In order to know what recourse you may have, it seems that you'd have to show how you were hurt/damaged by the PM's comments and/or actions.

For example, let's say your disability prevents you from climbing the front steps and you requested that the PM install a handicap access entrance to your building. If his response was "You don't look handicapped to me so we're not installing an access ramp", then you are being physically hurt/damaged by the PM's comments and you probably have a good chance of showing how his comments hurt your quality of life.

But, if he made a nasty remark that only hurt your feelings, there may not be much recourse for you.

I can tell you from experience that you will have to prove beyond a reasonable doubt that his comment was discriminatory, and you will have to show how you were hurt/damaged as a result. Can you prove it? Were there witnesses? Was he stupid enough to put it in writing? For your sake I hope so.

Discrimination actions require as much supporting documentation, evidence, and proof as possible in order to win your case. They will often end up being adjudicated by the NYC Commission on Human Rights.

Here's some links that may help:
http://www1.nyc.gov/nyc-resources/service/1525/report-discrimination
http://www1.nyc.gov/site/fairhousing/contact-us/file-a-complaint.page
https://www1.nyc.gov/site/cchr/enforcement/complaint-process.page


I wish you good luck.