Ollivier & Company

What is a property?What isn’t a property?Landonline databasesExamples and

discussion

Parcels? 2,308,194Title? 3,352,999Assessment? ~2.33 MOwner? 4,873,324Address? 1,467,005Property ID?

Is it defined by:

What is a property?

What is not a property?

Vested roadsStatutory reservesCrown landSeabed, lake and riverbedUnknown appellationUntitled land

Parcel as a property key?Original purpose…Ambiguous

appellationUnit plans not mappedMultiple parcels for

large propertiesUndivided sharesParcels do not have an

address

Title as a property key?

Rating Act unit (almost) Not all parcels “titled”Boundaries not mappedUnit titles not locatableNot in valuation rollProperties can have

multiple titlesMulti-title asssessments

Assessment as property key?Spatially based rolls Not all properties

assessedPart properties in different

assessmentUnrateable properties

ignoredNo formal link to parcels0089000200

LOT 1 DP 50683 LOT 1 DP 59262 LOTS 1 2 DP 74387 LOT 1 DP 102734 ALLOTS M61 S61 SM61 NE61 S62 77 78 97 PT ALLOTS M42 S42 AHUROA PSH ALLOT 134A PT ALLOTSM158 N158 164 165A 165B 266 268 E165 W165 415 MA HURANGI PSH ALLOTS SW30 85 128-134 KOURAWHERO PSH ALLOTS NE45 SW45 46-48 51-52 PT ALLOT 53 ALLOTS 1 45- 148 SO 53558 ALLOT 422 SO 53562 HOTEO PSH BLKS I II V VI X XI MAHURANGI SD BLK VII TAUHOA SD-TN A-ALLOTS 86 92 96 HOTEO PSH PT SUBJ TO OIL & GAS ESMT ONSO 57374 & SO 57375 ALLOT 93 HOTEO PSH ALLOT S E21 21A E22 W22 PT ALLOTS E20 W31 N32 KOURAWHERO PSH PT ALLOT 93 KOURAWHERO PSH-SUBJ TO WATER SUPP LY ESMT

Address as a property key? Well known to owners No property address (~10%) Road names, numbers

change Alternate addresses occur No defined format Confused with postal Addresses are reused Only a linear reference “Parcels do not have…”

Owner as a property key?Customer focus (!)Multiple ownersOwners own

multiple properties (HCNZ)

Owners change but title/parcel does not

Corporate ownersOwner not Occupier

Property-ID as a property key?

Internal unique keyNo external referenceNot a legal referenceFinancial account biasManual maintenance

of foreign keys Inadequate data

model for GIS

Ideal Property ArchitectureFully integrated with

GISSpatial property

modelDirect editing of

property attributes with graphics

Integrated web access to attributes and maps

In practice councils have separate applications

Constraints with dual databases

Version upgradesCommon business

rulesReplication for

performance and simplified security

Synchronisation issues & editing

GIS - LISLocation of all propertiesBoundary definitionsRelations for many-to-

manySupport council activitiesConsents are on parcelsA map-in-the-app http server for

accessibility

Parcel

ppr

Owners

Estate

Stat Acts

lgp

afpsap

etsValuation

Appellation

Plan

ct RelationTableCorax match

X

LandonlineSimplified National Database Property Relationships

Legality

DVR

RatesTitle

Survey

Road Cl Address

Titles

Maori, Other

Units Property?

CRS - digital cadastre Replaces paper survey plans High urban accuracy Linked to Titles & Owners Surveyors have online access BDE - bulk supply for others Coordinates in lat/long-160 NZGD 2000 datum

Landonline is the survey database

Incremental updates (yet)

Links from parcels to road names or addresses

Address ranges on centrelines

LINZ Core Records System does not have :

Links to district valuation rolls

Mailing addresses

Occupier or ratepayer names

Survey plans and datesTitles and dates Address pointsRoad centreline namesStrata titles and Unit

PlansTitle Owner namesSurvey accuracy codes

LINZ Core Records System does have :

Authoritative title, survey and ownership

CoraxData supply - not an

application or designSupplied as cleaned

topological featuresPlus related tables to

support better modelSource BDE is very

large, 24 Gigabytes

Cadastral Parcels

Everything is a Parcel

Coordinate upgrading 3,646,142 new end markers (emf) 1,206,211 NZGD2000 survey marks 2,308,194 parcels total 40% of parcels in NZ will be exact

Label ready fieldsFeature codesEMF pointsSeparated parcel layersSeparated transport layersParcel polygons and linesGeocoded titles and

ownersOpen format

Extra processing in Corax provides :

Further information:LINZ Introduction to bulk data v 7

(pdf) LINZ data dictionary (pdf)Corax_intro.htm on CDROMSample projects ArcView 3, ArcMap