The District of Columbia

OwnerPt

OwnerPt

by DC Office of Tax and Revenue on 2012

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
Lineage / Processes

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

FGDC Content Standards for Digital Geospatial Metadata / FGDC-STD-001-1998 as of 20121011

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