[Talk-GB] Quarterly Project: Addresses and Postcodes

Colin Smale colin.smale at xs4all.nl
Thu Oct 19 11:29:01 UTC 2017

We have to remember that in the UK there is only a tenuous link between
the postal address and the physical address. A building can have
multiple postcodes, and the road/place in the postal address may not be
the same as the road/place you might expect from looking at the "nearest
road" and admin boundaries etc. Also not all buildings have postcodes,
even if geometry suggests which code they would have by virtue of the
codes on surrounding buildings. Postcodes refer to points, not to

If we add addr:* tags to objects we should make it clear that they are
POSTAL addresses, and cannot reliably be derived from geometry alone.


On 2017-10-19 12:35, Adam Snape wrote:

> Doesn't its location within the UK make an explicit UK tag unnecessary? The postcode, where present does usually indicate the other address details (though very occasionally postcodes can include more than one street). However we have no way of tagging attributes to a postcode rather than an OSM object. Using associated street relations http://wiki.openstreetmap.org/wiki/Relation:associatedStreet might be an option but seems a bit overly complicated. 
> On 19 October 2017 at 11:04, Lester Caine <lester at lsces.co.uk> wrote:
>> On 19/10/17 09:35, Adam Snape wrote:
>>> So I'd tag Steve's example: name=The Spring River, addr:street=Talbot
>>> Lane, addr:hamlet=Weldon, addr:suburb=Ebbsfleet Valley,
>>> addr:city=Swanscombe, addr:postcode=DA10 1AZ
>> One of those itches to be scratched that have been discussed elsewhere ...
>> Do we really need to add 'addr:street=Talbot Lane, addr:hamlet=Weldon,
>> addr:suburb=Ebbsfleet Valley, addr:city=Swanscombe,' to every object on
>> the street? addr:postcode=DA10 1AZ provides that data and more besides
>> and only needs augmenting with a house name/number for an address. With
>> all the other data manipulation tools being discussed, one which
>> provides common data for an object is long overdue.
>> Looking at the long format, should it not also include
>> addr:country=United Kingdom so that one knows just how to validate the
>> postcode anyway ... although I am tending towards addr:postcode:UK=DA10
>> 1AZ so that one can pick up the correct secondary data easily ...
>> --
>> Lester Caine - G8HFL
>> -----------------------------
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