About the National Land and Property Gazetteer
The NLPG is the authoritative, national address list that provides unique identification of land and property and conforms to BS 7666 (2006). Local authorities in England and Wales have a statutory responsibility for street naming and numbering. They update the NLPG on a continual basis, enabling daily updates to be available to users.
The NLPG was initiated in 1999 to become the master address dataset for England and Wales. It is the central hub for the 348 address creating local authorities' Local Land and Property Gazetteers (LLPGs).
All local authorities create their LLPGs using common data entry conventions, based upon the national standard BS7666:2006, and submit their LLPGs to the national hub, managed by Intelligent Addressing. The creation and maintenance processes are well-tested, combining local knowledge with central validation.
The data is created and maintained at local level to an agreed methodology under the LLPG data entry conventions document (DEC-NLPG 2006), and passed to the hub which tests its structural conformance to the agreed implementation of BS7666 (2006) Parts 1 & 2. The hub also checks the quality through a regular data audit against third party national address datasets such as the Valuation Office Agency's Council Tax and Non Domestic Rates lists of addresses.
Each record has a Unique Property Reference Number (UPRN) which provides a reference key to join related address records across different datasets. Even if a property is demolished, the UPRN can never be reused and retains its historical information.
Read More
|
The property lifecycle
Local authorities legal responsibilities place them at the source of the property lifecycle for addressable objects. Activities such as street naming and numbering, planning applications, building and environmental control, licensing, electoral registration, council tax and non-domestic ratings repeatedly bring local authorities in contact with land and property enabling documentation of its lifecycle.
Throughout its lifecycle, information on the address of a property can change. This may be due to a change of name, a sub-division or aggregation of an address within a building, change of use, such as from single occupancy to multiple occupancy, or the eventual demolition of the property. All of these historic, alias and provisional addresses are recorded against the same UPRN.
Information on the timing and nature of the change will be known first by the local authority as part of their normal processes before being passed onto any other third party such as Royal Mail, which will add a postcode if it delivers mail to the address.
Read More
|
Definitive address data set of choice
Maintaining large address datasets to a high standard requires specialist expertise and local knowledge. The NLPG is the only national dataset to have direct access to over 750 addressing experts located throughout England and Wales dedicated to the task. An address dataset, developed and maintained at source by business users of the data has the highest level of currency and completeness possible.
The NLPG has:
- a consistent format underpinned by BS7666 (2006) and process standards
- unique and persistent identifiers for land and property, the UPRN
- change only updates each working day
- mailing and geographic addresses
- sub-divisions of addressable objects, for example flats and units within residential, commercial or industrial premises, buildings on educational and hospital campuses
- non-postally addressed objects such as bus shelters, war memorials, radio masts, advertising hoardings, car parks, public buildings such as halls, recreation facilities, churches, industrial units, and open spaces eg parks
- multiple address references for each property including:
- the official address
- alternative addresses
- historic addresses
- proposed addresses
- proposed developments
- classifications for each address including commercial, residential, land, military and objects of interest
- a dual language version in Wales
- geographical references to enable entities to be linked to topographic and digital mapping and aerial imagery
- Street BLPU records where road traffic accidents or anti-social disturbances might occur
- a feedback facility to the NLPG hub. Enabling address variations and additions to be considered for inclusion in the NLPG.
The NLPG delivers change intelligence to the address base across England and Wales and facilitates partnership working with local councils and the fire services who are already widely using NLPG data.
Read More
|
