So are you now ordering FTTP service for a building that until now had no need of any telephony or broadband service , or was this only ever an academic pursuit ?
It isn't an academic exercise, it is a better location for a small fixed wireless access network gateway. The current site has multiple FTTC connections and is in a pub/B&B which has had a string of new owners and landlords over the last few years. With there being a risk of having to relocate FTTPoD didn't make sense, community or farm buildings are generally much better. (Before anyone starts going on about leased lines or shared use, the sums wouldn't add up in this situation and the ISP knows what the connection will be used for).
you probably should also get the error corrected , a village hall shouldn’t be classed as residential but business
That's only in the Openreach database, and I'm not sure what difference it makes as you can order business services at residential addresses.