What is the Calgary office city built from?
Every LiDAR roof outline in The City of Calgary 3D Buildings dataset within the record’s coverage (18,099 structures), extruded to its measured roof height, with the 612 assessed office building sites highlighted; the City’s street centrelines (14,127 segments, drawn at right-of-way class widths), hydrology and park polygons, CP rail and CTrain track centrelines, 34,759 public trees, the Plus 15 walkway network at deck level, and CTrain and planned Green Line station markers.
Why do buildings look like flat-topped blocks?
The City’s open 3D layer is a roof-outline model: exterior walls are projected from the roof edge to the ground. Setbacks, spires and mechanical screens are not in the source, so they are not invented. Façade colour and window rhythm follow the building’s construction era on the assessment roll, which is a rendering convention, not a survey of the real façade.
Where does the terrain come from?
The City’s 3D Buildings layer records the lowest ground elevation at the perimeter of every structure. The model interpolates 18,123 of those points into a 30 m heightfield over the downtown box and a 200 m heightfield beyond it, relative to a datum of 1049.5 m above sea level; rivers are lowered two metres below their banks. It is a derived surface, not the City’s digital elevation model, and it smooths over small features.
What does the time slider change?
Sun direction and colour, sky and haze, and how much of the night lighting shows. Windows light up procedurally at dusk in a pattern seeded by each building identifier; it is stable between visits and does not represent real occupancy.
Can I walk the streets?
Yes. Walk puts the camera 1.7 m above the ground; the mouse looks around, W A S D move, Shift runs, space rises and scroll changes height. Building footprints block the way until you rise above the roof. On phones, drag to look and pinch to move.
How do the “colour by” views work?
Each view recolours the assessed office sites from one field of the record and dims everything else: roof height bands, assessed value bands from the current roll, year built, Plus 15 status, straight-line distance to the nearest CTrain platform, heritage and named buildings, the count of development and building permits since 2012, or the number of City business licences on the parcel. The legend under the toolbar states the bands. Context structures without an office assessment stay grey.
What is the shortlist for?
Click “Add to shortlist” on any record panel to collect buildings. Tour flies through them in order, Compare lays their record side by side, and “Copy tour link” produces a URL that replays the same shortlist, time of day and colour view for a client. The shortlist is kept in this browser only; nothing is sent to a server.
What does “look out from floor” show?
It places the camera inside the chosen floor of the selected building, hides that building’s own walls, and lets you turn and walk to the window line. Floor height is the measured roof height divided by the floor count (Wikidata where recorded, otherwise the derived storey-equivalent at 3.9 m per storey), so it is an approximation of the view, not a survey of any suite.
How does Measure work?
Turn Measure on and click two points on the ground or on buildings. The model reports the horizontal straight-line distance and a walking time at 80 m per minute; real routes along streets and the Plus 15 are longer.
What are the signs on the rooftops?
Sponsorship placements. A few carry Commercially house messages; the rest are marked available. Sponsorship never changes any figure in the building record.
Public record sources: Current Year Property Assessments (Parcel), Historical Property Assessments (Parcel), Assessment Subproperty Use Codes, 3D Buildings - Citywide (LiDAR roof outlines), Land Use Districts, Transit LRT Stations, Green Line Stations, Plus 15, Historic Resource (Inventory of Evaluated Historic Resources), Development Permits, Building Permits, Calgary Existing Buildings - Performance Metrics (BenchmarkYYC), Calgary Business Licenses, On-Street Parking Zones with Rates, Building Inspections Results — The City of Calgary, retrieved 2026-09-22. Contains information licensed under the Open Government Licence – City of Calgary. Building names, floor counts and architects, where shown, come from Wikidata (CC0). No brokerage, listing-data or commercial research source is used.
Boundary: Assessed values are the City’s assessment-roll figures for taxation and are not sale prices, asking rents, vacancy or availability; Alberta does not publish transaction prices. LiDAR heights are roof-surface elevations above the lowest ground point at the building perimeter and can differ from architectural heights. Storey equivalents are derived at 3.9 m per storey and are not floor counts. Distances are straight-line. Permit descriptions are the City’s records at retrieval and do not establish current use, tenancy or availability. Read the methodology.