OwnerPt

Keywords
About: Ownership, Real Property, Cadastral
Taking place at: Washington, D.C., District of Columbia, DC, DC GIS, DCGIS

Abstract

Property Owner Points. This dataset contains points that represent the approximate location of real property lots within the District of Columbia. Each property point is generated based on a corresponding record maintained within the Office of Tax and Revenue (OTR) Real Property Tax Administration's (RPTA) real property database. Each point contains the full attribution of database fields derived from ITS public release extract.

The initial data conversion effort was begun in 1997 as a means to provide RPTA with a digital mapping system which could be maintained to reflect ongoing changes to property lots and ownership.

The initial step was to scan RPTA tax square maps from aperture cards at an effective paper resolution of 400 DPI. The resulting images were then georeferenced to DC's 0.2-meter resolution 1995 digital orthophotos. During the georeferencing process, the images were not warped; they were simply scaled and rotated to best fit the orthophotos.

The DC tax assessor provided a database of active tax accounts which were placed interactively by an operator using the georeferenced square image and the orthophoto. Centroids were placed on the primary structure visible in the orthophoto within the raster property polygon. The placement was performed within ArcView 3.2 using a customized data production application. Accounts which could not be placed in the first pass were then reviewed by another operator to attempt to find their correct location. The placed points were QC'd through a spatial overlay with the square index to assure a match between the "square" field value within the property database and the actual square polygon into which the point was placed. Spot checking was then performed to confirm that the centroids fell within the correct raster lot. The centroids were delivered to OTR as a single citywide AutoCAD DWG file. Attribute features with square, suffix, and lot numbers (SSLs) were included as an AutoCAD block.

All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.

Purpose

This dataset is used by the DC Real Property Tax Administration (RPTA) to facilitate analysis and mapping of real property features within the District of Columbia. Links to additional databases are enabled through the Square, Suffix, Lot (SSL) field of the OwnerPt database. In conjunction with scanned tax maps, the attributed property points provide a means to locate, map, and analyze real property lots within the District.

Access constraints

Contact OCTO GIS. Any data obtained outside of OCTO GIS are unauthorized copies.

Use constraints

Data cannot be redistributed in any manner without written authorization. OCTO makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Point of contact

Steven Hathaway
in Office of Tax and Revenue, Real Property Tax Administration

941 N Capitol St, 4th Floor
Washington DC, 20002, USA

phone: 202-442-6662
hours: 8:30am - 5:30pm

Credits

DC Office of Tax and Revenue

Data accuracy

Accuracy
Data believed to be complete and accurate, subject to change. Digital version compared with original source data for accuracy and completeness. Validated by source and/or responsible agency

Logical consistency
Data believed to be complete and accurate, subject to change. Digital version compared with original source data for accuracy and completeness. Validated by source and/or responsible agency.

Horizontal positional accuracy
In process of validation by source and/or responsible agency.

Vertical positional accuracy
N/A

Lineage / Sources

• Public Release
  Database, Attributes
  Public Release/Extract
  by DC Office of Tax and Revenue, 2005
• Property Centroids
  Cad, location
  Property Centroids
  by DC Office of Tax and Revenue, 2005

Distribution

Most DC GIS datasets can be downloaded from "http://dcgis.dc.gov" on the data center page. Orders can also be made by contacting OCTO GIS at "dcgis@dc.gov", especially for datasets not available for download.

Distribution liability
OCTO makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred, with respect to the information or data furnished herein. Subject to terms and conditions of the Memorandum of Agreement. Memorandum of Agreement must have authorized signature.

