I agree I'd also look for realtors who specialize in farm/ranch sales and make them work for their share of that commission. Welcome to BYC! Also no daggone Homeowners Associations I'm pretty sure they all say no to chicken.
I live in south central Oklahoma. And I do know there are a lot of places around Tulsa and OKC that will not allow chickens but just hang to the outskirts of these cities and you should be fine.