F1Part 3 Industrial buildings allowances
Chapter 7 Balancing adjustments
Meaning of “the relevant period of ownership” etc.
321 The relevant period of ownership
The relevant period of ownership is the period beginning—
(a)
with the day on which the building was first used for any purpose, or
(b)
if the relevant interest has been sold after that day, with the day following that on which the sale (or the last such sale) occurred,
and ending with the day on which the balancing event occurs.