Vaudreuil-Dorion
What are the rules for a home extension in Vaudreuil-Dorion?
A building permit is required to extend a building (Permits and Certificates By-law 1871).
Permit requiredA zone, a heritage area or a shoreline can have its own standards: with your address, the Radar reads your zone's grid and tells you what applies to your property.
The rules, in short
- A building permit must be obtained before building, extending or adding a building. (By-law 1871, art. 4.1)
- Home that does not meet the setbacks (acquired rights): an extension may encroach on setbacks already encroached upon, without going beyond the existing encroachment, while respecting the built-area/lot and floor/lot ratios of the zone grid; an added storey is allowed on the same conditions, under the zone's maximum height. (s. 9.9)
Summary by Radar Foncier, in our own words: the official French text of the by-law, linked above, prevails.
Applying in Vaudreuil-Dorion
- Cost: Fees By-law 1709: fence $15.50; above-ground pool $30.50; in-ground pool $51; hot tub $30.50; accessory building (residential) $51; accessory structure $30.50
- Urban planning department: 450 455-3371 (Permits and Inspections Division)
- Permits on the municipality's website
For the permit application, you will often need a site plan (certificat d'implantation) drawn up by a land surveyor: certificate of location and site plan, what to know (in French).
Other projects in Vaudreuil-Dorion
Home extension elsewhere: Dorval, Gatineau, Montreal, Sherbrooke, Westmount.
Version française de cette page
Source: Zoning By-law 1872 (in force November 12, 2025, administrative consolidation up to September 11, 2026), French version, checked on October 22, 2026. Plain-English summary: the official French text prevails, and a by-law can change. Confirm with the Vaudreuil-Dorion urban planning department before buying materials. Radar Foncier is an independent service, not affiliated with the municipality.
Radar Foncier in English. Permits and rules for Québec homeowners; the full site and the reports are in French. Version française