Parcels of Loudoun County, VA

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Loudoun County, Virginia, Office of Mapping and Geographic Information (OMAGI)
Publication_Date: now
Title: Parcels of Loudoun County, VA
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: see distribution information
Description:
Abstract:
This data layer contains all parcel boundaries for Loudoun County, VA. A parcel is a tract or plot of land surveyed and defined by legal ownership. Data were compiled from plats and deeds recorded at the Clerk of the Court and from historic tax maps. Source material was digitized or the coordinates were entered into the database via ARC/INFO Coordinate Geometry (COGO). Digital data from engineering companies has also been incorporated for newer subdivisions. A MCPI number is used to identify each parcel, which is a 9 digit unique parcel ID that is a combination of: MAP, CELL, and PARCEL. MAP: 3 digit map number (001-701) corresponding with map tile index. CELL: 2 digit map grid location of parcel center; the grid is comprised of 1000 by 1000 ft grid cells numbered as rows and columns (Columns numbered > 5 6 7 8 9 0; Rows numbered > 1 2 3 4). PARCEL: 4 digit location of polygon center based on the 1983 Virginia State Plane coordinate grid where an easting and northing measurement is taken. Horizontal Datum: NAD83 HARN, SPCS VA North, FIPS Zone 4501, US Survey Feet Vertical Datum (if applicable): NAVD88. The MAP, CELL, and PARCEL values of a parcel do not change when a parcel is altered by a boundary line adjustment or becomes residue from a subdivision. The MAP, CELL, and PARCEL values may therefore be inconsistent with the location of polygon center. MAP, CELL, and PARCEL values have been manually altered for some parcels to agree with other databases; as a result, not all parcels can be located by the MAP, CELL, and PARCEL values.
Purpose:
Parcels are used to support a variety of services including assessment, permitting, subdivision review, planning, zoning, and economic development. Parcel data were initially developed to replace existing tax maps. As a result, there are parcel polygons digitized from tax maps that do not represent land parcels but are taxable entities such as leaseholds or easements.
Supplemental_Information:
Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88 HARN), US Survey foot units.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Daily
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -77.963439
East_Bounding_Coordinate: -77.323976
North_Bounding_Coordinate: 39.326230
South_Bounding_Coordinate: 38.844263
Keywords:
Theme:
Theme_Keyword_Thesaurus: none; employee generated
Theme_Keyword: property
Theme_Keyword: parcels
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: location
Theme_Keyword: society
Theme_Keyword: boundaries
Place:
Place_Keyword_Thesaurus: none; employee generated
Place_Keyword: Virginia
Place_Keyword: County
Place_Keyword: Loudoun
Access_Constraints: None
Use_Constraints:
These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Contact_Position: Parcel Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: MS 65
Address: 1 Harrison Street SE, 2nd Floor
City: Leesburg
State_or_Province: VA
Postal_Code: 20175
Country: US
Contact_Voice_Telephone: (703)771-5778
Contact_Facsimile_Telephone: (703)771-5075
Contact_Electronic_Mail_Address: mapping@loudoun.gov
Hours_of_Service: 8:00-4:30 EST, M-F
Native_Data_Set_Environment:
Microsoft Windows Server 2008 Version 6.0 (Build 6002) Service Pack 2; ESRI ArcGIS 10.0.5.4400
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Retention of attribute accuracy throughout the coverage to geodatabase feature class coversion process was ensured by a QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have, on a record by record basis, identical attribution when comparing all concatenated fields to all the user-defined attribution.
Logical_Consistency_Report: Topologically clean
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Retention of coordinate accuracy throughout the coverage to geodatabase feature class conversion process was ensured by a QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have the same record total, and on a record by record basis, area, perimeter, and length differential of less than +/- 0.5%.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Loudoun County, VA, OMAGI
Publication_Date: 20010101
Geospatial_Data_Presentation_Form: vector digital data
Type_of_Source_Media: None
Process_Step:
Process_Description:
Parcels participates in a SDE Feature Data Set Topology called LANDRECORDS.
Process_Date: now
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Contact_Position: Parcel Coordinator
Process_Step:
Process_Description:
Data were compiled from plats and deeds recorded at the Clerk of the Court and from historic tax maps. Source material was digitized or the coordinates were entered into the database via ARC/INFO COGO.