Distributed by
GIS Data Coordinator
in OCTO

441 4th St NW Suite 930 South
Washington DC, 20001, USA

fax: 202-727-5660
hours: 8:30am - 5pm

Entity

OwnerPt

Attributes

• FID / ESRI
  Internal feature number.
• OBJECTID_1 / ESRI
  Internal feature number.
• Shape / ESRI
  Feature geometry.
• SSL
  Square, Suffix and Lot of property
• IDINTERNAL
  
• SQUARE
  Square of property
• STATUS
  
• INTOSQR
  
• INTOLOTS
  
• OUTOFSQR
  
• OUTOFLOTS
  
• OBJECTID
  
• RES
  
• LOTTYPE
  
• SQUARE_
  
• SUFFIX_
  
• LOT_
  
• SUFFIX
  Suffix of property
• LOT
  Lot of Property
• ARN
  Assessor ID Number
• ASRNAME
  Name of Property Assessor
• PROPTYPE
  Type of property, obtained from use code
• TRIGROUP
  Triennial Tax Assessment Group Assignment
• USECODE
  Property Use Code
• LANDAREA
  Square footage of property from the recorded deed
• PRMSWARD
  Premise Ward
• PREMISEADD
  Property address string excluding city and zip code
• NBHD
  Assessor's Neighborhood Code
• NBHDNAME
  Neighborhood Name
• SUBNBHD
  Sub Neighborhood Name
• UNITNUMBER
  Unit number, typically associated with condominiums
• OWNERNAME
  Property Owner's Name
• CAREOFNAME
  Name to whom the tax bill is sent
• ADDRESS1
  Tax billing address part 1
• ADDRESS2
  Tax billing address part 2
• CITYSTZIP
  City, State, and Zip
• BASELAND
  Base Year Land Value
• BASEBUILD
  Base Year Building Value
• OLDLAND
  Prior Appraised Land value
• OLDIMPR
  Prior Appraised Value of Improvement
• OLDTOTAL
  Total Prior Appraised Value of Land and Improvements
• NEWLAND
  Current appraised land value
• NEWIMPR
  Current appraised value of improvements such as buildings
• NEWTOTAL
  Total Current appraised value of land and improvements
• PHASELAND
  Current Phase-In Land Assessment
• PHASEBUILD
  Current Phase-In Building Assessment
• PHASECYCLE
  Phase Cycle Number
• PARTPART
  Flag to indicate lot has two tax types
• VACLNDUSE
  Flag for vacant property
• LOWNUMBER
  Base House Number of the property address
• HIGHNUMBER
  Ending House number of the property if it includes multiple addresses
• STREETNAME
  Street name portion of the property address
• STREETCODE
  Street name standardization code: DPW code
• QDRNTNAME
  Quadrant name spelled out: NE,NW,SE or SW
• DELCODE
  Flag for inactive records
• HSTDCODE
  Homestead and Senior Code
• CLASSTYPE
  Tax type code of the property
• TAXRATE
  Tax rate for the property
• MIXEDUSE
  Mixed Use indicator
• MIX1TXTYPE
  Tax type one, also displays if there are any types of exemptions
• MIX1CLASS
  Tax class of first mix
• MIX1RATE
  Tax rate for First Mix
• MIX1LNDPCT
  Percentage of the land affected by the first use type
• MIX1LNDVAL
  Value of the land affected by the first use type
• MIX1BLDPCT
  Percentage of the improvements affected by the first use code
• MIX1BLDVAL
  Value of the improvements affected by the first use code
• MIX2TXTYPE
  If mixed use, the second tax type of the mixed use, otherwise blank
• MIX2CLASS
  If mixed use, the second tax class of the mixed use, otherwise blank
• MIX2RATE
  If mixed use, the second tax rate of the mixed use, otherwise blank
• MIX2LNDPCT
  If mixed use, the percentage of land affected by the second mixed use, otherwise blank
• MIX2LNDVAL
  mixed use, the value of land affected by the second mixed use, otherwise blank
• MIX2BLDPCT
  If mixed use, the percentage of the improvements affected by the second mixed use, otherwise blank
• MIX2BLDVAL
  If mixed use, the value of the improvements affected by the second mixed use, otherwise blank
• OWNOCCT
  # of occupied co-op units
• COOPUNITS
  # of available co-op units
• PCHILDCODE
  Use code of child property
• ABTLOTCODE
  SSL of the abutting property
• SALEPRICE
  Most recent property sale price
• SALEDATE
  Most recent property sale date
• INSTNO
  Instrument number for last property or ownership modification
• ACCEPTCODE
  Property sale acceptance code
• SALETYPE
  Type of property sale (single or multiple lot, etc.)
• DEEDDATE
  Date of Deed
• MORTGAGECO
  Mortgage Key Number
• ASSESSMENT
  Current Assessed Value Total: Total of land and building
• ANNUALTAX
  Current amount of annual tax
• DUEDATE1
  Date of first due date
• AMTDUE1
  Bill amount due at first due date
• DUEDATE2
  Second due date for bill
• AMTDUE2
  Bill amount due at second due date
• DUEDATE3
  Third due date for bill
• AMTDUE3
  Bill amount due at third due date
• TOTDUEAMT
  Total of All Liabilities: All Year
• TOTCOLAMT
  Total of All Collections: All Year
• TOTBALAMT
  Total Balance for Property: All Year
• EXTRACTDAT
  Extract Date of Public Release
• DEEDSTATUS
  Deed Status for current year
• DCN
  DCN Number from Tax Bill
• SCANLINE
  Bank Scanline (Check Digit+SSL+DCN+Due Amount)
• CAPCURR
  Cap assessment for Current year
• CAPPROP
  Cap assessment for Proposed year
• REASONCD
  Reason property was updated
• TXSALEDESC
  Description of tax sale type
• CLASS3
  Flag for Class 3 Exception
• CLASS3EX
  New tax class if class 3 exception exists
• CY1YEAR
  Year Description
• CY1TXSALE
  Tax sale flag for first half current year
• CY1TAX
  Tax for first half current year
• CY1PEN
  Penalty for first half current year
• CY1INT
  Interest for first half current year
• CY1FEE
  Fees for first half current year
• CY1TOTDUE
  Total due for first half current year
• CY1COLL
  Collections for first half current year
• CY1BAL
  Balance for first half current year
• CY1CR
  
