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Downtown Commercial Core · Calgary office building record

Catholic School Centre

Office · mid-rise office building · built 1967 · 300 6 Ave SE

LiDAR roof height19.5 m
Storey-equivalent (derived)5
Footprint2,148 m²
Parcel5,755 m²
Year built (roll)1967
Assessed 2026$13.4M
Structures on parcel1
Nearest CTrain151 m
Civic address
300 6 Ave SE, 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
#206 of 580 citywide · #103 of 111 in Downtown Commercial Core
Site coverage
37% of parcel under LiDAR footprints
Parcel pieces
1 titled piece · roll 068228006
Coordinates
51.047742, -114.057211

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 →

19.5 mN20 mLiDAR roof outlines · City of Calgary · true scale
19.5 m · 2,148 m²
6.2 m structure6.6 m structure7.6 m structure7.6 m structure8.5 m structure9.4 m structure9.5 m structure14.8 m structure22.4 m structure25.4 m structure27.3 m structure30.5 m structure34.6 m structure34.6 m structurePlus 15 — Open to SkyPlus 15 — Bridge EnclosedPlus 15 — Bridge EnclosedPlus 15 — Bridge EnclosedPlus 15 — EnclosedPlus 15 — EnclosedPlus 15 — Bridge Open to SkyPlus 15 — EnclosedPlus 15 — Open to SkyPlus 15 — Open to SkyPlus 15 — Bridge EnclosedPlus 15 — EnclosedPlus 15 — Open to SkyPlus 15 — Bridge Open to SkyPlus 15 — Bridge EnclosedPlus 15 — Open to SkyPlus 15 — Open to SkyPlus 15 — EnclosedPlus 15 — EnclosedPlus 15 — Bridge Open to SkyPlus 15 — Open to SkyPlus 15 — Bridge Enclosed19.5 m · 2,148 m² footprintCity Hall CTrainN50 mFootprints within 173 m · City of Calgary
Context within 173 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.

Catholic School Centre19.5 mDowntown Commercial Core median66.2 mDowntown Commercial Core tallest243.2 mCalgary office median12.8 mCalgary tallest office roof243.2 m

Access

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

CTrain

Nearest station: City Hall, 151 m straight-line (route 201/202). Planned Green Line station Event Centre / Grand Central Station is 691 m away (Downtown Segment, per the City’s Green Line map).

Other office buildings near City Hall 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.

Catholic School Centre

Construction year
1968
Architect
MacMillian Long and Associates
Builder
Unknown
Style
Brutalist
Typology
Office
Development era
1957 to 1982 (Modern)
Designation
Inventory listing only

This site is significant because:

- The property is a notable and rare Calgary example of the Brutalist architectural style. It was designed by McMillan Long & Associates; Jack Long (1925-2001), a principal in the firm, is recognized as a noteable, local architect.

-It was the first building completed as part of Urban Renewal Scheme No. 1A, a seven-block area targeted as the beginning of a much larger 1960s urban renewal project. Urban Renewal Scheme No. 1A was intended for government uses (including school board office), churches, and cultural facilities. Urban Renewal Scheme No. 1A was largely developed, but the larger project was not completed.

-The building, as well as the obelisk in the adjacent park, is decorated by 10,000 fired-clay tiles, each designed and executed by an elementary school student in the separate school student during the centennial year of Fort Calgary in 1975.

Character-defining elements: The character defining elements include: - Expressive concrete structure - Continuous horizontal glazing - Concrete solar screens - Crenulated parapet - Raised podium/plaza - Art obelisk

Source: The City of Calgary Inventory of Evaluated Historic Resources, entry 23.

