Land-based financing of urban infrastructure is growing in importance in the developing world. Why is it so difficult to finance urban infrastructure investment, when land values typically increase by more than the cost of investment? ""Unlocking Land Values to Finance Urban Infrastructure"" examines the theory underlying different instruments of land-based finance, such as betterment levies, developer exactions, impact fees, and the exchange of publicly owned land assets for infrastructure. It provides a wealth of case-study illustrations of how different land-based financing tools have been implemented, and the lessons learned from these experiences. This practical guide is designed to help expand the role of land-based financing in urban capital budgets in a way that strengthens urban infrastructure finance and urban land markets.