City of Markham City of Markham By-law Requirements:Minimum 1.2m (4ft) set back from property line or enclosurePool enclosure minimum fence height 1.2m (4ft), maximum height 1.8m (6ft) All gates must be self closing and have a lockable self latching mechanism on the interior face near the top of the gate. Minimum 0.6m (2ft) around the perimeter of the property to remain undisturbed