I hope I can give some useful info here. I've moved house with PN 3 times in 3 weeks due to circumstance and each time they followed me around putting lines in.
Don't do anything until completion, if it falls though, which we all know is possible then it's a waste of money. I put a phone line into a property and had to leave 3 days later.
It was 1 week for me for a new line and this includes lines with no dial tone that have been unplugged for capacity reasons.. If there is a dial tone and 17070 produces a number it's a stopped line and that's done within 24 hours by the exchange itself.
If the line is active and has the faceplate it could just be a case of sending out the PN modem as the last person should have left the OR modem at the premises. This is what BT advise. And there is a good chance, unless the NGA is rammed, that they will still be connected there also.
Edited by pcoventry76 (Wed 03-Sep-14 10:15:35)