Process_Date: 19940101
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Process_Step:
Process_Description:
This data set was part of a batch process that converted legacy data from ArcInfo coverage in Librarian to a single-tiled ArcInfo coverage in preparation for a final coversion to ArcSDE Geodatabase Feature Classes. Data were extracted from Librarian using the EXTRACT TOPOLOGICAL command. Multi-tiled data sets were extracted into multiple coverages and then combined based on the feature type(s). Layers with both polygon and arc feature classes were processed with the Arc commands, MAPJOIN and DISSOLVE. Arc feature classes alone were processed with the Arc commands, APPEND and DISSOLVE. Layers with both arc and point feature classes and point feature classes alone were processed with the Arc command, APPEND. When used, the Arc command, DISSOLVE, was given with the <#all> option. All coverages were then reprojected to HARN 83 using the following .prj file specifications: INPUT PROJECTION STATEPLANE UNITS FEET ZONE 5551 DATUM NAD27 NADCON PARAMETERS OUTPUT PROJECTION STATEPLANE UNITS FEET FIPSZONE 4501 DATUM HPGN NADCON PARAMETERS END This dataset was then converted to a feature class in a geodatabase in ArcSDE.
Process_Date: 20040101
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Contact_Position: GIS Systems Analyst
Process_Step:
Process_Description:
SDE Subdivision layer absorbed into Parcels layer for migration to ArcGIS 8.
Process_Date: 20040101
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Loudoun County
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 112691
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 38.03333333333333
Standard_Parallel: 39.2
Longitude_of_Central_Meridian: -78.5
Latitude_of_Projection_Origin: 37.66666666666666
False_Easting: 11482916.66666666
False_Northing: 6561666.666666666
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.00020833333333333297
Ordinate_Resolution: 0.00020833333333333297
Planar_Distance_Units:
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GISDBB.GISBROW.PARCELS_POLY
Entity_Type_Definition: Polygon feature class
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: PA_TYPE
Attribute_Definition: Type of parcel.
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Parcel adjacent to County boundary
Enumerated_Domain:
Enumerated_Domain_Value: C
Enumerated_Domain_Value_Definition: Condominiums
Enumerated_Domain:
Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Water polygon (MCPI = 0)
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition: Parcel
Enumerated_Domain:
Enumerated_Domain_Value: M
Enumerated_Domain_Value_Definition: Parcel contains two or more tax numbers (eg, leaseholds)
Enumerated_Domain:
Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Unknown
Enumerated_Domain:
Enumerated_Domain_Value: A
Enumerated_Domain_Value_Definition: Parcel in Loudoun but taxed in another county
Enumerated_Domain:
Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: Split by County Boundary
Enumerated_Domain:
Enumerated_Domain_Value: T
Enumerated_Domain_Value_Definition: Split by Town Boundary
Attribute:
Attribute_Label: PA_LEGAL_ACRE
Attribute_Definition:
The acreage as recorded in the deed or on the plat. Legal-acre for parcels mapped from tax maps may be incorrect.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_END_DATE
Attribute_Definition: Date that parcel is removed from GIS
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Unrepresentable_Domain: User generated text; 1/1/1900 is default date for older parcels
Attribute:
Attribute_Label: PA_SUBD_SECT
Attribute_Definition:
Section of subdivision that parcel is located in. If blank, then parcel is not located inside subdivision.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_ADD_DATE
Attribute_Definition: Date that parcel is added to GIS
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Unrepresentable_Domain: User generated text; 1/1/1900 is default date for older parcels
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: PA_SUBD_PHASE
Attribute_Definition: Phase of subdivison that parcel is located in
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Unrepresentable_Domain: User generated text
Attribute:
Attribute_Label: PA_PLAT_LOT
Attribute_Definition: Lot number as recorded on the plat (no punctuation)
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_X_RULE
Attribute_Definition: Percent of difference between GIS-ACRE & LEGAL-ACRE.
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
Parcels digitized from tax maps generally have a percent difference of 15% or less; parcels mapped from plats generally have an average percent difference of less than 1%.
Attribute:
Attribute_Label: PA_UPD_SOURCE
Attribute_Definition: Source by which feature class was created or modified
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Legacy
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Unknown
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Contract
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: County
Attribute:
Attribute_Label: PA_MCPI
Attribute_Definition:
9 digit unique parcel ID that is a combination of: MAP, CELL, and PARCEL.
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value_Definition:
MAP: 3 digit map number (001-701) corresponding with map tile index. CELL: 2 digit map grid location of parcel center; the grid is comprised of 1000 by 1000 ft grid cells numbered as rows and columns (Columns numbered > 5 6 7 8 9 0; Rows numbered > 1 2 3 4). PARCEL: 4 digit location of polygon center based on the 1927 Virginia State Plane coordinate grid where an easting and northing measurement is taken. example: 6654 from: E 2229668 N475545.
