Ordinarily, you'd expect a new estate to be served by a coherent set of cabinets. It might be more than 1 cabinet, though, if cabs are running out of space and/or have insufficient capacity in the lines back to an exchange. So don't expect that everyone is on the same cabinet.
However, BT have been known to make a mistake in their line database, in ways that means it won't give you a VDSL2 estimate...
The biggest giveaway is that the BT Wholesale checker tells you that you are connected to the same cabinet as others nearby, where they get decent speeds, but your estimate only displays "VDSL multicast" as available.
Normally, this kind of mistake means a few houses together will not get an estimate (all the houses connected to the same DP - distribution point).