How do I know if my house is designated?
The City's Cultural Heritage Resource Mapping shows it by address. The City has over 240 individually designated properties and seven Heritage Conservation Districts, which include another 360 properties
(City of Hamilton, Heritage Permits, read November 5, 2026). In Dundas, the Cross-Melville district has its own advisory committee that reviews applications. A listed but not designated property is a different status; the City's heritage staff can say which applies.
What needs a Heritage Permit?
| Work | Heritage Permit? |
|---|---|
| New or replacement windows, doors, cladding, roofing, soffits, eavestroughs | Yes |
| A porch, verandah or chimney built or rebuilt | Yes |
| An addition to a designated building, or a new building in a district | Yes |
| Demolition, all or part | Yes |
| Masonry cleaning and repointing; painting masonry never painted before | Yes |
| Dormers, skylights, solar panels, A/C units, vents, meters | Yes |
| Interior work, unless the designation names interior features | Usually no |
| Roofing or siding replaced with the same material, scale and size | Usually no |
| Repairs with the same materials; repainting already painted surfaces | Usually no |
All from the City's lists (City of Hamilton, Heritage Permits, read November 5, 2026), which add: A Building Permit, Sign Permit or certain other City approvals will not be issued for a property that is designated under the Ontario Heritage Act until the applicant has received an approved Heritage Permit.
How long does it take, and what does it cost?
There is no fee. Applications go to the Heritage Permit Review Subcommittee, which meets monthly on the third Tuesday, or to the Cross-Melville committee, and must arrive at least two weeks before the meeting. Staff decide minor alterations; Council decides demolitions, new buildings and complex ones. Under the Ontario Heritage Act a decision is due within 90 days of the notice of receipt (City of Hamilton, Heritage Permits, read November 5, 2026). So the heritage step comes before the building permit in the schedule.
What if work is done without one?
The City says it is an offence, with a maximum fine of $1,000,000, and Council may restore the property and recover the cost (City of Hamilton, Heritage Permits, read November 5, 2026). The building permit side is in building without a permit.
Are there other approvals that come first?
On some lots, yes: the escarpment and conservation authorities (building near the escarpment or a creek). The areas page covers what changes by community, Dundas included. JDT Construction Inc. looks up the heritage map and these approvals before the drawings are finished.