North Korea was formed after Japan relinquished its 35-year occupation of the Korean Peninsula at the end of World War II.
Within the zoning code are required minimum setbacks. A variance is a waiver of a setback requirement or height restriction in the code. It allows the owner to build closer to the property line than the code allows. For example, in an R-1 single family single and duplex zoning district, the minimum setback requirement for the rear is 10 feet on each side.
Setback is the amount each course of wall steps back into the slope. Each block system has one or a range of possible setbacks, varying from zero to 1-1/4 in. per row. Sometimes you don't want much setback, especially where a wall meets the corner of a house.