Construction Industry Association v. City of Petaluma
United States Court of Appeals for the Ninth Circuit
522 F.2d 897 (1975)
Facing a nearly 25 percent population increase in two years, Petaluma (defendant) adopted a Plan capping new multi-unit housing at 500 units over five years, establishing a surrounding greenbelt, and evenly allocating building permits geographically and by housing type; the Construction Industry Association and two landowners (plaintiffs) sued, and the district court found the Plan's express purpose and effect was excluding people who would otherwise move to Petaluma, ruling parts of the Plan unconstitutionally denied the right to travel and enjoining those provisions.
Whether an exclusionary zoning regulation is valid if the regulation is rationally related to a legitimate state interest.