I thought the standard was 10%. It would be a delayed completion, so possibly this is to protect the buyer more.
FYI the buyer has messed me around a bit but now says he does want to proceed subject to bank confirming the loan (so far it's in principle). So I'm now wary of anythng he says and does.
Firstly, how long woud the bank valuation take (I think it's a commercial mortgage in company name but not sure)?
An is 5% ok and not suspicious?