In response to a question regarding living in joint family Ashrafiya replied,
It is highly discouraged these days.
However, you have to be very gentle, humble and diplomatic in conveying this to your parents.
Do it slowly. Be open. Prepare well before the discussion. Show extreme empathy and understanding. Stress that you are totally committed for close family ties and it is only to maintain these it is in the best interest of all to live separately. It can be upper lower level or adjacent or same neighborhood residence.
Make lot of dua regarding this. InshaAllah best will happen.