San Diego’s ‘Hostile Architecture’ Reflects Our Hostile Nature and Disrespect for Public Space — So Much for a ‘Friendly City’
by Calista Stocker / Times of San Diego / Dec. 16, 2025
In 2017, the Metropolitan Transit System spent $1.4 million upgrading bus stop benches throughout the county. In addition to improved water drainage and material updates, the new benches came with dividers, which their contractor refers to as “vagrant bars.”
That was a year after the city of San Diego raced to install jagged rocks downtown under Interstate 5 in time for the Major League Baseball All-Star Game at Petco Park, and five years before the Downtown Partnership built a controversial bike rack/bench designed to deter lying down.
These are all examples of what urban designers call “hostile architecture.” Commonly referred to as “anti-homeless architecture” or “defensive design,” the concept is used to describe public infrastructure design intended to subtly (or not so subtly) change behavior.
San Diego-based urban designer Howard Blackson argues that hostile architecture reflects the hostility of human nature.

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