San Antonio, Texas, is still perceived as relatively undervalued compared to Austin, but when looking at individual neighborhoods, the temperature differences are quite clear. Areas like Stone Oak in the Northside, suburban new towns, and the downtown redevelopment in Southtown are showing different price ranges and trends.

Stone Oak is characterized by excellent school districts and new communities, with the median price for single-family homes estimated to be around $420,000 to $480,000. In contrast, Alamo Heights, a long-established affluent area, frequently has listings ranging from the mid-$600,000s to over $900,000, while Southtown, closer to downtown, has a price range influenced by redevelopment, falling between $350,000 and $450,000. The northern suburbs of Schertz and Cibolo can enter the market around $350,000, making them relatively more accessible.

Recent market trends show that Stone Oak maintains a gradual upward trend, while Alamo Heights is experiencing a slowdown in transaction speed, particularly for high-end listings, showing a more stable flow. Southtown is observing a steady but gradual increase due to the influx of young residents attracted by new commercial facilities, breweries, and cafes.

From an investment perspective, the redevelopment trends in Southtown and the expansion of new roads and commercial facilities near Stone Oak are noteworthy factors. Particularly, Southtown's accessibility to downtown and redevelopment opportunities are attracting the interest of investors looking for medium to long-term capital gains.

In terms of rental yield, San Antonio as a whole shows a favorable rent-to-price ratio compared to coastal metropolitan areas, with suburban new towns like Schertz and Cibolo potentially reaching total returns in the 7% range. However, areas like Stone Oak, which have already established high prices, tend to show relatively lower yields.

However, it is essential to consider risk factors in balance. Suburban new towns are experiencing ongoing new construction, raising concerns about temporary oversupply, and increases in property taxes and insurance premiums could erode rental profitability.

For Korean households, if considering both residence and investment, the stable school districts in Stone Oak may be appealing, while suburban new towns could be an alternative for those looking to start with relatively lower initial capital. Ultimately, it is crucial to approach based on one's budget and holding period.

In conclusion, rather than generalizing that San Antonio as a whole is undervalued, it seems more reasonable to analyze neighborhood-specific variables such as school districts, redevelopment opportunities, and new construction. Continuous monitoring of both the market prices and rental market is necessary to stay informed.