Attribute:
Attribute_Label: PA_UPD_USER
Attribute_Definition:
Not for public distribution. Internal User ID of editor who created or modified feature class. Intended to track and audit features internally by County
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_UNITS
Attribute_Definition: A sequential number assigned to units of a condominium phase
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: PA_LEGAL_SQFT
Attribute_Definition: The square foot as recorded in the deed or on the plat.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_GIS_ACRE
Attribute_Definition: The acreage of the parcel as calculated by the GIS
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_SUBD_NAME
Attribute_Definition:
Name of subdivision parcel is located in. If blank, then parcel is not located inside subdivision.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_SUBD_BLOCK
Attribute_Definition:
Block of subdivision that parcel is located in. If blank, then parcel is not located inside subdivision.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_MAINT_FLAG
Attribute_Definition: TEMPORARY field; Update Designation removed at completion
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: A
Enumerated_Domain_Value_Definition: Adjoiner for specific sudvision
Enumerated_Domain:
Enumerated_Domain_Value: T
Enumerated_Domain_Value_Definition: parcel transferred
Enumerated_Domain:
Enumerated_Domain_Value: Z
Attribute:
Attribute_Label: PA_UPD_DATE
Attribute_Definition: Feature creation or modification date
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_PLAT_NUM
Attribute_Definition:
Number of the plat assigned sequentially based on the year the plat was received.
Attribute_Definition_Source: Loudoun County
Attribute:
Attribute_Label: PA_SOURCE
Attribute_Definition: Source material used to map a parcel
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: T
Enumerated_Domain_Value_Definition: Digitized from tax map
Enumerated_Domain:
Enumerated_Domain_Value: D
Enumerated_Domain_Value_Definition: Digitized from 1:2400 base map
Enumerated_Domain:
Enumerated_Domain_Value: C
Enumerated_Domain_Value_Definition: Cartographic License
Enumerated_Domain:
Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Unknown
Enumerated_Domain:
Enumerated_Domain_Value: M
Enumerated_Domain_Value_Definition: Metes and Bounds
Enumerated_Domain:
Enumerated_Domain_Value: A
Enumerated_Domain:
Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Boundary
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition: Digitized from plat
Enumerated_Domain:
Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Water
Attribute:
Attribute_Label: DB2GSE.ST_Area(SHAPE)
Attribute_Definition: Area of parcel in internal units
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Unrepresentable_Domain: positive whole number automatically generated
Attribute:
Attribute_Label: DB2GSE.SdeLength(SHAPE)
Attribute_Definition: Perimeter of feature in internal units
Attribute_Definition_Source: Loudoun County
Attribute_Domain_Values:
Unrepresentable_Domain: positive whole number automatically generated
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Contact_Position: Public Information Counter
Contact_Address:
Address_Type: mailing and physical
Address: MS 65
Address: 1 Harrison Street SE, 2nd Floor
City: Leesburg
State_or_Province: VA
Postal_Code: 20175
Country: US
Contact_Voice_Telephone: (703)771-5778
Contact_Facsimile_Telephone: (703)771-5075
Contact_Electronic_Mail_Address: mapping@loudoun.gov
Hours_of_Service: 8:00-4:30 EST, M-F
Distribution_Liability: See access and use constraints information.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: DXF
Format_Specification: AutoCad Digital Exchange File
Transfer_Size: 0.759
Digital_Transfer_Option:
Offline_Option:
Offline_Media: dvd
Fees:
Loudoun County distributes spatial data in ArcGIS database or shapefile and DXF format for the cost of reproduction. Countywide spatial datasets may be purchased for $22 per DVD for up to 4.5 GB of data. There is a $100 surcharge to purchase countywide topography, and a $3 charge if the item is to be mailed. If the customer wants the data in DXF format and/or would like OMAGI to custom select specific geographic areas of the County, there is an additional $7 per 15 minute increment labor charge. Select aerial imagery is also available.
Ordering_Instructions:
Size limit: 4.5 GB. Visit our website at: <http://www.loudoun.gov/omagi>, click on "Loudoun County Mapping Documents & Order Forms." The "Forms" directory will lead you to custom & standard (countywide) data order forms. Hardcopy maps may also be available; please contact the Mapping Office Public Information Counter for more information regarding all data requests.
Metadata_Reference_Information:
Metadata_Date: 20131122
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Loudoun County, VA, OMAGI
Contact_Position: Metadata Specialist
Contact_Address:
Address_Type: mailing and physical
Address: MS 65
Address: 1 Harrison Street SE, 2nd Floor
City: Leesburg
State_or_Province: VA
Postal_Code: 20175
Country: US
Contact_Voice_Telephone: (703)771-5778
Contact_Facsimile_Telephone: (703)771-5075
Contact_Electronic_Mail_Address: mapping@loudoun.gov
Hours_of_Service: 8:00-4:30 EST, M-F
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Use_Constraints:
This metadata reflects the source Geodatabase format and specific elements may not apply if your data is exported to SHP or DXF products. User must be aware that changes to data schema occur during data export that may not be reflected in this metadata, which represents Loudoun County's corporate geodatabase. Acknowledgement of Loudoun County would be appreciated in the use of this metadata.
Generated by mp version 2.9.6 on Fri Nov 22 13:05:41 2013