ADA requirements

Hello - I have a question about ADA door clearances. I am doing a renovation and was told by my architect that ADA regulations require door clearances be 32". But because my doors will only open to 90-degrees, that due to thickness of door, that we will need to put in 34" or 36" doors to meet this clearance. I've been told by my contractor that 34" doors are custom and thus very $$$ (I'm doing a 4-panel door) and to go with 36" wide door. But that seems like overkill as far as what is necessary or what looks good, especially in a small NYC apt. Architect says I can put in narrower doors, but must be willing to renovate to make them ADA compliant in the future if I sell and a buyer requests this. Just curious whether others have experience making these decisions. Thanks!