Matthew Petty

Matthew Petty is co-founder of Pattern Zones Co., a company that helps cities and towns implement housing innovations that scale. He has been pioneering pre-approved building programs since 2016. Learn more and review case studies at www.patternzones.com.

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Your city legalized triplexes. The building code said no

To build more affordable 'missing middle' housing, changing zoning laws is not enough. We need small multifamily buildings to be regulated under the residential code.
MATTHEW PETTY, MATTHEW HOFFMANAPR. 1, 2026