The 'shell' of the building is not normally addressable so it would not have a postcode allocated. I guess this has occured as postcode areas normally would cover up to 100 properties. I note that the response in the discussion seems to have come from a councillor at Peterborough City Council so I assume he has checked with the GIS team. Not elegant but perhaps use somethinig like addr2:postcode= (this has been used rarely e.g. https://www.openstreetmap.org/way/128457240)

On 01/11/2020 22:30, Colin Smale wrote:

On 2020-11-01 23:09, Kai Michael Poppe wrote:

Hi Colin, Hi BD,
as I live in a country with the maximum "anomality" are different 5-digit postcodes along a street (or sides of said street) I find different codes per building strange to say to least.
I'd go for:
* Remove addr:postcode= from the building's area and add a note=This building has two postcodes, X and Y * Add two new nodes within the area of the building (not connecting to the area), add all addr:*= with the respective postcodes and add a note=This building (link to way/area of building) has two postcodes, this node is for levels A thru B.
* Change the Note in the area to display the links to the Postcode Nodes.
I would recommend leaving this to UK mappers who understand the UK postcode system.... Postcodes don't indicate buildings in the UK - they indicate postal delivery points. Don't try and find logic where none exists... The relationship is n:m. You cannot ask "what is the postcode for this building" - you have to ask "what postcodes have a delivery point in this building". You cannot ask "which building does this postcode indicate", you have to ask "which buildings have a delivery point with this postcode."



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