My back garden is adjacent to a private car park to a low-rise block of flats. I would really like to create a parking space in my garden with gated access through the party wall.
Vehicle access would be through the private car park, but not through an alloted parking space. Clearly there is a party wall issue here, and we have dealt successfully with both the landlord and tennants in the past. Do I need planning permission? And should planning permission come before or after the party wall negotiations?