You'll need to use a local bank that specializes in land loans, Heritage Land Bank, Texas Star Bank, etc. or if you have a good relationship with a banker you can to talk to them. Land loans are not mortgages so the rates are higher and the banks generally want more down - like 20% or more. If you can find it, there's owner financing (what we did) as well. Since this is TX, chances are you won't be able to get mineral rights - but try, if nothing else to prevent a gas well from going in without you being able to say yes or no or getting a cut of the profits. Fannin, Cooke, Grayson, Hunt counties are cheaper than Collin, Tarrant in the north, I have no idea on south dallas. With so many people moving here, buy it soon as it goes up daily - ours has more than doubled in value from what we paid for it 3 years ago. Once you start to build, you'll have a construction loan that will pay off the land and fund the construction, which will then roll over into a mortgage.