Gulf Canada Square
Office · 2 separately assessed accounts · high-rise office building · built 1978 · 401 9 Ave SW
- Civic address
- 401 9 Ave SW, Calgary, AB
- Community
- Downtown Commercial Core (DNC)
- City sub-property use
- C101 Office × 2 · all Office sites
- Land use district
- DC — Direct Control (Direct Control)
- Height rank
- #47 of 580 citywide · #38 of 111 in Downtown Commercial Core
- Site coverage
- 114% of parcel under LiDAR footprints
- Parcel pieces
- 3 titled pieces · roll 068229608 and 1 more
- Coordinates
- 51.044495, -114.070455
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 →
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: 3rd Street SW, 250 m straight-line (route 201/202). Planned Green Line station Beltline is 273 m away (Downtown Segment, per the City’s Green Line map).
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.
Named building record
Public-domain building facts from Wikidata attached by location. Where a stated height differs from the LiDAR roof, the difference usually reflects spires, screens or datum.
- Name
- Gulf Canada Square
- Description
- building in Calgary, Alberta, Canada
- Floors
- 20
- Opened
- 1979
- Identifier
- Wikidata Q109735637 (CC0)
Assessment history
2 separately assessed accounts sit on this parcel (office condominium units or split accounts). 2026 assessed values range $200,500 to $57.3M, median $28.8M, total $57.5M. 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 068229608 (highest-assessed account on the parcel) · 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 | $173.0M | — |
| 2006 | $238.7M | 38.0% |
| 2007 | $356.3M | 49.3% |
| 2008 | $378.4M | 6.2% |
| 2009 | $376.8M | -0.4% |
| 2010 | $303.7M | -19.4% |
| 2011 | $282.3M | -7.0% |
| 2012 | $335.7M | 18.9% |
| 2013 | $466.5M | 39.0% |
| 2014 | $568.9M | 21.9% |
| 2015 | $610.3M | 7.3% |
| 2016 | $517.4M | -15.2% |
| 2017 | $388.3M | -25.0% |
| 2018 | $272.3M | -29.9% |
| 2019 | $134.4M | -50.6% |
| 2020 | $147.5M | 9.7% |
| 2021 | $128.6M | -12.8% |
| 2022 | $101.0M | -21.5% |
| 2023 | $97.3M | -3.6% |
| 2024 | $69.9M | -28.2% |
| 2025 | $59.1M | -15.5% |
| 2026 | $57.3M | -3.0% |
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 7 since 2012
| Applied | Permit | Category · description | Status |
|---|---|---|---|
| 2019-12-03 | DP2019-6178 | Signs - Permitted Use NEW: SIGN - CLASS B (FASCIA SIGN) | Released Approval |
| 2019-07-09 | DP2019-3482 | Signs - Permitted Use NEW: SIGN - CLASS B (FASCIA SIGN) | Released Approval |
| 2016-05-24 | DP2016-2014 | Change of Use - With Change to Site Plan CHANGE OF USE: CHILD CARE FACILITY (150 CHILDREN) | Released Approval |
| 2016-02-04 | DP2016-0428 | Change of Use - With Change to Site Plan CHANGE OF USE: CHILD CARE FACILITY (150 CHILDREN) | Cancelled |
| 2015-11-27 | DP2015-4948 | Change of Use - With Change to Site Plan CHANGE OF USE: CHILD CARE FACILITY (150 CHILDREN) | Cancelled |
| 2015-03-13 | DP2015-0977 | Commercial - Downtown ADDITION: OTHER (PEDESTRIAN +15 BRIDGE ) | Released Approval |
| 2014-06-24 | DP2014-2974 | Commercial - Downtown ADDITION: OFFICES (7TH FLOOR) | Lapsed Approval |
Recent building permits 163 since 2012 · 116 in the City’s office class
| Applied | Permit | Class · work | Est. cost | Status |
|---|---|---|---|---|
| 2026-09-03 | BP2026-16865 | 3402 - Office · Improvement | $50,000 | Pending Plans Review Assignment |
| 2026-08-21 | BP2026-15965 | 3402 - Office · Improvement | $345,000 | Pending Prescreen Review |
| 2026-08-14 | BP2026-15411 | 4002 - Vacant · Improvement | $985,000 | Pending Plans Review Assignment |
| 2026-08-04 | BP2026-14665 | 3402 - Office · Improvement Interior alterations | $525,000 | Issued Permit |
| 2026-07-14 | BP2026-13120 | 3402 - Office · Improvement Group D Office 3.2.2.56. | $417,741 | Issued Permit |
| 2026-02-13 | BP2026-02237 | 3402 - Office · Improvement Interior alterations | $400,000 | Issued Permit |
| 2026-01-17 | BP2026-00753 | 3609 - Restaurant - Take-Out (No Seats) · Improvement Interior alterations - VIVA MINAS | $300,000 | Completed |
| 2026-01-06 | BP2026-00196 | 3403 - Office, Medical · Improvement Interior alterations - Papillon Medical | $392,900 | Completed |
Declared estimated project cost across all 163 non-residential building permits on the parcel since 2012: $97.6M. 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.
- Royal Bank of Canada Building409 8 Ave SW
- Eighth Avenue Building505 8 Ave SW
- G.F. & J. Galt & Co. Wholesale Grocers Warehouse313 10 Ave SW
Gulf Canada Square questions
Answers drawn from the record.
How tall is Gulf Canada Square?
The main structure on the parcel has a LiDAR roof height of 91.1 m in The City of Calgary’s 3D building data, a storey-equivalent of about 23 at 3.9 m per storey. Wikidata records 20 floors.
When was Gulf Canada Square built?
The City’s assessment roll records 1978 as the year of construction. Wikidata records 1979 as the opening year.
Which CTrain station is closest to Gulf Canada Square?
3rd Street SW Station, 250 m in a straight line from the parcel centroid.
Is office space available at Gulf Canada Square?
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.