Inclusionary zoning (IZ) policies create deed-restricted affordable housing by requiring or encouraging developers to include a specified share of below-market units (a “set-aside”) as part of market-rate rental or homeowner developments.
This brief is intended to give localities implementing inclusionary zoning the tools to assess the impact of their policy on key outcomes. It lays out four different kinds of analyses that explore the impact of IZ on affordable housing production, housing market dynamics, neighborhood integration, and beneficiary households. Throughout the brief, we identify the data points needed to support these analyses and highlight concrete examples of how cities and counties have studied their IZ programs.
