Mega-Construction and Urban Transformation in Pakistan:Spatial Spillovers on Land Markets and Agglomeration Productivity

Abstract

This study investigates the spatial spillover effects of mega-infrastructure construction projects on land market dynamics and urban agglomeration productivity across Pakistan's emerging urban centers. Using panel data from 36 major cities over 2010–2024, we employ spatial econometric models (Spatial Durbin Model and Spatial Autoregressive specifications) to quantify both direct and indirect effects of mega-construction projects—including motorway networks (M-1, M-2, M-4, M-14), metro systems (Orange Line Lahore, Green Line Karachi), and China-Pakistan Economic Corridor (CPEC) infrastructure—on residential property values, commercial land premiums, and total factor productivity in agglomerated urban clusters.
Key findings reveal significant positive direct effects: mega-construction projects increase land prices by 35–60% within 15 km radii, with documented elasticities of 0.47 for motorway proximity and 0.38 for metro accessibility. Spatial spillover effects extend 200–400 km, generating network effects across secondary cities. These spillovers are heterogeneous: positive for megacities and established urban corridors, but minimal for smaller peripheral cities lacking economic diversification. Agglomeration productivity (measured via total factor productivity indices) shows cumulative gains of 12–18% in primary clusters receiving concentrated infrastructure investment.
The study identifies critical policy mechanisms: land capitalization effects account for 67% of observed appreciation, while agglomeration externalities (knowledge spillovers, labor market deepening, input-output linkages) explain 23% of productivity growth. Findings suggest that while mega-construction generates substantial urban concentration and wealth creation in core hubs, distribution mechanisms remain weak, concentrating benefits within existing high-productivity corridors. Policy implications center on spatial equity, controlled decentralization strategies, and transitional infrastructure design to capture spillover benefits in secondary urbanization zones.