🆕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.
Please note, the following attributes will not be populated within the OS ESG: Parent_UPRN and Multi_Occ_Count.
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.
Please see the 'Available formats' section in the OS ESG Overview for more information.
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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