Hello, I have sign 321 on my building, also in gmaps. It's for delivery packages etc to easier find it on map. Next to my building it's 32 number and I have used one that for sure is not occupied by any other house. We are going to build a House and get proper number, but for now, for easier navigation it's the best way. Telling "in front of 32" is declined by a lot of delivery companies.