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In Britain people can license the Ordnance Survey's AddressBase product, which provides a list of almost all the country's addresses, with good building location accuracy even for remote country buildings. This is obviously useful for address suggestion and geocoding applications!

Like all geodata products it's got some errors and omissions, but it's generally good (if expensive to license)

I'd like to broaden my horizon beyond just the UK. What's the best data available for France, and how good is it?

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Welcome to GIS SE! Unfortunately, I think your question may be too broad for our Q&A format so I think you should edit it to perhaps focus on just the country that is most important to you first. –  PolyGeo Dec 2 '13 at 2:32
    
Just to help out - avoid Australia! The national address file (G-NAF) is fiendishly expensive - even for the tertiary education sector it's a premium charged for product. –  Andrew Tice Dec 2 '13 at 2:57
    
yards is imperial - metres are metric based on the Ordnance Survey Grid. –  Mapperz Dec 2 '13 at 3:19
    
UK (England, Scotland, Wales +Northern Ireland) OS is only GB (England, Scotland, Wales) –  Mapperz Dec 2 '13 at 3:38
    
@PolyGeo OK. Is it bad form to submit several similar questions? If it is permitted, should there be a certain delay between posts? –  GeoDave Dec 2 '13 at 8:27

1 Answer 1

up vote 3 down vote accepted

IGN France has a good equivalent the Ordnance Survey MasterMap formally AddressPoint now Address Layer 2 database. http://www.ordnancesurvey.co.uk/business-and-government/products/address-layer-2.html

based from many years of working very closely with OS addressing, it is in conjunction with Royal Mail (privatised in October 2013). Accuracy, it is not 100% more 92%-95% and with 28 million residential and commercial properties that leaves quite a number of incorrect locations. GB coverage cost with MasterMap ITN and Topolgraphy layers leads into many £10,000's)

bdaddresse:

http://professionnels.ign.fr/bdadresse

For European coverage viaMichelin have a good commercial product.

http://business.viamichelin.com/

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