Workflow: Parcel corner location update

Available with Standard or Advanced license.

This workflow describes the steps for making ad hoc updates to the locations of parcel boundaries and corner points in a parcel fabric enabled with the Local Government Information Model (LGIM). Use this workflow on your own data.

Ad hoc updates of the locations of parcel boundaries and points are done when there is a need to change the spatial positions of parcels because of misalignments with other data. Parcel boundaries that have been digitized or imported from inaccurate CAD files often need to be updated to align with more accurate data such as high-resolution imagery.

When parcels in the parcel fabric have correct dimensions, that is, COGO dimensions that match the record of survey, a parcel fabric adjustment can be used together with control points to adjust and derive highly accurate locations of parcel corner points. However, when dimensions are unreliable, you can, in the interim, make ad hoc positional updates to parcel boundaries and corner points instead of reentering dimensions and running a least-squares adjustment.

The workflow consists of the components shown in the diagram below:

Components for updating the locations of parcel boundaries and points

Search for parcels

1. Open a map document that contains your parcel fabric (enabled with the Local Government Information Model).
2. On the Table Of Contents window, make the layers that contain the parcels you want to update selectable. For example, if you want to update the boundaries and points of lot parcels, tax parcels, and encumbrance parcels, you would make the Lots and Units, Tax Parcels, and Encumbrances layer selectable.
3. Search for the parcels you want to update.

Select parcels

Select the parcels you want to update:

1. Start an edit session and use the Select Parcel Features tool located on the Parcel Editing toolbar to select the parcels containing the boundaries you want to update:

Select parcels

Move parcel boundaries and points

In this workflow, the boundaries and corner points of the selected parcels will be updated and aligned with high-resolution imagery.

Tip:

You can download the Local Government Imagery Hybrid Basemap for the Local Government sample dataset from the land records resource center.

1. Click the Transform Parcels tool on the Parcel Editor toolbar to display the Transform Parcels toolbar.
2. Use the Move Parcels, Scale Parcels, Rotate Parcels, and Scale/Rotate Parcels tools to align parcel boundaries with the underlying imagery.

Move, scale, and rotate parcels
3. Click Commit Transformation to save the parcel transformation.

   Choose whether to create new center points or keep original center points for curved boundaries.

4. If necessary, use the Move parcel point tool to move individual parcel points.

Move a parcel point
5. Click Commit Transformation to save changes to parcel point locations.
All parcels sharing the points that were moved will be updated. This includes underlying lot parcels, encumbrance parcels and historic parcels.

Updated parcel boundaries

Note:

When changing the geometry of parcels, COGO dimensions on lines may no longer match the line shape geometry. For example, when moving a point, the bearing and distance of the line shape will change, but the COGO dimension attribute will not be updated. In the parcel traverse grid, bearings that differ by more than 10 degrees from the line shape and distances that differ by more than 20 percent of the line shape are highlighted in yellow.



You can maintain spatially accurate parcel corner positions with correct COGO dimensions using control points and the parcel fabric least-squares adjustment. Parcels with inaccurate or unreliable dimensions should be reentered with the correct COGO dimensions from the survey record. A least-squares adjustment can be run on a selection of parcels to adjust them to specified control points.

Learn more about the parcel fabric adjustment

Annotate parcels

Annotation does not need to be updated for positional updates to parcels. If the annotation is feature linked, it will move to the new location of the updated boundaries. If necessary, use the Edit Annotation tool to edit and change the placement of the generated annotation.

To re-create annotation for selected parcels, click the Annotate Parcel Courses tool on the Parcel Editor toolbar.

Attribute parcels

Since new parcels were not created in the workflow, entering new attribute information is not necessary. You can edit existing attributes by selecting the parcels and opening the Attributes window. You can also edit parcel attributes on the Parcel Details dialog box under the Properties tab.