I am looking to invest in some properties in DFW but did not realize how many houses had foundations issues here due to the clay soils. 

Like Dan, we have a standardized paint (white clay by Behr in eggshell, but SW will mix it NP)

Foundation issues can be present, especially in OKC, because much of the city is built on red clay.

Very difficult area to be a landlord.Tenant base is lifer tenants. very tough on the housestheft is rampant you leave a home vacant for more than a few days and you HVAC AC unit will take a walkKids break in and trash them.YAZOO Clay screws up the foundations big time.And lastly with those homes they were built so cheap in many instances they are just functionally obsolete and take way more maintenance than other areas of the country.

@Clay Logan You are stuck with income tax on withdrawals until you reach age 59.5.

@Clay Asplundh any insights here? 

That particular area is known for clay deposits in the ground that can really mess up foundations.

Quote from @Clay Gross: I don't think it's worth it, I see a lot of goofballs with the peace sign on their hat and their car selfie profile pictures asking pretty basic questions in a lot of public fb ws groups. 

in this particular development soil was clay..

I've got to hear good ole' Clay's pitch.