Landbase Mapping Best Practices: Integrating GIS Parcel Data with Distribution Line AutoCAD Sets
A drawing is only as accurate as the base beneath it. Landbase is where GIS accuracy and CAD precision have to agree.
Agree on one coordinate system first
Most landbase problems trace back to mismatched datums. Before any conversion, the project coordinate system is fixed and every source — parcel fabric, survey, GIS export — is reprojected to it. Everything downstream inherits that decision.
Preserve attributes, don't flatten them
Converting GIS to DWG by exporting geometry alone throws away the data that made GIS useful. Attributes should be mapped into a CAD layer schema so parcel IDs, asset types and ownership survive the conversion.
- Map GIS attributes to the CAD layer standard
- Keep parcel and ROW identifiers queryable
- Reconcile overlaps and gaps before drafting
Right-of-way is part of the base
For corridor design, right-of-way and easements belong in the landbase, not bolted on later. Drafting them into the base means clearance and alignment checks start from an accurate footprint.