Josh Barro dissects the high costs of NYC’s inclusionary zoning program in his recent NY Times piece, “Affordable Housing That’s Very Costly.” Mr. Barro’s article highlights the inefficiency of the program when used in neighborhoods with very high housing costs. While it is well known that Mayor De Blasio supports making inclusionary zoning mandatory, the administration is currently studying this inventive in an effort to tailor the percentages to work better with rezoning proposals throughout the city. Refining the program even further to accommodate Mr. Barro’s insights might be desirable, but as the author points out, such changes are unlikely to find significant political support.