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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. - PowerPoint PPT Presentation
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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. Unique2. Easy to remember3. Easy to use4. Permanent5. Capable of being updated6. 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 authority10. Independent
IDEAL UPIN QUALITIES
• Compatible with other agencies• Preferably the same system• Primary key to link databases
UPIN OPTIONSMost common:1. Cadastral administrative area, block, parcel.2. Cadastral map, parcel
Others:3. Title number4. Street address5. Tax/Utility number6. Geocode
Less Desirable options:7. Abuttals (i.e. ‘bounded in the north by…’)8. Metes and bounds9. 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, or Thailand) Source: Simpson, 1976
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
10
1.0
0.01
0.001
0 5,000 10,000 15,000 20,000
Equipment Cost US$
Acc
urac
y (m
)
Source: Dale and McLaughlin 1999
SURVEY: Cost vs Precision
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