Hello Mildred. I know you may have emailed me before. The best apartments are the Terrace apartments. Many of them have low stairs and a ramp can be made available to you. Not all Terrace apartments are accessible however. But more accessible than others. There are a few buildings with main floor entrances, without stairs in the West.
Mildred - Yes, you need a buyers agent to help you. I think I can refer you to an agent who would be pleased to assist you in buying a condo there. I know several agents in that area who are excellent. I will just need to touch base with them to see who is most familiary with Pkchester. Please send me your contact information email@example.com 703-669-3142