San Marcos Home Sizes Are Growing in September

Deal of the Week

Deal of the Week · 340 Navidad River DR, San Marcos TX 78666 · MLS #4925570 · Listed by Keller Williams City-View. ALEX valuation $196,000 is an ALEX Intelligence estimate, not an appraisal.

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 $256,000 340 Navidad River DR, San Marcos TX 78666 · MLS #4925570 Listed at $172,999, 3 bed, 2 bath, 1,380 sq ft. Listed 12% below the ALEX valuation; price reduced 14% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1184684834/340-Navidad-River-DR-San-Marcos-TX Lower-middle quartile: $256,000 to $320,000 105 El Mirage RD, San Marcos TX 78666 · MLS #2500731 Listed at $265,999, 4 bed, 2 bath, 2,014 sq ft. Listed 11% below the ALEX valuation; price reduced 18% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1182553068/105-El-Mirage-RD-San-Marcos-TX Upper-middle quartile: $320,000 to $440,000 1013-1015 Sagewood TRL # 1015, San Marcos TX 78666 · MLS #7565068 Listed at $420,000, 3 bed, 2.5 bath, 3,192 sq ft. Listed 6% below the ALEX valuation; 27% under the local price per sq ft; price reduced 15% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1185800507/1013-1015-Sagewood-TRL-1013-1015-San-Marcos-TX Upper quartile: $440,000 and up 328 Bundleflower WAY, San Marcos TX 78666 · MLS #7464017 Listed at $474,900, 4 bed, 3 bath, 2,529 sq ft. Listed 6% below the ALEX valuation; 5% under the local price per sq ft; price reduced 19% from original. See it on alex.realestate: https://www.alex.realestate/listing-detail/1186060641/328-Bundleflower-WAY-San-Marcos-TX

Key figures · San Marcos · September 2026

50 homes sold in San Marcos in September 2026 (down 26.5% on a year earlier).

Median sale price: $342,500 (up 2.4% on a year earlier).

Median price per square foot: $183.

Median days on market: 74.

Median sale price as a share of the original list price: 90.6%.

410 homes for sale now, about 6.2 months of supply at the pace of the last six months.

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

Are homes getting bigger in San Marcos? The median living area for closed sales reached 1,926 square feet in September 2026, up from 1,859 square feet in the prior month. This represents a 3.6% increase compared to August and a 3.5% rise over the same month last year. ALEX Intelligence analyzed rolling trends across 50 closed transactions to track how home sizes are shifting in this market. The data shows a clear move toward larger floor plans, with the average size climbing steadily over the trailing twelve months. While the median price per square foot dipped slightly by 2.1% compared to September 2025, the total footprint of homes sold has expanded. This growth suggests buyers are prioritizing space or that new construction is delivering larger units. The trend aligns with a broader shift where the median home size continues to outpace previous years, even as price adjustments occur in other metrics. For sellers, understanding this size premium can help position listings effectively against current inventory standards. The analysis covers 50 closed sales in September, providing a robust view of the current housing stock. As the market evolves, tracking these dimensional changes offers critical insight into what buyers are actually purchasing in San Marcos today. Want to see this home? Call or text George at 713.918.9951 for a private 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 MIT, Nvidia, Google & IBM-Trained. Cross Domain-Expert: Quantum, AI, Ethics, Sovereignty, Intelligence, Philanthropy. Solepoint Planning. VUI AI Cloud Architect. AI Certifications Development. Quant/AI Instructor. Castor Venture Club Member. Associate Broker. George Arnold Alexander III, MPA Director, ALEX Companies Associate Broker, Alexander Tiffany Southwest, LLC dba ALEX.realestate, et.al. Texas License #574878-B · Broker License #565194-BB Broker, ALEX Real Estate · North Carolina License #367733 Independent Broker, ALEX Real Estate · Colorado License #II.100112456 [email protected] · +1 713.918.9951