Last year I bought 2 adjacent lots in Vintage Oaks and am building a home there. Based on solid data, I already have $274,000 in total equity and it is rising every year. Now that being said, I bought these lots off-market and I got them for a solid price. I reached out to the owner and they told me they were actually going to put them on the market anyways, so it was very lucky timing for both of us.
As things have progressed over the last year with the market and building costs, I almost pulled the plug, too. This was because I could not afford for building costs to rise to an unknown number due to the escalation clauses that builders insert into the contract. However, I was able to work out a final contract with my builder to remove the escalation clause, even though many others told me that no builder would do that. He did. So right now interest rates are the only major variable left, but my building costs are locked in (unless I upgrade more).
I certainly think your concerns are valid. These things can go either way very quickly. My experience has been a roller-coaster. I started the building process last April and wanted it to be done this summer, and we have not even poured yet. It will be a two-year process from hiring the builder until the home is completed. That is a very long time and not everyone can do that. Go with your gut. There are so many factors and variables that go into this right now, it feels like on giant roulette wheel.
But Vintage Oaks feels extremely stable as an area in terms of demand. It is a beautiful area and they are building more and more out in New Braunfels. Veramendi will be be including more shopping and restaurants. Grand Endeavor (a builder out there) will be adding a 200-300 home development connected to Vintage Oaks. The area is just blowing up. I wish you the best of luck with your decision. It is very stressful, but one way or another I hope you come out on top!