OfficeBuildings.ca / Beltline · Calgary office building record

Beltline · Calgary office building record

L.T. Mewburn Co. Ltd.

Office · mid-rise office building · built 1912 · 522 11 Ave SW

LiDAR roof height18.4 m

Storey-equivalent (derived)5

Footprint537 m²

Parcel748 m²

Year built (roll)1912

Assessed 2026$1.8M

Structures on parcel1

Nearest CTrain436 m

Civic address: 522 11 Ave SW, Calgary, AB
Community: Beltline (BLN)
City sub-property use: C101 Office · all Office sites
Land use district: CC-X — Centre City Mixed Use District (Commercial)
Height rank: #221 of 580 citywide · #60 of 119 in Beltline
Site coverage: 72% of parcel under LiDAR footprints
Parcel pieces: 1 titled piece · roll 067094904
Coordinates: 51.042918, -114.072715

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 →

18.4 m · 537 m²

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

How it compares

Roof height against the Beltline 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, 436 m straight-line (route 201/202). Planned Green Line station Beltline is 416 m away (Downtown Segment, per the City’s Green Line map).

Other office buildings near 4th Street SW Station →

Plus 15

Nearest Plus 15 segment: 196 m. Not on the network.

Heritage inventory

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

L.T. Mewburn Co. Ltd. (Marshall Knop Building)

Construction year: 1912
Architect: Rule Wynn and Rule
Builder: Unknown
Style: Commercial
Typology: Warehouse
Development era: 1906 to 1913 (Pre WWI Boom, Age of Optimism)
Designation: Inventory listing only

This four storey building is a good example of the taller, narrower warehouse buildings located in Calgary's Warehouse District. The building has undergone interior renovations due to its conversion to office use but is virtually intact on the exterior. (1987)

Source: The City of Calgary Inventory of Evaluated Historic Resources, entry 335.

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 067094904 · 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	$1.8M	—
2006	$2.0M	11.0%
2007	$2.8M	40.1%
2008	$3.4M	20.5%
2009	$5.3M	56.0%
2010	$4.0M	-24.2%
2011	$1.8M	-55.8%
2012	$2.6M	44.9%
2013	$4.4M	71.3%
2014	$3.4M	-23.1%
2015	$4.5M	30.9%
2016	$4.3M	-2.5%
2017	$4.0M	-7.6%
2018	$2.9M	-27.2%
2019	$2.8M	-3.1%
2020	$2.8M	0.0%
2021	$2.7M	-4.2%
2022	$2.4M	-10.3%
2023	$1.9M	-20.2%
2024	$1.9M	0.0%
2025	$2.0M	4.1%
2026	$1.8M	-11.9%

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 0 since 2012

None located on this parcel since 2012.

Recent building permits 3 since 2012 · 2 in the City’s office class

Applied	Permit	Class · work	Est. cost	Status
2020-08-20	BP2020-11522	3499 - Office/Bank/Professional Misc. · Improvement Leasehold improvements	$4,396	File Closed
2015-08-06	BP2015-10045	4002 - Vacant · Improvement interior alteration	$63,000	Completed
2012-05-02	BP2012-05295	3499 - Office/Bank/Professional Misc. · Improvement Interior Alterations	$85,000	Completed

Declared estimated project cost across all 3 non-residential building permits on the parcel since 2012: $152,396. 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.

Canadian Equipment & Supply514 11 Ave SW18.7 m · built 1927 · Office · Beltline · 19 m
517 10 Ave SW44.5 m · built 2013 · Office · Beltline · 48 m
1015 4 St SW50.8 m · built 1978 · Office · Beltline · 51 m
525 11 Ave SW26 m · built 1979 · Office · Beltline · 60 m
550 11 Ave SW48.8 m · built 1982 · Office · Beltline · 69 m
1400 396 11 Ave SW57.9 m · built 2008 · Office Condo · 57 accounts · Beltline · 115 m

L.T. Mewburn Co. Ltd. questions

Answers drawn from the record.

How tall is L.T. Mewburn Co. Ltd.?

The main structure on the parcel has a LiDAR roof height of 18.4 m in The City of Calgary’s 3D building data, a storey-equivalent of about 5 at 3.9 m per storey.

When was L.T. Mewburn Co. Ltd. built?

The City’s assessment roll records 1912 as the year of construction. The heritage inventory records 1912.

Which CTrain station is closest to L.T. Mewburn Co. Ltd.?

4th Street SW Station, 436 m in a straight line from the parcel centroid.

Is office space available at L.T. Mewburn Co. Ltd.?

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 Beltline 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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