Purchase price: $75,000 Cash invested: $10,000 Sale price: $120,000 This is a 2 bedroom 1 bathroom single family detached house is South Georgia.

https://www.har.com/content/department/newsroom?pid=2141Houston Real Estate Highlights for December and Full-Year 2024:
-Following two consecutive years of declines, single-family home sales rebounded in 2024 with 85...

There’s an obvious housing shortage here in SoCal.

If you can house hack where you are at, that alone will be enough learning to give you a good taste of what you might be looking for.

The interest rate isn't that huge of a difference between the 15 and 30 so worst case scenario if you have the 30 year option is you start paying it down on a 15 year timeline - sure you'll pay a little more in interest over the 15 years, but it will have been worth it if you bought another house.

You love the house and there is a likely opportunity that you may be moving back to the Austin area.  

They are trying to rent a house they do not own. 

Toxic paint et al.Would you want your family living in house remodeled with cheap Chinese s**t?

As far as your next property, if you are already considering moving you will get better loan options + interest rates if you decide to live in the next property and rent out your current house. 

I have done some research on ADUs and have come to conclusion that getting a house near a hospital or good college area with a big yard to add an adu and convert gargae to junior adu would be best.