Does building affordable housing affect market-rate prices?

Here's a neat little primer on the arithmetic behind affordable/inclusionary housing requirements. It's by Rick Jacobus, someone we teamed with many years ago when we were developing urban Main Street programs in the Bay Area. Spoiler alert: Affordable unit requirements don't affect market-rate prices, but they may serve as a disincentive to new production. Rick illustrates the simple equation with an elegant diagram.