Usually the amended address is simply an extension of one’s previous address and presumably everything used to get there, so I think it may be business as usual.
Our house is about 600 years old, but for most of that time one could only get here by water, or by clambering several hundred metres down the rocky valley wall (both routes seem to have been well used). Then early(ish) in the last century they drilled out huge amounts of schist on our side of the valley and eventually the village got a road. However, it was another hundred years before the road got a name. Unfortunately, it’s been named after the gabariers, the boatmen who before the road was built, manned the gabarres (boats) on the Lot.
Even more unfortunately, though understandably, no one (except me and a few elderly locals) seems to have the word gabarier in their vocab, so there are endless problems, not least if the foreigner tries to give the local a history lesson! Despite all this, our mail doesn’t seem to get here any quicker now and couriers still have to phone up to find the house - à coté la riviere, 100 m aprés l’église…
Incidentally, we’re number 70, not because we’re the seventieth house on the road, but because we’re seventy metres from the boundary of the commune, And obviously every courier driver, whether they’ve come from Brive or Toulouse, knows exactly where the border of the commune of Livinhac-le Haut begins!