Flood zone · Pierrefonds-Roxboro · 2026
The map in force in Pierrefonds-Roxboro, what the City put in place, what the 2026 framework allows, and the checklist for a house near the Rivière des Prairies.
Flood zone in Pierrefonds-Roxboro in 2026: The borough is clear: every neighbourhood and every home flooded by the Rivière des Prairies, the water table or the basement in 2017 and 2019 must consider itself in a flood zone. Between 300 and 350 homes in Pierrefonds-Roxboro were affected by flooding or major water accumulation during the recent events of 2026; the 2026 flood season has been over since June. The modernized regulatory framework of 1 March 2026 applies: new residence prohibited in the moderate, high and very high classes and in the high-current zone, permitted under conditions in the low class; rebuilding under conditions; maintenance permitted. Before buying near the Rivière des Prairies: the written class for the address, an insurance quote with the flood endorsement, a lender's position (Desjardins no longer lends in high-current zones since February 2024), the certificate of location and the seller's declaration. Sources read on 15 September 2026.
The borough is clear: every neighbourhood and every home flooded by the Rivière des Prairies, the water table or the basement in 2017 and 2019 must consider itself in a flood zone. The map to consult is the Government of Quebec's, and the City of Montreal refers to the CMM's preliminary new-generation map.
Between 300 and 350 homes in Pierrefonds-Roxboro were affected by flooding or major water accumulation during the recent events of 2026; the 2026 flood season has been over since June. The borough has a special intervention plan with sandbag distribution by priority sector.
Montreal's building permit is issued by the borough ($9.80 per $1,000 of work); in a flood zone, the work also goes through the rules of the modernized framework, and a flooded home is rebuilt only under conditions. The modernized framework's rules apply everywhere: new residence prohibited in the moderate to very high classes and in the high-current zone, rebuilding under conditions, maintenance permitted; the detail is in renovating or rebuilding in a flood zone.
The written class, the certificate, proof of restoration or immunisation, an insurance quote for the address and a lender's position: that is the file that defends the price, described in selling a house in a flood zone. A broker from the team who knows Pierrefonds-Roxboro builds it before listing.
The borough is clear: every neighbourhood and every home flooded by the Rivière des Prairies, the water table or the basement in 2017 and 2019 must consider itself in a flood zone. A recent certificate of location and the seller's declaration complete the answer.
A new residence is prohibited in the moderate to very high classes and in the high-current zone, permitted under conditions in the low class; rebuilding after a disaster is permitted under conditions, with a municipal permit and often immunisation.
By class and by the house's history: the flood endorsement can be offered or refused by the insurer, and Desjardins no longer lends in high-current zones since February 2024; other lenders judge case by case.
Sources: montreal.ca, « Crue printanière, Pierrefonds-Roxboro » (mis à jour le 26 juin 2026) et « Nouvelle carte des zones inondables » (14 mai 2026), lus le 15 septembre 2026; Québec.ca (regulatory framework of 1 March 2026). Informational page: the City decides for your address.
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Also available in French: version française de ce guide.
Published September 7, 2026 by the Loaa & Manseur team, the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 according to the official RE/MAX ranking. Tell us about your project.
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