[member=201673]Cornishmaid[/member] - The permitted dev' (PD) notice might not, of course, result in acceptance by CC that permitted dev' is appropriate, but, of course, if they do not respond in timely manner, then you may proceed with any agri' related development that falls within the PD rules.
I cannot vouch for whether Cornish land sales are any worse for uplift provisions than elsewhere, but they do seem to be very prevalent from my experience also*. My land is also covered by an overage clause, but it didn't cover commercial dev' - everyone told me it did, but I noted the covenant made no mention (as my solicitor eventually acknowledged) and so it's worth looking very carefully at the wording of uplift clauses.
I asked about why your land was only partially subject to an uplift clause because it suggests some of your land might be more likely to gain PP at some future point than the rest. Paying an uplift amount to the previous owner (if PP could be achieved) might be more cost-effective than buying a building plot or existing house/houses nearby!?
[* A laughable example of Cornish overage: I was once quite interested in a property registered as a licensed cafe/restaurant, but which was no longer trading. And then I received notice from the agent of the actual overage conditions: it was something like ... "If PP is gained for residential use then
all of the uplifted property value will be paid to the seller."
I tell no lie and you can guess what I said to the agent in reply. They never got back to me. ]