All exchanges must have the written permission of both landlords. Permission can only be refused on certain grounds. The following refers to England and Wales and if you are exchanging with someone in Scotland you must get advice from your housing officer.
The grounds apply to both the property you want to move to and your own property.
If either landlord refuses permission on the grounds detailed below the swap can not go ahead.
You or the person you want to swap with have been served with a possession order or a suspended possession order.
A notice seeking possession has been served on you or the person you want to swap with or possession proceedings have begun.
The property you want to move into is substantially larger than you reasonably need or your property is substantially larger than the person you want to swap with needs.
The property you want to move to is not reasonably suitable for your needs, or your property is not reasonably suitable for the needs of the person you want to swap with.
The property is part of or close to a building that is held for non housing purposes. Or is situated in a cemetery and was let to you or your predecessor in connection with your employment with the landlord, or with a local authority, a new town corporation, housing action trust, development board for rural Wales, or the governors of a grant aided school.
The landlord is a charity and if the exchange went ahead the occupation would conflict with the objects of the charity.
The property is designed for a physically disabled person and if the exchange went ahead a disabled person would not be living there.
The landlord provides accommodation only for people in particularly difficult circumstances and if the exchange went ahead the criteria would not be met.
The property is let to people with special needs and there is a social service or special facility close by to help the tenants and if the exchange went ahead no person with special needs would be living there.