That doesn't mean Openreach has been given the wayleave.
The checker is generic. See my post from last month in another similar thread as yours
https://forums.thinkbroadband.com/fibre/t/4780364-re...
The thing is that's Openreach checker generically showing that they are building now. But I know very well that the wayleave hasn't been granted because if it has I would've received a letter or a topic would've been shown in the Housing Estate Management website particularly as it is an MDU just like in your case.
The only thing you can hope for is if you already had a wayleave agreed for another Altnet then there's a slightly stronger likelihood that a wayleave will be granted for Openreach.
But if you are still waiting for your first wayleave then that probability is low.
For example, we have Community Fibre here and a wayleave was granted in early 2021 but it went live in December 2022. So, I waited 20 months (1 year and 8 months) from the date that the wayleave was agreed to when the service went live!
Last year June 2024 Virgin Media wayleave agreed and the letter was showing 4 weeks to complete the estate! But I know that was false as it took several months for the buildings to go live except my own! I am still waiting for it and I asked my housing estate and they have no further clarity/information on whether they'll upgrade us or not despite a wayleave.
Wayleave doesn't always mean that they'll build for that specific building/premise. Openreach might ignore the build completely even after a wayleave has been granted! Or it could be delayed for much, much longer.
My psychological state at the moment is that I have 0% hope that Openreach will upgrade us to FTTP any time soon especially without a confirmed wayleave! I had my hopes up for VM, but now that feels dashed despite a wayleave. Don't be too excited or hopeful or you'll end up more frustrated. You have to mentally prepare for zero but hope for the best.