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HamiltonIQ

Heritage property

140 Mary St

140 Mary St, Hamilton, built in 1910, is designated under Part IV of the Ontario Heritage Act by By-law 25-007.

Last checked October 8, 2026City of HamiltonHow we know
Publisher
City of Hamilton
Source dataset
Heritage Properties (open data layer)
Official record
City of Hamilton heritage register page
Retrieved
October 8, 2026
Licence
City of Hamilton Open Data Licence (version 1.1, January 2017) Terms
From the source
status under the Ontario Heritage Act · by-law · year built · position
Derived by HamiltonIQ
nearby properties, parks and facilities
HamiltonIQ’s words
the summary sentence · what the status means
Kept current
Rebuilt from the city's register layer by script; the city's record is authoritative.
At a glance
Status
Designated (Part IV)
As the register records it
Designated
By-law
25-007
Built
1910
Name
Cannon Knitting Mill
Former municipality
Hamilton
Where 140 Mary St is140 Mary St marked on the official boundary of Hamilton.140 Mary St
140 Mary StThe outline is the City of Hamilton boundary.

What the status means

Designated individually under Part IV of the Ontario Heritage Act by a City by-law. Altering the heritage attributes, or demolishing, needs the City's consent.

Whether a specific alteration needs a heritage permit is the City’s call; ask its heritage planning staff before starting work. The designating by-law (25-007) sets out what is protected; the City can provide it.

Sources

Every factual claim above traces to one of these documents.

  1. City of Hamilton

    Heritage Properties (open data layer)

    Retrieved October 8, 2026

  2. City of Hamilton

    Municipal Heritage Register

    Retrieved October 8, 2026

  3. City of Hamilton

    Heritage Properties: open data metadata (PDF)

    Retrieved October 8, 2026

  4. Government of Ontario

    Ontario Heritage Act, R.S.O. 1990, c. O.18

    Retrieved October 8, 2026

City of Hamilton Open Data Licence (version 1.1, January 2017). Licence. Register checked October 8, 2026; the City’s record is authoritative.