Thanks for your question.
Only the original owners of the property who imposed the covenant or the Lands Tribunal can alter, remove or modify the covenant. You need to contact the original owners (if you can) and ask if they are willing to negotiation the alteration of the covenant for your purpose. If they are then you should see a solicitor about making sure the alteration is registered against the title to the property.
The alternative, if you cannot trace the persons who imposed the covenants then you can apply to the Lands Tribunal to have the covenant modified or removed, but this is a lengthy and expensive process and often with no cast-iron guarantee of success:-
You would also probably need a solicitor or surveyor to act on your behalf.
If the covenant is very, very old then you may take the view that the owners or their successors in title will not be able to find out that you have breached the covenant and decide to proceed in any event. If you breach the covenant then 12 months later you will probably be able to take out a Restrictive Covenant Indemnity Policy to cover you against the costs of enforcement action being taken by the original person who imposed the covenant.
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