Georeference
Provide coordinate values, coordinate system name, units, and transformation details so the overlay aligns with base maps and agency datasets.
A clear, certified GIS Overlay documents the spatial basis for decisions, reduces disputes about boundaries and encumbrances, and shortens review cycles by providing consistent metadata and projection details. Including a signed certification and full metadata supports legal defensibility and interoperability with agency systems.
Common users include municipal planning departments, utilities, real estate developers, environmental consultants, and surveying firms that need trusted spatial context for reviews and permits.
These groups coordinate data, certification, and submission requirements so the overlay meets technical standards and agency acceptance criteria.
Provide coordinate values, coordinate system name, units, and transformation details so the overlay aligns with base maps and agency datasets.
Include data source names, collection dates, accuracy estimates, processing steps, and contact information for reproducibility and regulator review.
Attach attribute tables describing parcel IDs, easement types, utility identifiers, land use codes, and any flags used in spatial queries.
A signed certification by a qualified surveyor or GIS professional stating accuracy, date of preparation, and any limitations or known deviations.
Record revision history, author, and timestamps to show when datasets changed and to support auditability during permitting.
Deliver a signed PDF layout plus native GIS exports (GeoJSON, Shapefile, or File Geodatabase) and any ancillary CSV attribute files.
| Field | Configuration |
|---|---|
| Authentication method | Email link, SMS code, or two-factor |
| File format policy | Require PDF plus one GIS format |
| Notification routing | Sequential or parallel reviewer groups |
| Retention setting | Specify archival period and access controls |
Confirm integrations with GIS or permitting systems and set retention and audit-trail policies so signed overlays meet agency recordkeeping requirements.
1–2 weeks depending on data readiness
2–8 weeks for initial technical review
Varies; often 15–30 days if notice required
1–4 weeks depending on required changes
Timing set by agency ordinance or permit
A planning consultant compiles parcel boundaries, zoning districts, and floodplain layers to support a rezoning application.
A utility submits a corridor overlay showing easements, poles, and conduit alignments for permit clearance.
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | 7-day trial | Varies by vendor | Varies by vendor | Varies by vendor | Varies by vendor |
| Bulk Send | Yes (Business Premium) | Varies by plan | Varies by plan | Varies by plan | Varies by plan |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes (BAA available) | Yes (BAA available) | Yes (BAA available) | No | No |
| Envelope Cap | No envelope cap | 100 envelopes/user/year | Varies by plan | Varies by plan | Varies by plan |