On the Unintended Consequences of Inclusionary Zoning

"Affordable housing policies have a long history of hurting the very people they are said to help," says Emily Washington, citing public housing and rent control as evidence. She would also add inclusionary zoning to the list of failed policies.

1 minute read

June 1, 2014, 9:00 AM PDT

By James Brasuell @CasualBrasuell


"While support for older housing affordability policies has dissipated, the same isn’t true of inclusionary zoning," writes Washington.

"IZ has emerged as the affordable housing policy of choice because it has the benefit of supporting socioeconomic diversity, and its costs are opaque and dispersed over many people."

"However," writes Washington, "IZ has several key downsides including these hidden costs and a failure to meaningfully address housing affordability for a significant number of people."

After acknowledging that inclusionary zoning beneficiaries win a lottery, Washington explains that "IZ’s effects are not limited to beneficiaries, and its costs are not fully borne by developers. Because developers will lose money on the IZ units they build, this cost has to be made up in the market rate units in order for the project to go forward. This adds to construction costs and also incentivizes luxury units that can better absorb the cost of the IZ units relative to more affordable construction." Stated another way: "IZ appears free to everyone except developers because it’s not paid for out of city budgets. But ultimately housing consumers share in the cost of IZ units through a hidden tax."

Thursday, May 29, 2014 in Market Urbanism

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Aerial view of single-family homes with swimming pools in San Diego, California.

San Diego to Rescind Multi-Unit ADU Rule

The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

March 9, 2025 - Axios

Canadian flag in foreground with blurred Canadian Parliament building in background in Ottawa, Ontario, Canada.

Has President Trump Met His Match?

Doug Ford, the no-nonsense premier of Canada's most populous province, Ontario, is taking on Trump where it hurts — making American energy more expensive.

March 11, 2025 - Toronto Star

Close-up of green ULEZ sign in London, UK.

Study: London ULEZ Rapidly Cleaning up Air Pollution

Expanding the city’s ultra low-emission zone has resulted in dramatic drops in particle emissions in inner and outer London.

March 10, 2025 - Smart Cities World

Tents set up by unhoused people under freeway overpass in San Jose, California with American flag above them.

San Jose Mayor Takes Dual Approach to Unsheltered Homeless Population

In a commentary published in The Mercury News, Mayor Matt Mahan describes a shelter and law enforcement approach to ending targeted homeless encampments within Northern California's largest city.

March 14 - The Mercury News

Blue Atlanta streetcar on street in downtown Atlanta, Georgia.

Atlanta Changes Beltline Rail Plan

City officials say they are committed to building rail connections, but are nixing a prior plan to extend the streetcar network.

March 14 - Saporta Report

New York City city hall building.

Are Black Mayors Being Pushed Out of Office?

The mayors of New York, St. Louis, and Pittsburgh all stand to lose their seats in the coming weeks. They also all happen to be Black.

March 14 - Governing

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.