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HaltonHillsIQ

Heritage property

9111 Third Line

9111 Third Line, Halton Hills, is designated under Part IV of the Ontario Heritage Act.

Last checked October 8, 2026Town of Halton HillsHow we know
Publisher
Town of Halton Hills
Source dataset
Heritage Register (tables on the Town's Heritage Planning page)
Official record
Town of Halton Hills heritage register page
Retrieved
October 8, 2026
Licence
Content from the Town of Halton Hills website, reproduced with attribution as the site permits Terms
From the source
status under the Ontario Heritage Act · the description, reproduced verbatim
Derived by HaltonHillsIQ
position, matched by address to an official layer · nearby properties, parks and facilities
HaltonHillsIQ’s words
the summary sentence · what the status means
Kept current
Rebuilt by script from the tables on the city's heritage register page; the city's record is authoritative.
At a glance
Status
Designated (Part IV)
As the register records it
Part IV Designated
Name
Andrew Laidlaw Farmhouse
Where 9111 Third Line is9111 Third Line marked on the official boundary of Halton Hills.9111 Third Line
9111 Third LineThe outline is the Town of Halton Hills boundary.

Description

The Andrew Laidlaw Farmhouse at 9111 Third Line is a one-and-a-half-storey Georgian/Neo-Classical residential building constructed prior to 1860. The existing farmhouse is one of the oldest buildings in the Scotch Block and is associated with the prominent Scotch Block pioneering Laidlaw family between 1835 and 1872.

The Town of Halton Hills’ description, reproduced from its heritage register.

What the status means

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

Whether a specific alteration needs a heritage permit is the Town’s call; ask its heritage planning staff before starting work.

Sources

Every factual claim above traces to one of these documents.

  1. Town of Halton Hills

    Heritage Register (tables on the Town's Heritage Planning page)

    Retrieved October 8, 2026

  2. Statistics Canada

    National Address Register (June 2026), building points

    Retrieved October 8, 2026

  3. Town of Halton Hills

    Heritage Planning: the Heritage Register

    Retrieved October 8, 2026

  4. Town of Halton Hills

    Privacy Policy & Terms of Use

    Retrieved October 8, 2026

  5. Ontario Heritage Trust

    Ontario Heritage Act Register

    Retrieved October 8, 2026

  6. Government of Ontario

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

    Retrieved October 8, 2026

Content from the Town of Halton Hills website, reproduced with attribution as the site permits. Licence. Register checked October 8, 2026; the Town’s record is authoritative.