Whether your permission is granted following a successful standard application or following a successful appeal the consent last the same amount of time, usually 3 years, when it expires you'll no longer have consent and will have to re-apply.
That is not true in all cases, some permissions will have time limits imposed once the work has started to prevent long term disturbance or disruption to neighbours or others affected by the building work.
If you are thinking about conditions which may be placed on a permission, then conitions have to be relevent to national or local policy, and it's hard to see how time limits can be relevent - and certainly not just for the purpose of disturbing neighbours .... which is outside the scope of planning law in any case.
I can't imagine you could pour founds and leave for 10 years. I suppose you get into realms of enforcement notices then. There must be some sort of government caviat for this surely?
Case law has defined what needs to be done to done to implement a permission - "significant works" .... which can be foundations or infrastructure. And then there are no limits.
However, there is a provision in the Act to allow councils to take action against development which is, or appears to be, taking too long. This will allow uncompleted parts of the permission to be given a deadline - so no use for extensions or one-off buildings, but more intended for larger schemes
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