Herts 4/5 bed house exchange for 4 London

4 bed terraced house is in a quiet close in Royston. It has 3 double rooms and 1 single bedrooms, bathroom and toilet on 1st floor. Large living room, large kitchen and huge garden on ground floor. In addition, this home has a 5th bedroom/guest room/extension with 2nd toilet on lower level. This 5th room has a separate entrance and has the potential to be used as a granny flat/ 5th bedroom/ room for those with mobility issues as it has level access to all ground floor rooms and potential for a wet room.

Looking for minimum 4 bed house or street property with garden in Hackney, Islington or Camden, Muswell Hill or Crouch End.