. The market remains active with new listings rising to 77, though total sales volume remains below the 68 transactions recorded in September 2025. ALEX Intelligence analyzed the full year of data to identify seasonal patterns and current trends. Homes spent an average of 75 days on the market, up 17.2% from August but still slightly higher than the 72 days seen last year. Buyers negotiated a median close-to-original list ratio of 90.4%, with 92.2% of sales closing below the original asking price. Inventory levels stand at 5.95 months, indicating a balanced market where supply and demand are relatively stable. The median home size grew to 1,929 square feet, reflecting a 3.8% increase in living area compared to August. While new construction accounted for nearly half of the closed sales with 24 units, the overall pace of transactions suggests buyers are becoming more selective as mortgage rates hold near 7.32%. Looking ahead, the data shows price resilience despite lower transaction volume. The median price per square foot rose to $183, up 5.8% from August, signaling continued value in the current inventory. With 395 active listings and a steady flow of new supply, the market appears poised for gradual stabilization rather than rapid shifts in either direction. Want a closer look? Reply or call George at 713.918.9951 and we'll set up a showing. Data from Unlock MLS. Information deemed reliable but not guaranteed. Model outputs are ALEX Intelligence estimates, not appraisals. Read more Central Texas market data on the ALEX blog: https://alex-companies.com/blog
George Arnold Alexander III, MPA
MIT, Nvidia, Google, AWS & IBM-Trained. Cross-Domain Expert. Castor Venture Club.
Partner, ALEX Companies
Associate Broker, Alexander Tiffany Southwest, LLC dba ALEX.realestate, et al.
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Source data: Unlock MLS closed sales, September 2026, n=51
Cover photo: San Marcos River by Larry D. Moore, CC BY 4.0, via Wikimedia Commons; darkened, cropped and text added.
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Licensed by the Texas Real Estate Commission. Broker: Alexander Tiffany Southwest, LLC · License #565194-BB.
Diane Hart Alexander, Chair & CEO, ALEX Companies · Designated Broker · #574877-B  ·  George Arnold Alexander III, Partner, ALEX Companies · Associate Broker · #574878-B
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