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Data Layer split-estate

Split-estate detection

Flags federal-subsurface / private-surface parcels (and the inverse) at section level.

Source
BLM · State CadNSDI
Federal subsurface minerals + state CadNSDI surface parcels
Refresh
Monthly
Coverage
BLM-administered states with CadNSDI
License
U.S. federal + state public records

Combines the BLM federal-subsurface ownership layer with state CadNSDI surface parcels to flag split-estate at the PLSS section level. Returns a boolean is_split_estate plus the ownership combination (federal/private, private/federal, federal/state, etc.) — the diligence field that drives surface-use agreement strategy for federal-land operators.

Endpoint + sample query

REST endpoint
/api/energy/split-estate
Sample query 
GET /api/energy/split-estate?section=T46N+R75W+Sec+22+WY

Field schema

FieldTypeNote
  • is_split_estatebooleanTrue if surface + subsurface differ
  • subsurface_owner_typeenumfederal · state · private · tribal · unknown
  • surface_owner_typeenumfederal · state · private · tribal · unknown
  • confidenceenumhigh · medium · low (CadNSDI coverage gap)

Layers that pair with this one

BLM federal O&G leases

Active and pending federal mineral leases with holder, commodity, and expiration.

Other Energy Pack layers

Multi-state O&G wells
ONRR royalty history
USGS orphaned wells
FracFocus disclosures
HIFLD pipelines (NG · NGL · crude)
Sage-grouse habitat (BLM HMA)

Unlock Split-estate detection on the Energy Pack

$150/mo on Pro+ or Business — bundled with Enterprise.

See pricing