Zoning and affordability: A reply to Rodríguez-Pose and Storper

Area of Science:

• Urban Planning
• Housing Economics
• Public Policy

Background:

• Debate exists on the impact of housing density regulations on housing supply and affordability.
• Some research suggests density restrictions minimally affect housing production and prices.
• Concerns are raised that increased density may disproportionately benefit the affluent and harm lower-income populations.

Purpose of the Study:

• To evaluate the relationship between allowable housing densities and housing construction in expensive cities.
• To assess the effect of density regulations on housing affordability.
• To challenge the notion that zoning reform and increased density are ineffective or regressive policies.

Main Methods:

• Survey of existing evidence on housing production and prices in relation to density regulations.
• Theoretical analysis of the economic impacts of land use regulation.
• Critical review of arguments suggesting density increases benefit only the affluent.

Main Results:

• The study challenges the claim that density restrictions do not significantly influence housing production or prices.
• Evidence suggests that increased allowable housing densities can positively impact housing affordability.
• The assertion that density increases primarily benefit the affluent and harm the poor is contested.

Conclusions:

• Neither theory nor empirical evidence supports abandoning zoning reform or concluding it is solely regressive.
• Increasing allowable housing densities is presented as a vital component of addressing housing affordability challenges in expensive regions.
• Further research is needed, but current evidence supports density increases as a tool for improving housing outcomes.