I'm buying a leasehold property that's a bit of a doer upper. I have plans to knock down a wall to create an open plan kitchen diner and block up the old back door and replace a window with french doors. It's occurred to me recently that I might need the freeholder's consent before doing so. I've tried to look at the lease wording but can't make any sense of it. My parents think it's no big deal if I don't but I plan on selling and I'm worried it'll come back to bite me in the backside.
Has anyone made alterations without consent? What happened? With consent? Did it delay things? Was there a fee? Was it a faff?