We reached out to the City of Calgary to get the costs for the skateparks that have been developed in line with the Skateboard Amenities Strategy. Here they are (design and construction costs together):
CKE: $376,032.32 (4,500 square feet)
Huntington Hills: 1,059,006.33 (12,500 square feet)
Southwood: $1,066,730.89 (13,500 square feet)
New Brighton: $760,203.45 (9,950 square feet)
Midnapore: $407,558.95 (3,997 square feet)
Deer Run: $598,326.02 (4,786 square feet)
The Strategy recommends 243,000 square feet of new skatepark terrain.