The National Trust for Historic Reservation has launched the Atlas of ReUrbanism, a tool meant to be a resource for city makers, urban leaders and advocates to understand the characters of each American city. The report was developed by Preservation Green Lab using available city data.

The character of the city takes three aspects into consideration: the median age of buildings, the size of the buildings and parcel and the diversity of building age (within 200×200 meters). Simply put, by clicking on a city, a fact sheet detailing its identity, policies, population density, job opportunities, and buildings, appears.

“The Character Score tells the story of building age and size on a 200-by-200-meter grid. Aimed at finding the older, diverse fabric that has proven to be valuable in urban areas, it is a composite of three datasets,” the report explains, adding that the datasets include “the median year built, where are the oldest and newest buildings, the diversity of building age, where are the blocks, where old and new buildings co-exist, and the granularity of building size; how many buildings exist together in the same space.”

“Whether you’re a mayor, planner, developer, or advocate, the Atlas of ReUrbanism offers detailed information about buildings and blocks in American cities and the people, businesses, and vitality they support,” the Atlas report reads. “The Atlas of ReUrbanism adds to the growing toolbox of resources for “smart city” urban management and strategic decision-making.”

With the provided data, the tool seeks to help attract businesses and skilled labor, empower sustainable urban growth and improve public policies.

Houston's Blocks

Courtesy of National Trust for Historic Reservation

Building Age by Era of Construction (Atlas Cities)

Courtesy of National Trust for Historic Reservation

Numbers of Buildings (Atlas Cities)

Courtesy of National Trust for Historic Reservation