Impact of Urban Planning Regulations on Housing Affordability in Port Harcourt: An Analytical Framework

Urban planning regulations, while designed to ensure development quality and land use order, can have significant unintended consequences on housing supply and affordability. This study develops and applies an analytical framework to assess the impact of planning regulations on housing affordability in Port Harcourt, Rivers State. The framework integrates supply-side regulatory burden analysis with demand-side affordability measurement, drawing on planning regulation literature from both Nigerian and international contexts. Primary data were collected through interviews with 22 housing developers, 8 planning authority officials, and 280 household surveys across different income segments assessing housing cost burden. Regulatory impact was measured through a compliance cost index constructed from permit fees, processing times, setback and density requirements, and infrastructure contribution obligations. Hedonic price modelling was used to estimate the price premium attributed to regulatory compliance costs. Findings are expected to demonstrate that high permit costs and lengthy approval processes add measurable premiums to formal housing supply, effectively pricing formal housing out of reach for the lowest income quintile while generating a substantial informal construction market that bypasses regulation. The study fills a gap in empirical analysis of the regulatory-affordability nexus in South South Nigerian cities. Recommendations address streamlining of planning approval processes, tiered development standards for affordable housing projects, cross-subsidization mechanisms allowing higher-income development to fund affordable housing provision, and reform of infrastructure contribution obligations. Keywords: Planning regulations, Housing affordability, Port Harcourt, Regulatory burden, Housing supply.