Do you need a permit for a pool in Dorval?

The rules, in short

Rules from Chapter 7 (Residential neighbourhood zones H) of By-law RCM-60A-2015. The consolidation does not print section numbers, so sections are cited by their heading, except sections 336 and 356, which the text names. Setbacks come from each zone's grid of uses and standards.

• Not allowed in the front yard; at least 1.5 m from the rear and side lines, 6 m from a front line and 1.5 m from any building. (ch. 7, div. 6, subdiv. 1, "General", 1° to 4°)
• Pool platform at least 2.1 m from every lot line; above-ground accessories under 2.25 m; never under a power line. (ch. 7, div. 6, subdiv. 1, "General", 5°, 6° and 8°)
• An enclosure at least 1.2 m high is mandatory, stopping a 10 cm object and with nothing to climb on; a hedge does not count; the gate must close and latch by itself. (ch. 7, div. 6, subdiv. 1, "Safety devices", 2° to 6°)
• Above-ground pool at least 1.2 m high (portable: 1.4 m): no enclosure needed if access is by a ladder with a safety gate or by a protected platform or deck. (ch. 7, div. 6, subdiv. 1, "Safety devices", 7°)
• Fixed equipment and structures more than 1 m from the pool wall or enclosure; no diving board or slide on an above-ground or portable pool. (ch. 7, div. 6, subdiv. 1, "Safety devices", 7.1° and 9°)
• In-ground pool: a non-slip walkway at least 0.9 m wide all around. (ch. 7, div. 6, subdiv. 1, "Platform and walkway around an in-ground pool")
• A certificate of authorization is required to install an in-ground, semi-in-ground or above-ground pool. (City page on permit and certificate applications)

Summary by Radar Foncier, in our own words: the official French text of the by-law, linked above, prevails.

Applying in Dorval

• Processing time: 30 working days after a complete application is filed
• Urban planning department: 514 633-4084
• Permits on the municipality's website