A 2 story concrete L-shaped wall provides structural purpose and ties the lower level to the at-grade level of the house. (Photo courtesy Bryan Mekechuk)

A 2 story concrete L-shaped wall provides structural purpose and ties the lower level to the at-grade level of the house. (Photo courtesy Bryan Mekechuk)

A 2 story concrete L-shaped wall provides structural purpose and ties the lower level to the at-grade level of the house. (Photo courtesy Bryan Mekechuk)