Want More Housing? Ending Single-Family Zoning Won't Do It.

Abolishing single-family zoning rules as an affordable-housing solution has failed in places such as Minneapolis and Oregon because their narrowly drawn reforms left other obstacles in place. Houston serves as an example of effective policies that promote "missing middle" housing – denser developments than detached houses – because it combined its lack of single-family zoning with a reduction in minimum lots sizes. The result is far more affordable housing than in other booming job markets. Lot-size restrictions are among several other rules that can frustrate the desire for more housing.

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