Summary
This regulation establishes strict height restrictions on buildings, structures, and natural growth within a large area surrounding Mirabel airport to ensure aviation safety. It defines imaginary surfaces (approach, outer, transitional) that no object may penetrate, prohibits owners from allowing trees/vegetation to exceed these surfaces, and grants the Minister power to order removal of violations. The regulation applies to thousands of specific land parcels across multiple municipalities, effectively sterilizing vast areas of private property.
Reason
This regulation constitutes an uncompensated taking of property rights that destroys billions in economic value and development potential. While aviation safety is legitimate, this blanket prohibition across thousands of privately-owned parcels is the most restrictive, least efficient solution. Less restrictive alternatives exist: liability law already incentivizes safe development; the airport could purchase development rights or easements from willing sellers; height restrictions could be tied to actual risk rather than arbitrary imaginary surfaces. The regulation creates severe unintended consequences: permanent suppression of housing supply in Quebec's most developable regions, massive deadweight loss, incentive distortions that prevent mutually beneficial agreements, and government planning that overrides decentralized knowledge. The same safety outcomes could be achieved through market mechanisms that respect property rights rather than eliminating them.