[Talk-GB] OSM UK address project: tags - Updated guidance

[Donald Noble]

Evening all,

I think the addressing of flats might just be too complicated for one
standard schema. Is this maybe where addr:full comes into play?

Just to add a few more edge cases for Scottish tenements. Many are known by
the council as something like 10 3f2 The Street (meaning second flat on the
third floor at number 10), but (assuming 2 flats per floor and the ground
floor have separate front doors 8 & 12) then the Post Office will call this
10/6 (the sixth flat in the stair). However, I also lived in a tenement in
Glasgow, where the postal address was like "3/1 123 The Street; Glasgow; G1
23AB", although the council called that 123 3f1. I have also heard of some
tenements being listed as 3L and 3R (ie left and right) but don't think
this is at all common.

I have so far generally avoided tagging flats in tenements, but for other
buildings I would use addr:flats=1-6 or addr:flats=A-F depending on what is
on the door. I also do not like the idea of tagging these with the word
flat or whatever. I would like to think something addressed to "Flat 1; 123
The Street", would end up at "Apartment 1; 123 The Street", regardless of
the naming. Indeed my friends who used to live in "Loft 3" only used the
numeric form of 123/3 The Street.

Cheers, Donald

On Sun, 9 Jan 2022 at 18:29, Rick Bowlby <rb-osm at libarch.co.uk> wrote:

> On Sun, 9 Jan 2022 at 00:21, Rob Nickerson <rob.j.nickerson at gmail.com>
> wrote:
>
>> ...
>> I would suggest that if you map individual flats then, if they include
>> the word "Flat" in the address include this in the tag (e.g. addr:unit=Flat
>> 1). I probably would extend that to multiple addresses tagged with
>> addr:flats otherwise how is anyone going to know when the written address
>> should include the word Flat and when it shouldn't.
>> *...*
>>
>
> So in the example I gave, I think you're proposing that
> addr:flats=11-12;25-28;41-44;51-54 should become addr:flats=Flat 11- Flat
> 12;Flat 25- Flat 28;Flat 41- Flat 44;Flat 51- Flat 54. I really don't like
> this:
> 1) Repetition and redundancy;
> 2) None of the current 13,000+ UK tags
> <https://taginfo.openstreetmap.org.uk/keys/addr:flats#overview> are
> currently like this as far as I can see;
> 3) In its current form, a fairly simple function can parse tag values like
> this to determine the number of flats - this is what I use it for. Adding
> in a designator word before each number/letter in ranges would really
> complicate it.
>
> I suggest either:
>
>    - a separate tag, possibly 'addr:unit_designator', maybe with a
>    default value if absent eg "Flat"
>    - prefixing the addr:unit/flats value before a (say) colon - ie
>    addr:flats=Flat:11-12;25-28;41-44;51-54 (I'm less keen on this idea)
>
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-- 
Donald Noble
http://drnoble.co.uk - http://flickr.com/photos/drnoble
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