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We need to liberate the Postcode Address File

takes.jamesomalley.co.uk

261–270 of 317 posts

Re: We need to liberate the Postcode Address File

#261
post #48

Some context, for people not located in the UK - A full British postcode typically aims to cover around 15 buildings (sometime a single building, sometimes a street of 50 houses). This is in contrast to many other postal code systems which cover relatively broad areas). Or to put it another way - UK - 2,643,732 codes, 1 code per 25 people, USA - 41,700 codes, 1 code per 8000 people, Germany - 8,200 codes, 1 code per…

US 9-digit postcodes ("ZIP+4") were introduced decades ago (1983?) and are publicly findable online given an address.

The US also has a full 11-digit address code that is printed (by the USPS) on mail in a bar code when you mail a piece. This should take the mailpiece to a unique address.

Re: We need to liberate the Postcode Address File

#262

The simple solution here is a threat from the government to Royal Mail. Give us your postcode file for free, or we will simply make up a new numbering scheme, send an address card to every house telling them of their new number with their next council tax bill, and postcodes will become a thing of the past. The new numbering scheme will be unique to each house too, and have a check digit so the number alone is suffic…

Just modify the law so that databases of postal addresses are not copyrightable.

I'm surprised it is copyrightable. It wouldn't be in the US.

Re: We need to liberate the Postcode Address File

#264

Earlier quoted context omitted.

A cautionary example of how data meets reality… My address in France is listed in the BAN… but only to the granularity of my street number (e.g., 123 Main St.). Unfortunately, that number corresponds to at least 7 different structures, 5 of which are apartment buildings. Of those 5 buildings, each has multiple stairwells with their own door and no line of communication between them—they might as well be separate buil…

That sounds like chaos. Who thought constructing multiple apartment buildings without any kind of sensible post code or address was a good idea? Sure, this being reality BAN does not apparently meet reality, but it does sound like someone had the opportunity to keep reality sane here, and they didn't.

I think it means more towards that Uber Eats never works for that BAN than local post office have no clue and snail mail fails. GP didn't say the latter is the case.

Re: We need to liberate the Postcode Address File

#265

Earlier quoted context omitted.

A cautionary example of how data meets reality… My address in France is listed in the BAN… but only to the granularity of my street number (e.g., 123 Main St.). Unfortunately, that number corresponds to at least 7 different structures, 5 of which are apartment buildings. Of those 5 buildings, each has multiple stairwells with their own door and no line of communication between them—they might as well be separate buil…

This sounds like bad design by the property developer and a sloppy building authority. The first is corroborated by the lack of unit numbers. Who does such a thing? The BAN actually only tracks down to the plot level, so I assume all your structures are on the same plot. From there on it is the building authorities job to check building plans and to enter the substructures into the cadastre, where they are usually le…

> This sounds like bad design by the property developer and a sloppy building authority.

This sounds like every day reality.

> Sloppy work, all around.

It's a system that explicitly relies on the cooperation of several independent entities. You were never going to achieve anything better than this.

Re: We need to liberate the Postcode Address File

#266

Earlier quoted context omitted.

This sounds like bad design by the property developer and a sloppy building authority. The first is corroborated by the lack of unit numbers. Who does such a thing? The BAN actually only tracks down to the plot level, so I assume all your structures are on the same plot. From there on it is the building authorities job to check building plans and to enter the substructures into the cadastre, where they are usually le…

You could be right, but I think it's a little beside the point. The challenge illustrated in the blog post is that it's practically impossible to build a really accurate address dataset since the real world is messy for the reasons you listed. Just like falsehoods programmers believe about names [1], you shouldn't put much faith in anything that claims to normalize addresses either. As other commenters have said in t…

> it's practically impossible to build a really accurate address dataset since the real world is messy for the reasons you listed

Different entities will have orthogonal needs when it comes to your address. First responders want a door, the post office wants a mailbox, assessors want a plot number, etc.

Re: We need to liberate the Postcode Address File

#267

Earlier quoted context omitted.

A cautionary example of how data meets reality… My address in France is listed in the BAN… but only to the granularity of my street number (e.g., 123 Main St.). Unfortunately, that number corresponds to at least 7 different structures, 5 of which are apartment buildings. Of those 5 buildings, each has multiple stairwells with their own door and no line of communication between them—they might as well be separate buil…

That sounds like chaos. Who thought constructing multiple apartment buildings without any kind of sensible post code or address was a good idea? Sure, this being reality BAN does not apparently meet reality, but it does sound like someone had the opportunity to keep reality sane here, and they didn't.

> but it does sound like someone had the opportunity to keep reality sane here

What is "sane" about reality? People want a place to live, they don't care about government databases.

Re: We need to liberate the Postcode Address File

#268
post #48

Some context, for people not located in the UK - A full British postcode typically aims to cover around 15 buildings (sometime a single building, sometimes a street of 50 houses). This is in contrast to many other postal code systems which cover relatively broad areas). Or to put it another way - UK - 2,643,732 codes, 1 code per 25 people, USA - 41,700 codes, 1 code per 8000 people, Germany - 8,200 codes, 1 code per…

Case in point, going to a funeral the post code for the crematorium was for a 2km stretch of road, and going by foot I realised my folly and so had to run to make it time.

Re: We need to liberate the Postcode Address File

#269
Canada is in the same spot with the postal code data being for sale only.

Relatedly and famously, Canada Post sued [0] geocoder.ca [1] years ago because it made available a crowdsourced database of postal codes...

Years later, the case was settled [2] but yeah. You still have to pay for the "real" data.

[0] https://www.michaelgeist.ca/2012/04/canada-post-geocoder-sui...

[1] https://geocoder.ca/

[2] https://geocoder.ca/?sued=1 (nice url...)

Re: We need to liberate the Postcode Address File

#270
post #227

Earlier quoted context omitted.

Some larger retail stores in Germany ask you for your postcode during checkout, presumably to learn a bit about their customer base. I don't mind telling them mine, there are about 16K people with the same postcode. But I'm pretty sure I would not tell them if I was one of the two forest rangers in Reinhardswald. (And yes, I do pay cash whenever I can.)

Interesting, is the German postcode not used for transaction validation? I know the American payment processors definitely use ZIP codes for validation - see anecdote 1. That said, there are definitely situations where the payment processors don't require the ZIP code - see anecdote 2. Anecdote 1: When I worked in food service as a kid, I used card terminals that connected directly to a phone line. I remember a coupl…

> is the German postcode not used for transaction validation?

No. The only time I have ever been asked for a post code was when a petrol pump in the US demanded my zip code. I have no idea what it meant, I just put some random zip code for the general area I was in and it was accepted. I've never been asked for my post code in Europe; I can't speak for the whole of Europe though, just UK, Spain, Ireland, Portugal, France, Belgium, Netherlands, Italy, Germany, Poland, Denmark, Sweden, Norway.

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