NAVTEQ Parcels

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NAVTEQ Parcels

• August 2007

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What is a Parcel?

• Parcel A land record that defines the boundary
  of a piece of land. The basic administrative unit
  of local government.
• Parcels are most commonly produced for tax
  assessments. These tax maps are used for locating
  and describing properties that are linked to
  owners, tax bills, and other assessment
  information.
• Parcels typically represent a generalized
  portrayal of parcel locations and dimensions
  rather than a highly accurate representation of
  legal ownership.
• Parcel maps have generally had no federal or
  state oversight with their development so
  content, procedures, methods, and standards
  widely vary at the local level.

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NAVTEQ Parcels Quality and Value

• Coverage Our second quarter 2007 database has
  approximately 63 million parcels representing
  the most comprehensive packaged database of
  parcel information available today.
• Standardization Parcels are maintained by
  thousands of tax mapping authorities in the
  United States, each with disparate format,
  projection, and data models. NAVTEQ has built a
  standard format, structure, and projection and
  secured standard redistribution rights.
• Secured Usage Parcel sources have highly varied
  usage/distribution policies, by developing
  relationships with local governments, NAVTEQ has
  taken the time to understand and secure usage
  rights for our markets.
• Reliability All parcel data is qualified for
  data completeness and integrity.
• Product Growth NAVTEQ has a team dedicated to
  building our Parcel Boundaries. We add parcel
  coverage each month and we are surveying the
  market for the addition of value-adding
  attributes.

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NAVTEQ Parcels Quality Assurance Steps

• Re-projection All parcel files are reprojected
  for consistency.
• NAVTEQ centerline alignment All parcels are
  overlaid with NAVTEQ street centerlines for
  positional accuracy misaligned parcels are
  rejected.
• NAVTEQ APN and Address fields APN and Address
  fields examined for consistency and completeness.
  Frequently, sources provide sparse or poor
  quality address information in these cases we
  will not incorporate these Parcels into our data.
  Currently approximately 80 of NAVTEQ Parcel
  Boundaries have address information. NAVTEQ is
  taking measures to improve this addressing and
  expand the inclusion by employing innovative
  techniques.
• Ortho-Photo alignment Each parcel source
  undergoes a sampling procedure to check for
  alignment to ortho-photography misaligned
  parcels are not included in our product.
• Spatial Accuracy Rating The rating of location
  accuracy assigned to the parcel data which is
  calculated by taking measurements off the
  ortho-photograph and averaging the results

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Parcel Data Structure

• The structure is consistent for all NAVTEQ
  Parcel Data.
• The contents of the address field have not been
  standardized across counties. Address quality can
  vary based on wide-ranging standards across our
  local government sources.

FIELD NAME TYPE LENGTH DESCRIPTION
FIPSSTCO String 5 5-digit state/county fips code
STATE String 2 State abbreviation
COUNTY String 30 County name
CITY String 30 City name (if a parcel resides in a city or municipality)
ADDRESS String 70 Full physical address line of parcel
DT_SRC String 6 Date of the source data
DT_UPD String 6 Date of NAVTEQ parcel release
PARCEL_ID String 30 Parcel ID as designated by State, County or Municipality source
NT_PARCEL_ID String 40 NAVTEQ Parcel ID
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NAVTEQ Parcels - Release Notes (Metadata)
NAVTEQ Parcels are shipped with Metadata

• FIPS The county FIPS code.
• Sub-County ID The FIPS code for the collection
  unit if it is smaller than a county.
• Parcel Count The total amount of parcel records
  for that collection unit.
• Spatial Accuracy Rating The rating of location
  accuracy assigned to the parcel data which is
  calculated by taking measurements off the
  ortho-photograph and averaging the results.

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NAVTEQ Parcel Boundaries Uses and Benefits

• Internet Mapping
• Adds rich visual context to a map
• Real-estate searching and reporting
• Brings more meaning to locations

• Emergency Preparedness
• Estimate disaster losses
• Search and rescue support
• Destroyed property identification

• Enterprise Solutions
• Retail site selection
• Infrastructure planning
• Insurance risk exposure determination
• Regional planning

• Location Intelligent Analysis
• Urban growth prediction
• Site large development projects
• Assist property value verification
• Population analysis

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Parcel Boundaries Bring New Meaning to a Map -
San Diego, CA
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NAVTEQ Parcel Boundaries fit NAVTEQ Streets - San
Diego
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NAVTEQ Parcel Boundaries fit NAVTEQ Streets - San
Diego
Imagery Courtesy of DigitalGlobe
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Expanding the Attributes of NAVTEQ Parcel
Boundaries

• Each Parcel record includes a key identifier
  known as the APN this is the official PIN
  number of a property.
• This field can feasibly be linked with any other
  data that is joinable to this key field.
• Major title companies and MLS-based databases
  offer possibilities to add information such as
  ownership, valuation, zoning and home age to
  Parcel Boundaries.
• Examples include Fidelity National, First
  American, and DataQuick.
• Augmentation with secondary data sources cab
  greatly broaden the use cases and application
  possibilities of NAVTEQ Parcel Boundaries.
• Data disparities across counties could
  complicate a data join with NAVTEQ Parcel
  Boundaries.
• Currently NAVTEQ offers no warranty on joining
  third-party data it is possible but some
  assembly is required.

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Use Parcels to Proactively Identify Urban Growth
Parcel Boundaries can serve as an X-ray onto the
landscape for development prediction. Here,
parcels reveal that a municipality has divided an
undeveloped area for residential expansion.
Imagery Courtesy of DigitalGlobe
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Parcel Boundaries Indicate Land Use
Image 2002 Parcels 2006
Imagery Courtesy of DigitalGlobe
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Parcel Boundaries Indicate Land Use
Image 2004 Parcels 2006
Note Newer image now reflects newer development
Imagery Courtesy of DigitalGlobe
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Parcel Boundaries Enable More Accurate Risk
Assessment
Example Properties at Risk of Storm Surge.
Boundaries reveal partial or complete membership
to risk categories.
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Infrastructure Planning with Telecom for
NAVSTREETS
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Parcels in 3D, With ESRIs ArcGIS Explorer
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Parcel Boundaries Provide Rich Context to a Map
Parcel Boundaries in Google Earth. Teton, WY
Do not distribute without permission from Google
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Parcel Data for Geocoding Uses and Benefits

• Enable superior position accuracy and improved
  match rates
• Support your geocoding with household-level
  accuracy
• Increases confidence in destination selection
  and subsequent use of geocoding results (such as
  tax and risk determination)
• Reduce costs by decreasing false positives and
  the need for manual matches

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Enhance Address Locating with Parcel Data
1) Black dots show geocoded locations using
street addresses
2) Green squares show geocoded locations using
Parcels
3) Red line shows distance between the two
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Improve confidence when using your geocoding
results
Costal surge risk determined using a parcel-based
geocoded location. Applications like this
demanding great positional accuracy are a great
fit for NAVTEQ Parcel Data for Geocoding.
NAVTEQ Parcel Boundaries enhance the display of
these results.
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NAVTEQ Parcels Coverage Q2 2007
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Phased Development
Phase 1
Phase 2
Phase 3
Phase 4
Initial Release 50-60 Million Parcels
Add Attributes / Standardize Address Begin
Updates
Build Out Dataset Estimated 65-80 Million Parcels

Obtain remaining Parcels Reposition to
NAVTEQ Map
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Roadmap Vision