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 068228006 · Office

$0$10.9M$21.8M$32.7M$43.5M200520082011201420172020202320262005 roll: $4.8M2006 roll: $5.6M2007 roll: $8.2M2008 roll: $10.8M2009 roll: $10.2M2010 roll: $10.0M2011 roll: $10.4M2012 roll: $14.1M2013 roll: $17.0M2014 roll: $24.3M2015 roll: $37.4M2016 roll: $40.3M2017 roll: $35.4M2018 roll: $23.6M2019 roll: $21.6M2020 roll: $19.7M2021 roll: $17.2M2022 roll: $17.8M2023 roll: $17.8M2024 roll: $17.8M2025 roll: $16.9M2026 roll: $13.4M$13.4M (2026)
Published values by roll year
Roll yearAssessed valueChange
2005$4.8M
2006$5.6M17.9%
2007$8.2M45.7%
2008$10.8M32.5%
2009$10.2M-5.8%
2010$10.0M-1.7%
2011$10.4M4.0%
2012$14.1M35.4%
2013$17.0M20.9%
2014$24.3M42.4%
2015$37.4M54.0%
2016$40.3M7.9%
2017$35.4M-12.2%
2018$23.6M-33.3%
2019$21.6M-8.3%
2020$19.7M-9.1%
2021$17.2M-12.7%
2022$17.8M3.6%
2023$17.8M0.0%
2024$17.8M0.0%
2025$16.9M-5.2%
2026$13.4M-20.4%

Development and building permits

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

01232012: 1 development permit2012: 0 building permits122013: 0 development permits2013: 0 building permits132014: 2 development permits2014: 3 building permits142015: 1 development permit2015: 1 building permit152016: 0 development permits2016: 1 building permit162017: 0 development permits2017: 1 building permit172018: 0 development permits2018: 0 building permits182019: 0 development permits2019: 0 building permits192020: 0 development permits2020: 0 building permits202021: 1 development permit2021: 0 building permits212022: 0 development permits2022: 0 building permits222023: 0 development permits2023: 0 building permits232024: 0 development permits2024: 0 building permits242025: 0 development permits2025: 0 building permits252026: 0 development permits2026: 0 building permits26Development permitsBuilding permits (non-residential)

Recent development permits 5 since 2012

AppliedPermitCategory · descriptionStatus
2021-05-06DP2021-3289Signs - Discretionary Use
NEW: SIGN - CLASS E (DIGITAL MESSAGE SIGNS - 2, 3 YEARS)
Released
Approval
2015-02-17DP2015-0574Change of Use - With Change to Site Plan
CHANGE OF USE: SCHOOL - PRIVATE (CHANGE TO PARKING LOT ADD 12 STALLS AND REMOVE LANDSCAPING )
Released
Approval
2014-09-17DP2014-4483Signs - Permitted Use
NEW: SIGN - CLASS B (FASCIA SIGNS - 10)
Released
Approval
2014-03-27DP2014-1335Change of Use - Discretionary Use or Relaxations Required
CHANGE OF USE: MEDICAL CLINIC
Released
Approval
2012-01-17DP2012-0169Change of Use - Discretionary Use or Relaxations Required
CHANGE OF USE: COLLEGE
Released
Approval

Recent building permits 6 since 2012 · 1 in the City’s office class

AppliedPermitClass · workEst. costStatus
2017-11-24BP2017-155265104 - College, Other · Improvement$144,691Completed
2016-06-22BP2016-070117103 - Special Function - Class 1 · New
Special Event - Bow Valley College Stampede Breakfast
$3,000Completed
2015-06-23BP2015-075727103 - Special Function - Class 1 · New
Temp Tents - Bow Valley College Public Stampede Breakfast
$3,000Completed
2014-12-04BP2014-186605104 - College, Other · Improvement
interior partitons on single tenant floor
$119,200Completed
2014-06-12BP2014-088663403 - Office, Medical · Improvement
Bow Valley College Campus Phase 2
$963,885Completed
2014-03-20BP2014-035815104 - College, Other · Improvement
Bow Valley Flood Repair & Building Upgrades
$2.5MCompleted

Declared estimated project cost across all 6 non-residential building permits on the parcel since 2012: $3.7M. 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.

Catholic School Centre questions

Answers drawn from the record.

How tall is Catholic School Centre?

The main structure on the parcel has a LiDAR roof height of 19.5 m in The City of Calgary’s 3D building data, a storey-equivalent of about 5 at 3.9 m per storey.

When was Catholic School Centre built?

The City’s assessment roll records 1967 as the year of construction. The heritage inventory records 1968.

Which CTrain station is closest to Catholic School Centre?

City Hall Station, 151 m in a straight line from the parcel centroid.

Is office space available at Catholic School Centre?

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.

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.