the MLS allows realtors to search for rent-to-own (not the public versions though). Ask around for a recommendation for a local realtor and ask him/her to search the MLS for a) lease-option and b) rentals also makred for sale, an often-overlooked alternative to (a).
Good luck and all the best,
Tobias Kaiser, MS, CIPS
Greater Fort Lauderdale Real Estate Broker + Consultant
Certified International Property Specialist