During the post WWII era in Oklahoma, I believe new construction would have possibly resulted in basements being reintroduce to the everyday mainstream of housing, but building technology hadn't advanced enough and Oklahoma water tables resulted in leaky, moldy basements. Builders tried to add the bonus living space but it didn't work. Thus, they simply just quit building basements, the consumer didn't demand them and construction went on without them. They didn't need the extra square footage. Scarcity of land is not a problem in Oklahoma. People enjoy large lots and the cost of living provides an exceptional lifestyle and home for a modest price. Hence, another 70 years have passed without basements being built. They are not a part of the architectural expectations today. There are certain neighborhoods in Oklahoma City and Tulsa built during this era that have basements and they aren't selling features in my opinion. They are damp, putrid, stale, musty small rooms leaking water with sump pits that lack the ability to be renovated into anything other than hope from a tornado.
Fast forward to today, and people want basements in Oklahoma. As a result of technology they can be built and withstand the elements of the ground. Unfortunately, modern basements of today are something that only the wealthy can afford and are built at the time of construction on new homes. The few homes in Oklahoma City with basements will either be luxury homes with stunning living spaces or old cellars that in most cases are damp and musty. There are very few in 'betweens' for the average homeowner in Oklahoma City. Adding a basement is simply not cost efficient, especially since the licensed engineers that build basements and builders do not seem to cooperate. Hence, the reason you will often hear the phrase, "The Oklahoma basement is our third car garage." Meaning, most people use a basement for storage, and you'll find most people use their third car garage for storage too. Understand the history of Oklahoma, and it makes sense why we don't have basements for the masses; yet.