My son is now 4, we started with OFA about a year and a half ago. We have Tricare, which allows us to be enrolled in their pediatric clinic. He gets one on one ABA therapy, and is also brought into the classroom to practice his social skills with his peers who do not have autism. My son's biggest deficit has been social, so this was a real selling point for us. Sarah, the head of the clinic, has her masters in ABA and really understands how to reach my son in a way no one else has been able to reach him.
Every time a have a concern with a behavior or need any answers, Sarah has come up with some type of intervention plan.
When my son started, he couldn't sit at a table, couldn't make eye contact, couldn't wait in line, avoided other children and just wanted to play by himself. He has completely changed and enjoys playing with others and taking turns and looks us in the eye when we talk to him now.
Yes, OFA is in Olmos Park, in a historic house, so it is not a brand new facility, but the pros, especially access to typical peers to practice social skills, far outweigh the cons.