In need of a contractor in Tulsa, OK

I have a fairly large renovation project (over $50k) on a SFH I am looking at converting to a duplex. I'm hoping to get a better idea on this reno cost and starting to take bids. Does anyone know of good / fair contractors in Tulsa OK. I will need to get permits on the job so would prefer references that are licensed or can do this to satisfy the potential rezoning requirements.

Thanks!

Justin