Office buildings by decade built.
Year of construction as The City of Calgary records it on the assessment roll. 812 of the 822 sites carry a usable year; the median across the record is 1981.
Construction decades
Counts come from the roll, not from a building age estimate.
Every decade
Select a decade for its buildings, map and skyline.
| Decade | Office sites | Tallest roof | Median roof height |
|---|---|---|---|
| Built in the 1900s | 7 | 31 m | 19.3 m |
| Built in the 1910s | 28 | 41.2 m | 17.4 m |
| Built in the 1920s | 7 | 26.5 m | 16.6 m |
| Built in the 1930s | 2 | 16.4 m | 15.899999999999999 m |
| Built in the 1940s | 6 | 85.6 m | 10.55 m |
| Built in the 1950s | 37 | 84.9 m | 8.4 m |
| Built in the 1960s | 77 | 112.7 m | 10.45 m |
| Built in the 1970s | 194 | 159.8 m | 12.6 m |
| Built in the 1980s | 150 | 217.1 m | 17.7 m |
| Built in the 1990s | 50 | 52.5 m | 10.8 m |
| Built in the 2000s | 131 | 170.1 m | 14.6 m |
| Built in the 2010s | 106 | 243.2 m | 16.6 m |
| Built in the 2020s | 17 | 22.1 m | 5.1 m |
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, Residential Parking Zones, Snow and Ice Clearing Priority Routes, Traffic Signals, Calgary Bikeways — The City of Calgary, retrieved 2026-09-24. 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.