We need to know the reinstatement value of the house that we're buying so that we can organise buildings insurance. Annoyingly, our surveyor didn't provide an estimate in his (otherwise really detailed) report and says that an estimate will require an additional fee. Our lender only did a desktop valuation of the property so they haven't drawn up their own separate estimate for the reinstatement cost.
Surveyors round here are all booked up so that there's a wait time of weeks and we really don't want to delay the transaction if we can help it. Our solicitor is firmly against asking the vendors to tell us what reinstatement value their current insurance covers.
I've performed an estimate using the BCIS Calculator online but is that good enough for insurers? In the interests of not delaying the transaction I'm wondering whether we should use that as the basis for our insurance and then get a surveyor to do a more detailed estimate after we've completed so that we can adjust our insurance if necessary.
If not, is there anything else that we can do, or do we just need to somehow find the extra cash for our original surveyor and hope that he can provide an estimate quickly?