spatial framework for a title registration system: unique parcel identifiers and cadastral maps
DESCRIPTION
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 PresentationTRANSCRIPT
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SPATIAL FRAMEWORK FOR A TITLE REGISTRATION SYSTEM: UNIQUE PARCEL
IDENTIFIERS AND CADASTRAL MAPS
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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
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SPATIAL FRAMEWORK - CADASTRE
• Unique parcel identifiers – linking documents and maps
• Cadastral maps depicting parcel framework – location, spatial relationships
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DESIRABLE UPIN FEATURES
1. Unique2. Easy to remember3. Easy to use4. Permanent5. Capable of being updated6. Flexible (can be used for multiple
purposes)
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DESIRABLE UPIN FEATURES CONT’D
7. Ease and economy (introduction, maintenance)
8. Able to support archiving , historical record
9. Maintained by one authority10. Independent
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IDEAL UPIN QUALITIES
• Compatible with other agencies• Preferably the same system• Primary key to link databases
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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
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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
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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)
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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
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Ordinance Survey Map - UK
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Cadastral Map - Thailand
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Survey Plan - Thailand
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Urban Photomap - Thailand
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Cadastral Overlay - Thailand
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Spatial Portal - NSW
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DCDB – 33 Foothills Road
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Deposited Plan 29894
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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
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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)
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PHILIPPINES – SNS REPORT
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HIGH RESOLUTION SATELLITE IMAGRY
Source: Y. V. N. Krishnamurthy, 2010
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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