• CY2YEAR
  Year Description
• CY2TXSALE
  Tax sale flag for second half current year
• CY2TAX
  Tax for second half current year
• CY2PEN
  Penalty for second half current year
• CY2INT
  Interest for second half current year
• CY2FEE
  Fees for second half current year
• CY2TOTDUE
  Total due for second half current year
• CY2COLL
  Collections for second half current year
• CY2BAL
  Balance for second half current year
• CY2CR
  
• PY1YEAR
  Year Description
• PY1TXSALE
  Tax sale flag for prior year 1
• PY1TAX
  Tax for prior year 1
• PY1PEN
  Penalty for prior year 1
• PY1INT
  Interest for prior year 1
• PY1FEE
  Fees for prior year 1
• PY1TOTDUE
  Total due for prior year 1
• PY1COLL
  Collections for prior year 1
• PY1BAL
  Balance for prior year 1
• PY1CR
  
• PY2YEAR
  Year Description
• PY2TXSALE
  Tax sale flag for prior year 2
• PY2TAX
  Tax for prior year 2
• PY2PEN
  Penalty for prior year 2
• PY2INT
  Interest for prior year 2
• PY2FEE
  Fees for prior year 2
• PY2TOTDUE
  Total due for prior year 2
• PY2COLL
  Collections for prior year 2
• PY2BAL
  Balance for prior year 2
• PY2CR
  
• PY3YEAR
  Year Description
• PY3TXSALE
  Tax sale flag for prior year 3
• PY3TAX
  Tax for prior year 3
• PY3PEN
  Penalty for prior year 3
• PY3INT
  Interest for prior year 3
• PY3FEE
  Fees for prior year 3
• PY3TOTDUE
  Total due for prior year 3
• PY3COLL
  Collections for prior year 3
• PY3BAL
  Balance for prior year 3
• PY3CR
  
