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Hello and thank you for your question. I will be very pleased to assist you. I'm a practicing lawyer in England with over 10 years experience.
May I ask how long the trellis has been in situ please? Has the council contacted you regarding the same?
I have not yet erected the trellis.
The council have not been involved.
Thanks. Permitted development provides that you may erect a fence or party fence wall of up to 2m in height inclusive of any trellis attached to the same without the need for a formal planning permission. If you wish to attach trellis to an existing party fence wall this is permitted by virtue of the Party Wall Act however the overall height including the trellis would need to be no more than 2m in height or planning permission would be required.
If your neighbour is agreeable the chances of the council becoming involved in practice is limited however though it cannot be guaranteed. Typically the become involved following a complaint from a neighbour in these circumstances.
Once the trellise had been in place for 4 years it would be lawful irrespective of whether you obtained planning permission though if disputed you would need to prove it was four years old so if proceeding on this basis retain evidence of the date the trellis was put up - e.g. a photo emailed to yourself or something of that nature.
Is there anything above I can calrify for you?
Understood .Thank you.
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