You have quoted the survey note , single dwelling unit residential ug partial direct in ground
As I stated , partial direct in ground (DIG) was typically the way service was delivered to housing built in the 1960’s through to the very early 1990’s , as it suggests the copper cables are buried directly in the ground , not in ducts , this means to get optical cables to houses significant excavation is required to install new ducts , joint boxes etc to house the optical equipment and cables ….this is very expensive and time consuming.
Depending on his far away from the newly installed FTTP optical network is from your address (potentially 100m) lots of excavation may be needed , obviously it could be much less than 100 metres , but any DIG address ordering FTTP should expect a delay, and in some cases , where the costs exceed the allowed budget the consumer may be asked to contribute or the order cancelled
