SolvedVCONST02240 | Zero-rating the construction of buildings: is a building being constructed: what the term ‘existing building’ means
From HM Revenue & Customs · VAT Construction
The law identifies ‘an existing building’ by setting conditions to decide when an existing building ceases to exist. These conditions are contained in the Value Added Tax Act 1994, Schedule 8, Group 5, Note 18.
They are:
the demolition test (VCONST02250)
the façade test (VCONST02260).
An existing building remains when neither of the tests is passed.