The grant is intended for properties that require less than a full build to bring them back into use. Funding, even for registered properties is at the discretion of the Local Authority, so as above, talk to them to see if they will even consider it.
The next hurdle will be planning permission, a property in such a state will almost certainly require a full planning application due to the scope of works required, and where applicable, said planning permission is a pre-requisite in order to apply for the scheme.
Talk to someone familiar with the planners in the area to establish what you might be able to get planning for. Does local needs apply and would you qualify for example.