This document summarizes a project to develop smart eco-districts in Washington DC using Internet of Things sensors. The project would scale an existing smart city project on Pennsylvania Avenue to connect four eco-districts with an open data system. In phase one, the plan is to add environmental sensor arrays to the Pennsylvania Avenue project and develop a sensor array prototype. In phase two, the goal is to complete pilot smart eco-district projects in each district, deploy an open data hub, and establish a sensor developer program for students.