upin verification

SPATIAL FRAMEWORK
FOR A TITLE
REGISTRATION
SYSTEM: UNIQUE
PARCEL IDENTIFIERS
AND CADASTRAL MAPS
TITLE REGISTRATION
• Based on parcels of land
• Transactions set out in simple
documents – reference to the land
parcel
• Registration of transactions is essential
to their validity
SPATIAL FRAMEWORK CADASTRE
• Unique parcel
identifiers – linking
documents and
maps
• Cadastral maps
depicting parcel
framework –
location, spatial
relationships
DESIRABLE UPIN FEATURES
1. Unique
2. Easy to remember
3. Easy to use
4. Permanent
5. Capable of being updated
6. Flexible (can be used for multiple
purposes)
DESIRABLE UPIN FEATURES
CONT’D
7. Ease and economy (introduction,
maintenance)
8. Able to support archiving , historical
record
9. Maintained by one authority
10. Independent
IDEAL UPIN QUALITIES
• Compatible with other agencies
• Preferably the same system
• Primary key to link databases
UPIN OPTIONS
Most common:
1. Cadastral administrative area, block, parcel.
2. Cadastral map, parcel
Others:
3. Title number
4. Street address
5. Tax/Utility number
6. Geocode
Less Desirable options:
7. Abuttals (i.e. ‘bounded in the north by…’)
8. Metes and bounds
9. Grantee/grantor index
UPIN EXAMPLES
•
•
•
•
•
•
Australia – lot/plan number e.g. 3/790349
Sweden- municipality or village, block, parcel
e.g. Haninge Svartso 3:49
Latvia – e.g. 01000030002,(cadastral territory
0100,cadastral group 003, parcel 0002)
England – administrative area, lot (e.g.
CS72510 for parcel 72510 in Cornshire)
Cambodia – e.g. 05070512-0104, (Province 05,
District 07, Commune 05, Village 12, lot 0104)
Thailand – various options (requires cross
indices) including:
–
–
–
lot/map
Title number
Adjudication number
SPATIAL FRAMEWORK CADASTRE
• Topological applications:
– Identification of parcel on the register
– Spatial framework for register – data
validation, verification
– Spatial query/access to data
• Spatial/metric applications:
–
–
–
–
Relocation of a boundary if necessary
Support subdivisions/consolidations
Calculation of parcel areas/offsets, etc.
Basis for Spatial Data Infrastructure (SDI)
EXAMPLES OF CADASTRES
Some cadastral systems:
• Registry map that precisely define parcel
boundaries (e.g. European cadastral
maps)
• General registry map with file plans for
each parcel prepared from this map (e.g.
England)
• Individual land parcel plans with or without
an index/chart/noting map (e.g. Australia,
Source: Simpson, 1976
or Thailand)
Ordinance Survey Map - UK
Cadastral Map - Thailand
Survey Plan - Thailand
Urban Photomap - Thailand
Cadastral Overlay - Thailand
Spatial Portal - NSW
DCDB – 33 Foothills Road
Deposited Plan 29894
SURVEY: Cost vs Precision
Accuracy (m)
10
1.0
0.01
0.001
0
5,000
10,000
15,000
20,000
Equipment Cost US$
Source: Dale and McLaughlin 1999
SURVEY OPTIONS
• Graphical
– Plane-table
– Square offset (optical square/cross staff)
– Imagery (unrectified, rectified, ortho)
– Large scale topographic maps
• Digital
– GPS (including RTK GPS)
– Electronic total-stations
– Digital photomaps (aerial/satellite, other
sensors)
PHILIPPINES – SNS REPORT
HIGH RESOLUTION SATELLITE
IMAGRY
Source: Y. V. N. Krishnamurthy, 2010
SPATIAL FRAMEWORK SUMMARY
• For registry cadastre completeness and
currency are more important than
accuracy
• Survey is typically a major cost
component (~50%) in both for
compilation and maintenance
• No country has adopted a full high
accuracy/cost approach in
implementing land administration
reform