New environmental laws, designed to combat climate change, are driving up the costs of real estate development. Now developers are taking advantage of a financing tool to help pay for green-building requirements. The loan model, known as Property Assessed Clean Energy, or PACE, was created in 2008 to subsidize the costs of building improvements that create environmentally sustainable and resilient properties. PACE is emerging as developers go-to for creating more energy-efficient buildings that are compliant with…