TerraCity
Keep the physical city current.
TerraCity turns aerial imagery, reality meshes, municipal records, and market evidence into measured city objects, change findings, confidence scores, and workflow-ready evidence.
Measure
Compare
Score
Route
Find change. Reconcile records. Route evidence.
Evidence Model
Every city fact needs place, time, and proof.
The spatiotemporal model is the architecture underneath. Each object, record, change, and review candidate carries location, capture date, source, confidence, lineage, and next action.
- Physical state
- Imagery, mesh, elevation, geometry, condition, confidence.
- Record state
- Parcel, permit, declared area, assessment, transaction history.
- Review state
- Record match, discrepancy, uncertainty, owner, next action.
City Fact
One city fact becomes action.
A roof surface appears in the newest capture. TerraCity does not stop at detection. It attaches source date and parcel context, compares records, estimates review priority, and routes an evidence packet.
Parcel, building, permits, declared area, owner, and prior captures linked.
Review priority scored from discrepancy, confidence, comparables, and appeal risk.
High-confidence cases become evidence packets; uncertain cases go to field check.
- Observed
- new roof surface
- Where
- parcel, building, capture date
- Record
- declared area, permits, history
- Route
- review packet or field check
City Reality Layer
A measured baseline with source and time.
Start with the physical city: buildings, roofs, roads, sidewalks, trees, public space, terrain, utilities, access, and visible infrastructure. Then keep the source, date, lineage, and change history attached.
Imagery
Mesh
Objects
Events
Knowledge
Model the city as objects, events, and relationships.
TerraCity turns the physical surface into a city object graph with geometry, attributes, relationships, confidence, lineage, and change history.
- 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
Property assessment from observed evidence.
Compare observed physical reality through time against declared records, assessments, permits, transactions, listings, and neighborhood context to identify review candidates.
- Observation
- source stack, capture date, geometry, confidence.
- Record
- declared area, permit history, assessment, owner notice.
- Delta
- measured mismatch, comparable evidence, review priority.
- Action
- approve, field check, notify, update, appeal packet.
Operations
One measured layer, many city workflows.
Planning, public works, cadastre, assessment, finance, security, defense civil, mobility, utilities, environment, infrastructure, maintenance, and emergency response use the same measured evidence base.
Measured Inventory
What the city layer should remember.
Not every signal becomes an action. The product earns trust by measuring what can be observed, attaching evidence, and routing uncertainty to review.
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, assessment signals, permit mismatch.
Access constraints, critical visible infrastructure, maintenance candidates.
Source, date, geometry, confidence, prediction, and review state.
Evidence And Confidence
Every action needs evidence.
A city will not act on a black box. TerraCity preserves the source, date, geometry, confidence, and lineage behind every object, measurement, discrepancy, priority score, and valuation signal.
Measure
Register imagery, orthos, elevation, point clouds, meshes, records, and market sources.
Reconcile
Turn observations into city objects, relationships, records, events, and context.
Prioritize
Estimate risk, discrepancy, valuation, degradation, and review priority with evidence intact.
Route
Send high-confidence cases to action and uncertain cases to review with their evidence intact.
System of Systems
Connect the systems that run the city.
TerraCity should not become another disconnected platform. It keeps the measured city layer current, then feeds existing GIS, portals, hubs, field tools, cadastral systems, utilities, and operational workflows.
Imagery, meshes, parcels, permits, assessments, transactions, sensors.
Objects, events, evidence, confidence, predictions, and action routes.
GIS, portals, hubs, field apps, notices, utility workflows, command centers.
Scale
Built for city-scale evidence data.
TerraCity is designed for full-city imagery, elevation, mesh, vector, record, market, and sensor inputs. Start with one city, normalize the measurement and evidence workflow, and repeat across regions and countries.
Aerial imagery
Reality mesh
Municipal records
Market evidence
Sensor streams
GIS and hubs
Field operations
TerraCity
Build the measured operational layer of the city.
A measured, current, evidence-backed model of physical reality so teams can understand what exists, what changed, what it means fiscally and operationally, where risk is accumulating, and what action should follow.
Partner with Spatioterra