11817 is still available. 11813 was listed on 7/31 and the seller accepted an offer on 8/8. It's in "active with contract" status and they are seeking backup offers.
If you're working with a Realtor I wouldn't delay getting out to see both of these.
If you're not yet working with a Realtor, I would be happy to assist you.
I also have a listing in Westchase is The Greens, the only "manned" gated community in Westchase:
All the best,
Alma Rose Kee, PA
Future Home Realty