CIL - extension and alterations a new dwelling and self-build exemption - Public forum - Planning Advisory Service (PAS)

I currently have a self-build part I claim form for a dwelling, the permission is to substantially extend and alter an existing bungalow, which due to the extent of works was considered as a new dwelling as opposed to an extension over 100sqm.  My concern is that I do not think form 7: part 2, section B3 can be satisfied, that is, submission of an approved claim form HM Revenue and Customs under VAT 431NB:VAT refunds for DIY house builders or a specialist self build warranty or mortgage.  Any advice would be appreciated