Indi

ana

GIS

Con

fere

nce

2007

Tracking Parcel Genealogy –

A Parcel’s Family Tree

Brent MainzingerThe Sidwell Company

Indi

ana

GIS

Con

fere

nce

2007

The Life of a Parcel

• A parcel is born• A parcel has parents• A parcel has children• Parents can sometimes survive• Surviving parents can have more children• Parents can sometimes retire• Parents can die

Indi

ana

GIS

Con

fere

nce

2007

Parcel Actions

• Split/Divide• Combine/Merge• Retire• Unretire• Create New• Delete

Indi

ana

GIS

Con

fere

nce

2007

Documents Drive Transactions,

which Control Parcels

DeedsPlats

Split/DivideCombine/Merge

01-02-201-00401-04-201-005

Indi

ana

GIS

Con

fere

nce

2007

Your Parcel Number Matters

• Is it permanently associated with the legal description of a property?

• Is your parcel number geographically based?• Do you re-use parcel numbers?• Do you use survivable parents?• Do you retire or delete parcels?• Are non-real estate items assigned parcel

numbers

Indi

ana

GIS

Con

fere

nce

2007

What Parcel Genealogy Needs to Do…

Indi

ana

GIS

Con

fere

nce

2007

The transaction ties the parcels

together

Track Parent-Child Relationships

The transaction ties the parcels together

Tie documents to the transaction

Indi

ana

GIS

Con

fere

nce

2007

Searchable

Indi

ana

GIS

Con

fere

nce

2007

Associate Documents

Associate with Parcels• Surveys• Letters• Spreadsheets• Walk-throughs• etc

Associate with Transactions• Plats• Deeds• etc.

Indi

ana

GIS

Con

fere

nce

2007

Create Reports

Indi

ana

GIS

Con

fere

nce

2007

Store Data in ODBC Compliant

Data Sources

Indi

ana

GIS

Con

fere

nce

2007

ODBC Compliance is Important

Don’t put data into anything that you can’t get it out of !

Indi

ana

GIS

Con

fere

nce

2007

Indi

ana

GIS

Con

fere

nce

2007

The People Side

• Requires the discipline to not take short cuts

• Documents must be worked in the order that they are recorded

• Requires cooperation between departments

Indi

ana

GIS

Con

fere

nce

2007

Parcel feature archiving in ArcMap

Indi

ana

GIS

Con

fere

nce

2007

Geodatabase Feature Archiving

• Store born and retirement dates for parcel polygons

• Automatically store geography of retired parcels

• Spatially query parcels sharing geography over time

• Display map through time

Indi

ana

GIS

Con

fere

nce

2007

Requires a Versioned Geodatabase

Indi

ana

GIS

Con

fere

nce

2007

Feature class must be have

archiving enabled

Indi

ana

GIS

Con

fere

nce

2007

Parcel Archive Table

Born Date Retire Date

Indi

ana

GIS

Con

fere

nce

2007

Track Parcel Geometry

Indi

ana

GIS

Con

fere

nce

2007

Parcel Genealogy with document association