In the 80's when the economy tanked tax revenue plunged. When the voters refused to raise property taxes in a deep recession the legislators came up with high density planning to increase property tax revenue through market manipulation at the development stage and bypass the voter. HDP is based on the social engineering formula of forcing X amount of homes per acre at Y value to achieve Z desired property tax revenue. urban growth boundaries, X, limit supply and caused developable lots to skyrocket in costs overnight. Newly adopted inflationary "uniform codes," Y, outlawed affordable housing, and have forced nothing but overkill designs to meet Y value.