Lagos State is one of the fastestgrowing metropolises in the world. Under the Governor s TenPoint Agenda (TPA), Lagos State has made substantialprogress in creating the basis for sustained growth byimproving infrastructure and strengthening the businessenvironment. Improved public investment management (PIM) hasbeen at crucial element of these reform efforts. This paperreviews the reform efforts of the Lagos State Government instrengthening the planning and execution of expenditures,and rates the quality of PIM. The study make the case thatthe overall practices in PIM in Lagos State are still weak,but have made encouraging leaps toward improvement,including passage by the legislature of several importantbills, such as the Lagos State Procurement Bill 2009, LagosState Tenancy Bill 2009, Lagos State Public FinanceManagement Bill 2010, and the Criminal Law of Lagos StateBill 2010. However, a major issue that will continue toimpose hurdles and pressure on the ability of the StateGovernment to effectively plan, implement, and monitorpublic investment in a systematic and comprehensive manneris thehuge relative size of the Lagos State economy !andthe ever increasing population of the State, which threatens!to!outpace!progress!in!developing!relevant!institutional!capacity.