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How Portland, OR made housing more affordable

In a word: density. New zoning rules in Portland, OR led to an increase in duplexes, tri-plexes, and quad-plexes on lots previously designated for single family homes. The new units typically sell for $300,000 less than traditional houses and that’s helped more people become homeowners. The change has been so effective, Oregon’s governor wants to bring the housing model to the rest of the state. NBC News’ Steve Patterson reports.