Surely this is just a Silver address (appears in the Royal Mail PAF but not in Openreach's DB)? When we get these we simply submit a new line order, the order sometime goes to Openreach Planning and is delayed slightly and then providing all is ok and appointment is made to install the line with the end user. After that a broadband order can be placed or is simultaneously provided.
Yes exactly. The planner will do their best to identify the nearest DP and the job will eventually go out to Openreach. Usually not to a contractor in my experience as the system often seems to flag that direct labour is required on tricky installs.
An engineer then goes out and has a go, basically, they push the line through as far as they can and then kick the job back to a planner to decide what needs to be done to get the line through to the house, could be an additional pole or some ducting from a jointbox.