• PY4YEAR
  Year Description
• PY4TXSALE
  Tax sale flag for prior year 4
• PY4TAX
  Tax for prior year 4
• PY4PEN
  Penalty for prior year 4
• PY4INT
  Interest for prior year 4
• PY4FEE
  Fees for prior year 4
• PY4TOTDUE
  Total due for prior year 4
• PY4COLL
  Collections for prior year 4
• PY4BAL
  Balance for prior year 4
• PY4CR
  
• PY5YEAR
  Year Description
• PY5TXSALE
  Tax sale flag for prior year 5
• PY5TAX
  Tax for prior year 5
• PY5PEN
  Penalty for prior year 5
• PY5INT
  Interest for prior year 5
• PY5FEE
  Fees for prior year 5
• PY5TOTDUE
  Total due for prior year 5
• PY5COLL
  Collections for prior year 5
• PY5BAL
  Balance for prior year 5
• PY5CR
  
• PY6YEAR
  Year Description
• PY6TXSALE
  Tax sale flag for prior year 6
• PY6TAX
  Tax for prior year 6
• PY6PEN
  Penalty for prior year 6
• PY6INT
  Interest for prior year 6
• PY6FEE
  Fees for prior year 6
• PY6TOTDUE
  Collections for prior year 6
• PY6COLL
  Collections for prior year 6
• PY6BAL
  Balance for prior year 6
• PY6CR
  
• PY7YEAR
  Year Description
• PY7TXSALE
  Tax sale flag for prior year 7
• PY7TAX
  Tax for prior year 7
• PY7PEN
  Penalty for prior year 7
• PY7INT
  Interest for prior year 7
• PY7FEE
  Fees for prior year 7
• PY7TOTDUE
  Total due for prior year 7
• PY7COLL
  Collections for prior year 7
• PY7BAL
  Balance for prior year 7
• PY7CR
  
• PY8YEAR
  Year Description
• PY8TXSALE
  Tax sale flag for prior year 8
• PY8TAX
  Tax for prior year 8
• PY8PEN
  Penalty for prior year 8
• PY8INT
  Interest for prior year 8
• PY8FEE
  Fees for prior year 8
• PY8TOTDUE
  Total due for prior year 8
• PY8COLL
  Collections for prior year 8
• PY8BAL
  Balance for prior year 8
• PY8CR
  
• PY9YEAR
  Year Description
• PY9TXSALE
  Tax sale flag for prior year 9
• PY9TAX
  Tax for prior year 9
• PY9PEN
  Penalty for prior year 9
• PY9INT
  Interest for prior year 9
• PY9FEE
  Fees for prior year 9
• PY9TOTDUE
  Total due for prior year 9
• PY9COLL
  Collections for prior year 9
• PY9BAL
  Balance for prior year 9
• PY9CR
  
• PY10YEAR
  Year Description
• PY10TXSALE
  Tax sale flag for prior year 10
• PY10TAX
  Tax for prior year 10
• PY10PEN
  Penalty for prior year 10
• PY10INT
  Interest for prior year 10
• PY10FEE
  Fees for prior year 10
• PY10TOTDUE
  Total due for prior year 10
• PY10COLL
  Collections for prior year 10
• PY10BAL
  Balance for prior year 10
• PY10CR
  
• LASTPAYDT
  Date of last payment received for the property
• OWNNAME2
  Name of second primary owner
• DEEDS
  
• X_COORD
  X Coordinate of parcel centroid
• Y_COORD
  Y Coordinate of parcel centroid

Metadata

Provided by
GIS Data Coordinator
in OCTO

441 4th St NW Suite 930 South
Washington DC, 20001, USA

phone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.
fax: 202-727-5660
hours: 8:30am - 5pm