How Land-use Controls Influence Housing Prices
"Two economists found that demand alone did not explain the difference in prices. For starters, many fast-growing areas did not show skyrocketing house prices...The difference between the land prices is the implicit cost of all the local land-use controls, from zoning to the time it takes to get a permit. Some regulations simply raise the cost of building by slowing down the process. Others limit density, making it illegal to subdivide expensive land."
Thanks to Congress on New Urbanism