This isn't a condo, but if you're planning to rent anyway, you might want to check out
Banks Street Commons. My boyfriend and I are signing a lease there on Sunday, so I can't vouch for living there yet, but they do have a pool and a kids' playroom, plus concierge and some outdoor space. It's no fee, even through a broker. I used Kinley Brown at Paddington Stone Realty in White Plains and she was wonderful. I can't say enough nice things about her. If you check the thread about the renting couple moving from NYC to Westchester, I posted there 2 days ago, and someone was nice enough to respond to my post and tell me that we made a great choice picking this building. Kinley also showed us 2 condos that we could rent (also both no-fee), so there are options out there. Good luck!!