off-planadverb
/ˌɒfˈplæn//ˌɑːfˈplæn/UKIf you buy a house, apartment, etc. off-plan, you buy it before it is built, when only the plans for it exist:
An estimated 85 per cent of UK investors bought properties in the area off-plan.
off-plan
adjective /ˌɒfˈplæn//ˌɑːfˈplæn/UK
off-plan apartments/sales