TerraCity
Keep the physical city current.
TerraCity is the operating layer for physical city reality. It converts aerial imagery, reality meshes, municipal records, market signals, and field data into current city objects, change events, confidence scores, and action packets for government teams.
Measure
Compare
Score
Route
Measure reality. Detect change. Move agencies to action.
Operating Model
Put every city fact in place and time.
The spatiotemporal layer is the source of truth. Buildings, parcels, assets, records, changes, and reviews carry where, when, source, confidence, lineage, owner, and next action.
- Physical reality
- Imagery, mesh, elevation, geometry, condition, source date.
- Institutional record
- Parcel, permit, declared area, assessment, transaction, owner.
- Operational state
- Match, discrepancy, confidence, priority, owner, action.
From Observation To Action
Turn city change into government action.
A roof surface appears in the latest capture. TerraCity links it to parcel and permit context, compares records, scores priority, and produces a packet a team can review or act on.
Parcel, permit, declared area, owner, and prior captures linked.
Priority scored from mismatch, confidence, value impact, and appeal risk.
High-confidence findings route to action; uncertain cases go to review.
- Observed
- new roof surface
- Where
- parcel, building, capture date
- Record
- declared area, permits, history
- Route
- review packet or field check
Physical Reality Layer
A current baseline for the city.
TerraCity starts with what exists: buildings, roofs, roads, sidewalks, trees, public space, terrain, utilities, access, and visible infrastructure. Every object keeps source, date, lineage, confidence, and change history.
Imagery
Mesh
Objects
Events
City Ontology
Model the city as objects, events, and relationships.
The physical surface becomes an operational city model: geometry, attributes, relationships, records, forecasts, confidence, lineage, and change through time.
- Geometry
- footprint, roof plane, height, volume, surface, boundary.
- Time
- capture date, change event, update cadence, forecast window.
- Records
- parcel, permit, declared area, assessment, listing, sale.
Fiscal Intelligence
Assess property from observed reality.
Connect observed change to declared records, permits, assessments, transactions, listings, and neighborhood context so fiscal teams can find high-value review candidates without losing proof.
- Observation
- source, capture date, geometry, confidence.
- Record
- declared area, permit history, assessment, owner notice.
- Delta
- measured mismatch, comparable evidence, review priority.
- Action
- clear, inspect, notify, update, appeal packet.
Operations
One city reality layer for every agency.
Planning, cadastre, finance, public works, mobility, utilities, security, civil defense, environment, maintenance, and emergency response operate from the same measured view of the physical city.
Measured Inventory
What the city layer can know.
The first product is not a map of everything. It is a trusted inventory of observable assets and changes, with uncertainty routed to review before it becomes action.
Buildings, floors, roofs, additions, pools, garages, sheds.
Sidewalks, curbs, pavement, surface condition, encroachment.
Trees, canopy, vegetation, water, impervious surfaces, drainage risk.
Declared area, taxable base, valuation signals, permit mismatch.
Access constraints, critical visible infrastructure, maintenance candidates.
Source, date, confidence, model version, prediction, and review state.
Operational Evidence
Make every action defensible.
Cities cannot act on black boxes. TerraCity preserves the source, date, geometry, confidence, lineage, and record context behind every object, discrepancy, priority score, valuation signal, and routed action.
Measure
Register imagery, orthos, elevation, point clouds, meshes, records, and market sources.
Reconcile
Convert observations into city objects, relationships, records, events, and context.
Prioritize
Score discrepancy, value impact, degradation, urgency, and review risk with evidence intact.
Route
Move high-confidence findings into agency workflows; send uncertain cases to review.
System of Systems
Feed the systems that run the city.
TerraCity should not replace the city's GIS, portals, field tools, hubs, cadastral systems, utilities, or command centers. It keeps the physical reality layer current and pushes trusted objects and actions into the systems already used.
Imagery, meshes, parcels, permits, assessments, transactions, sensors.
Objects, events, confidence, lineage, predictions, and action routes.
GIS, portals, field apps, notices, utility workflows, command centers.
Scale
Built for city-scale operations.
The architecture accepts full-city imagery, elevation, mesh, vector, municipal record, market, and sensor inputs. Start with one city, prove the measurement and action workflow, then repeat across regions and countries.
Aerial imagery
Reality mesh
Municipal records
Market evidence
Sensor streams
GIS and hubs
Field operations
TerraCity
Build the operating layer for physical city reality.
A current, evidence-backed model of what exists, what changed, what matters fiscally and operationally, where risk is accumulating, and which agency action should follow.
Partner with Spatioterra