Can I use an FHA or VA loan to buy a condo in Dallas?

You can, but the building has to qualify, not just you. FHA only lends in buildings that are on HUD's approved list or get a single-unit approval, and most of those require at least 35 percent of units to be owner-occupied with no more than about 15 percent of units behind on their HOA dues. VA works the same way, with project-level approval. That is why I check a building's approval status before you fall for a unit you may not be able to finance.