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Downtown Commercial Core · Calgary office building record

Triad Building

Office · mid-rise office building · built 1956 · 535 7 Ave SW

LiDAR roof height19.3 m

Storey-equivalent (derived)5

Footprint1,122 m²

Parcel1,200 m²

Year built (roll)1956

Assessed 2026$2.8M

Structures on parcel1

Nearest CTrain65 m

Civic address: 535 7 Ave SW, Calgary, AB
Community: Downtown Commercial Core (DNC)
City sub-property use: C101 Office · all Office sites
Land use district: CR20-C20/R20 — Commercial - Residential Core (Commercial - Core)
Height rank: #210 of 580 citywide · #104 of 111 in Downtown Commercial Core
Site coverage: 94% of parcel under LiDAR footprints
Parcel pieces: 1 titled piece · roll 067074708
Coordinates: 51.046527, -114.073466

Massing and site plan

Left: isometric massing of every LiDAR structure on the parcel, at true scale, viewed from the south-west with 3.9 m storey lines. Right: plan of the parcel with surrounding footprints, Plus 15 walkways and nearby stations. Open this building in the 3D city →

19.3 m · 1,122 m²

Context within 150 m. Grey footprints darken with height; lime is the Plus 15 network.

How it compares

Roof height against the Downtown Commercial Core median and tallest, and against the city.

Access

Public-geometry tests only; confirm routes, entrances and hours with the building.

CTrain

Nearest station: 4th Street SW, 65 m straight-line (route 201/202). Planned Green Line station 7 Avenue SW is 397 m away (Downtown Segment, per the City’s Green Line map).

Other office buildings near 4th Street SW Station →

Plus 15

The City’s Plus 15 walkway geometry touches this parcel; the plan above shows the connected segments in lime. Confirm access points, hours and the interior route with the building.

Heritage inventory

The City of Calgary Inventory of Evaluated Historic Resources records the following on this parcel.

Triad Building

Construction year: 1956
Architect: Rule Wynn and Rule
Builder: Foundation Company of Canada
Style: Modern
Typology: Office
Development era: 1946 to 1956 (Oil Boom)
Designation: Inventory listing only

Heritage Character Statement

A Modern style office building - it features large flat wall surfaces with expressed structural grid and defined modular glazing panels. Constructed by Triad Oil, it was part of the post WWII building boom of oil company headquarters in the west end of downtown Calgary. It is one of the few remaining office structures from this era.

Summary History

Following a major oil discovery at Leduc, Alberta in 1947, Calgary quickly emerged as the administrative centre of western Canada's petroleum industry. Very little major construction had taken place in the city since before the Great Depression, and oil company representatives initially made their headquarters in hotel rooms and aging office buildings. The first major project to address the increased demand for office space was the Barron Building, designed by Cawston and Stevenson and completed in 1951. This

Source: The City of Calgary Inventory of Evaluated Historic Resources, entry 472.

Assessment history

Assessed values are The City of Calgary’s taxation figures by roll year, not sale prices or rents; Alberta does not publish transaction prices.

Roll 067074708 · Office

Series not charted. The City’s published values for this roll number change by more than half or double between years, which usually signals a re-numbered, split or partially assessed account rather than a market movement. The published figures are listed below without a trend claim.

Published values by roll year

Roll year	Assessed value	Change
2005	$3.0M	—
2006	$3.6M	20.9%
2007	$6.3M	74.7%
2008	$7.6M	21.9%
2009	$7.3M	-4.6%
2010	$4.9M	-33.3%
2011	$3.9M	-19.8%
2012	$3.6M	-6.4%
2013	$8.0M	118.4%
2014	$10.0M	25.5%
2015	$10.5M	5.2%
2016	$8.5M	-19.1%
2017	$7.4M	-13.3%
2018	$7.4M	0.0%
2019	$7.0M	-4.6%
2020	$6.6M	-6.7%
2021	$6.4M	-2.0%
2022	$5.5M	-14.1%
2023	$4.7M	-15.4%
2024	$4.9M	5.6%
2025	$3.5M	-28.9%
2026	$2.8M	-20.5%

Development and building permits

Applications the City has located on this parcel since 2012, from the Development Permits and Building Permits datasets.

Recent development permits 1 since 2012

Applied	Permit	Category · description	Status
2016-07-15	DP2016-2924	Signs - Permitted Use with Relaxation NEW: SIGN - CLASS B (FASCIA SIGN) - SIGN AREA	Lapsed Approval

Recent building permits 3 since 2012 · 1 in the City’s office class

Applied	Permit	Class · work	Est. cost	Status
2015-12-18	BP2015-16054	3402 - Office · Improvement Fire alarm upgrade throughout building.	$108,000	Completed
2014-03-17	BP2014-03393	2354 - Tv Studio-No Seats · Improvement Interior Alteration	$1.3M	File Closed
2014-02-24	BP2014-02286	2354 - Tv Studio-No Seats · Improvement Interior demolition	$75,000	Completed

Declared estimated project cost across all 3 non-residential building permits on the parcel since 2012: $1.5M. Permit descriptions are the City’s records at retrieval; applicant and contractor names are not reproduced.

Nearby office buildings

The six nearest office building sites in the record, by straight-line distance between parcel centroids.

530 8 Ave SW108.7 m · built 1982 · Office · Downtown Commercial Core · 44 m
707 5 St SW125.3 m · built 2015 · Office · Downtown Commercial Core · 88 m
510 8 Ave SW27.5 m · built 1987 · Office/Retail · Downtown Commercial Core · 89 m
601 5 St SW125.8 m · built 2007 · Office · Downtown Commercial Core · 112 m
Barron Building620 8 Ave SW12.3 m · built 1940 · Office · Downtown Commercial Core · 113 m
607 8 Ave SW61 m · built 2007 · Office · Downtown Commercial Core · 124 m

Triad Building questions

Answers drawn from the record.

How tall is Triad Building?

The main structure on the parcel has a LiDAR roof height of 19.3 m in The City of Calgary’s 3D building data, a storey-equivalent of about 5 at 3.9 m per storey.

When was Triad Building built?

The City’s assessment roll records 1956 as the year of construction. The heritage inventory records 1956.

Which CTrain station is closest to Triad Building?

4th Street SW Station, 65 m in a straight line from the parcel centroid.

Is office space available at Triad Building?

This profile is built from public records and does not track availability, rents or tenancy. Submit a private requirement and current options in the building or nearby will be confirmed through Commercially.

Open in 3D Downtown Commercial Core office buildings Calgary office space guide Downtown map Skyline Office lease cost guide Office tour checklist

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) — The City of Calgary, retrieved 2026-09-21. 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.

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