Waiting for backhaul to be connected will be one of the factors.
In my city, the areas close to the city centre (cityfibre's existing fibre), were able to order within a month of works been done, some areas were able to order within 2 weeks.
However areas at the edge of the city have been waiting much longer and I think work has halted in some of those areas, which might be down to them waiting for something else to be done before they can finish.
I suggest emailing cityfibre, or filling the form on their site, they respond to consumers about progress of their rollout, they may not given you the answer you need but its worth a try.
Just read some of recent replies so will add more info I know.
On their checker if you are in a flat, it will probably say area is planned but cannot be installed due to needing permission from landlord or something similar. When i contacted cityfibre, they told me in those instances the street works will still be done, but you will need to get owner of property to sign a wayleave form for an install to be carried out. So according to cityfibre this does not prevent street works to your address.
I then went in to email correspondence with their landlord team two days ago after I found out my immediate area is been done during the coming months, I received a reply, the guy is visiting my city even, and he said (even before the works are done) he is going to try and arrange the wayleave on my behalf as I gave him details of my landlord. So cityfibre are quite good in this respect.
One thing I have observed is if I check a postcode where every property is a flat, cityfibre are not doing a rollout. So it might be the case if over a certain % of properties on a street are deemed MDU, then the street may get skipped. I am speculating here, as my discussions with them are only over my own situation.
Edited by Chrysalis (Wed 17-Nov-21 15:54:48)