Using Maps For Spatial Records - Addressables and Non-Addressables

📌 BLPU Requirements

• Every BLPU (Basic Land and Property Unit) must have an addressable object name.

• This does not necessarily mean it must have a postal address.

• The BLPU structure, together with its related LPIs (Land and Property Identifiers) and the use of Primary and Secondary addressable objects, allows flexible recording for different types of BLPUs.

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🏠 Addressable Properties

• Every LPI must have a Primary Addressable Object Name (PAON).

• An LPI will normally have a postal address, but exceptions exist.

• To be considered an official address, a property must:

  1. Be accepted through the Street Naming and Numbering (SNN) process.

  2. Be associated with a street.

  3. Have a postal address.

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🌍 Land and Sites

• Some BLPUs may relate only to land, rather than a built structure. Examples include:

  • Brownfield sites (previously developed land).

  • Land awaiting development.

  • Defined areas within an active development site.

• Such land parcels are often best described on a map, but can also be identified using descriptive text within the LPI.

  • Example: “Site 100 metres south of 23 High Street”.

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🏗️ Non-Addressable Objects

• A BLPU can also represent non-postally addressable objects, such as:

  • Allotments

  • Bridges

  • Telephone boxes

⚠️ Exclusions: Certain objects (e.g., streetlights) are expressly excluded.

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🔑 Key Differences

• Non-addressable objects:

  • Must be fully defined by the LLPG custodian.

• Postally-addressable properties:

  • Automatically receive official address information from the SNN process.

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📖 Reference: See Data Entry Conventions (DEC) for detailed definitions and rules.