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The study analyzes the effect of restrictive building codes on the price of housing, and the simultaneous impact of housing values on the strictness of codes. A model is defined and estimated, using data for more than 1100 localities. The results show that strict codes raised housing values, in 1970, by about one thousand dollars. They furthermore show that the strictness of codes is in turn affected by housing values, as well as by the strength of construction unions. Homeowners and construction unions are thus both observed to gain from restrictive building codes, which can explain the prevalence of such regulations.
Eli M. Noam (Wed,) studied this question.