BLPU (Type 21 Record)
The Basic Land and Property Unit (BLPU) Feature Type is a real-world object that is an area of land, property or structure of fixed location, having uniform occupation, ownership or function.
Temporal filtering
The earliest date on which you can request a one-off snapshot of a date in the past for data in this feature type is 27 March 2024.
Feature type attributes
The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.
fid
A non-persistent integer which is autogenerated and is required within the OGC GeoPackage format.
Attribute Name: fid (GKPG), Not provided (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Nullable: false
Data Schema Version: 1.0
Record ID
Identifies this record as a BLPU Record (type 21).
Attribute Name: Not provided (GKPG), RECORD_IDENTIFIER (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 2
Nullable: false
Data Schema Version: 1.0
Change type
The type of record change.
Attribute Name: change_type (GKPG), CHANGE_TYPE (CSV)
Code List Name: ChangeTypeCode
Max Length: 1
Nullable: false
Data Schema Version: 1.0
Processing order
The order in which the records were processed in to create the data supply.
Attribute Name: Not provided (GKPG), PRO_ORDER (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 16
Nullable: false
Data Schema Version: 1.0
UPRN
Unique Property Reference Number (UPRN) assigned by Ordnance Survey.
Attribute Name: uprn (GKPG), UPRN (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 12
Nullable: false
Data Schema Version: 1.0
Logical status
Logical status of this record as given by Ordnance Survey. This attribute shows whether the record is currently live or historic.
Attribute Name: logical_status (GKPG), LOGICAL_STATUS (CSV)
Code List Name: LogicalStatusCode
Max Length: 1
Nullable: false
Data Schema Version: 1.0
BLPU state
A code identifying the current state of the BLPU.
Attribute Name: blpu_state_date (GPKG), BLPU_STATE_DATE (CSV)
Code List Name: BLPUStateCode
Max Length: 1
Nullable: true
Data Schema Version: 1.0
BLPU state date
Date at which the BLPU achieved its current state as defined in the BLPU State field.
Attribute Name: blpu_state_date (GKPG), BLPU_STATE_DATE (CSV)
Condition: BLPU State Date must be present if BLPU State is present.
Data Types: Date (GKPG), Date (CSV)
Nullable: true
Data Schema Version: 1.0
Parent UPRN
UPRN of the parent Record if a parent-child relationship exists.
Attribute Name: parent_uprn (GKPG), PARENT_UPRN (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 12
Nullable: true
Data Schema Version: 1.0
X coordinates
A value in metres defining the x location in accordance with the British National Grid.
Attribute Name: x_coordinate (GKPG) , X_COORDINATE (CSV)
Data Types: Double (GKPG), Real (CSV)
Precision: X_COORDINATE 8
Scale: 2
Nullable: false
Data Schema Version: 1.0
Y coordinates
A value in metres defining the y location in accordance with the British National Grid.
Attribute Name: y_coordinate (GKPG) , Y_COORDINATE (CSV)
Data Types: Double (GKPG), Real (CSV)
Precision: Y_COORDINATE 9
Scale: 2
Nullable: false
Data Schema Version: 1.0
Latitude location
A value defining the Latitude location in accordance with the ETRS89 coordinate reference system.
Attribute Name: latitude (GKPG), LATITUDE (CSV)
Data Types: Double (GKPG), Real (CSV)
Precision: LATITUDE 9
Scale: 7
Nullable: false
Data Schema Version: 1.0
Longitude location
A value defining the Longitude location in accordance with the ETRS89 coordinate reference system.
Attribute Name: longitude (GKPG), LONGITUDE (CSV)
Data Types: Double (GKPG), Real (CSV)
Precision: LONGITUDE 8
Scale: 7
Nullable: false
Data Schema Version: 1.0
RPC
Representative Point Code. This describes the accuracy of the coordinate that has been allocated to the BLPU as indicated by Ordnance Survey.
Attribute Name: rpc (GKPG), RPC (CSV)
Code List Name: RPCCode
Max Length: 1
Nullable: false
Data Schema Version: 1.0
Local custodian ID
Unique identifier of the authority responsible for the maintenance of this record.
Attribute Name: local_custodian_code (GKPG), LOCAL_CUSTODIAN_CODE (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 4
Nullable: false
Data Schema Version: 1.0
Start date
The date on which the record was inserted into the database.
Attribute Name: start_date (GKPG), START_DATE (CSV)
Data Types: Date (GKPG), Date (CSV)
Nullable: false
Data Schema Version: 1.0
End date
The date on which the record was closed in the database.
Attribute Name: end_date (GKPG), END_Date (CSV)
Data Types: Date (GKPG), Date (CSV)
Nullable: true
Data Schema Version: 1.0
Last update date
The date on which any of the attributes on this record were last changed.
Attribute Name: last_update_date (GKPG), LAST_UPDATE_DATE (CSV)
Data Types: Date (GKPG), Date (CSV)
Nullable: false
Data Schema Version: 1.0
Entry date
The date on which this record was inserted into the database.
Attribute Name: entry_date (GKPG), ENTRY_DATE (CSV)
Data Types: Date (GKPG), Date (CSV)
Nullable: false
Data Schema Version: 1.0
Multi-Occupation count
A count of all of the child UPRNs for this record where a parent-child relationship exists.
Attribute Name: multi_occ_count (GKPG), MULTI_OCC_COUNT (CSV)
Data Types: Integer (GKPG), Integer (CSV)
Max Length: 4
Nullable: false
Data Schema Version: 1.0
Addressbase postal
This field will be populated with ‘N’ within the OS ESG; all the BasicLandPropertyUnit features are considered as 'Not a postal address'.
Attribute Name: addressbase_postal (GKPG), ADDRESSBASE_POSTAL (CSV)
Code List Name: AddressbasePostalCode
Max Length: 1
Nullable: false
Data Schema Version: 1.0
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