The purpose of this study was to undertake a comprehensive review of the Thornhill Heritage Conservation District Plan, which was adopted by Council in 1986 to guide alterations and development within the Thornhill Heritage Conservation District and to create a new plan.

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The new Thornhill-Markham Heritage Conservation District Plan (2007) has been approved by Markham Council. The By-law to amend the former heritage conservation district by-law (#260-86) by incorporating the revised Thornhill-Markham Heritage Conservation District Plan (2007) and District Inventory (2007), together with the 1986 Study, was enacted on June 26, 2007 (save and except for the 12 metre maximum height provisions for buildings on Yonge Street, and any other inconsistencies with the Thornhill Secondary Plan, which will be enacted following appropriate amendments to the Thornhill Secondary Plan).

As per the provisions of the Ontario Heritage Act, Council shall cause notice of the passage of the by-law,

1. to be served on each owner of property located in the heritage conservation district and on the Ontario Heritage Trust; and
   
   
2. to be published in a newspaper having general circulation in the municipality

Any person who objects to the by-law may appeal to the Ontario Municipal Board by giving the clerk of the municipality, within 30 days after the date of publication in the newspaper, a notice of appeal setting out the objection to the by-law and the reasons in support of the objection, accompanied by the fee prescribed under the Ontario Municipal Board Act.

The approved Thornhill-Markham Heritage Conservation District Plan 2007 is divided into four distinct sections:

User Guide to the Heritage District Plan (184k/9p)

1. District Overview (1623k/16p)
2. District Policies (646k/26p)
3. Implementing the District (45k/10p)
4. Design Guidelines:
   • Architectural Styles (1245k/14p)
   • Alterations and Additions to Heritage Buildings (865k/22p)
   • Alterations and Additions to Non-Heritage Buildings (113k/7p)
   • New Buildings (4360k/61p)
   • Commercial Features & Streetscape Elements (361k/7p)
   • Landscape Features (1500k/12p)
   • Sources/Glossary (49k/14p)

If you have problems with the above PDFs or wish to purchase a personal copy of the Heritage Conservation District Plan, please contact Heritage Section staff at heritage@markham.ca.

Contact: Mr. Regan Hutcheson, Manager, Heritage Planning at 905-477-7000 ext. 2080 or Mr. George Duncan at 905-477-7000 ext. 2296 or email heritage@markham.ca or fax 905-475-4739.