When a state senator in California proposed a bill that would require cities to allow developers to build dense housing near transit stops–including five-story apartment buildings on some streets where there are only one- or two-story buildings now–Californians quickly took sides. Some say the change is a needed step to address the state’s housing crisis, and that it would lower carbon emissions because people living near transit would no longer have to drive. Some say that it would change neighborhood character, or that the increased development will drive displacement of low-income renters.
When communities can see comprehensive data about multiple plans for the future, the startup’s founders say, it becomes easier to compare them and reach consensus. For planners and designers, the tool can lead to better designs.
In Salt Lake City, in the late 1990s, they worked with the city to envision how it could meet a new demand for housing. Environmentalists were concerned about sprawl. Fiscally conservative legislators were concerned about the cost of water for new neighborhoods. The Mormon Church wanted affordable housing. Calthorpe and DiStefano ran the numbers for the various scenarios that each group wanted. When everyone saw the results, they collectively chose the option of transit-oriented development.
This happens, he says, despite living in a time when facts sometimes don’t seem to matter. The process doesn’t ask environmentalists or fiscal conservatives to change their values; it shows which solutions can best meet a variety of desires.
Looking at several impacts of a plan simultaneously also makes connections between multiple problems clearer, such as the link between walkable neighborhoods, transit, and health. “We tend to deal with our issues one at a time,” says Calthorpe. “If it’s obesity, we think about diet and exercise. But actually, the kind of environments we create have a huge impact.”
When California passed a 2008 law that required cities and regions to create plans for more sustainable design to reduce emissions, the state needed software to set targets and measure compliance. The government asked Calthorpe and DiStefano to take its early version of the software and develop it further. The tool helped the state see a range of financial, environmental, and social impacts beyond carbon, helping win broader support for smart growth rather than climate action alone. Seeing that success, UrbanFootprint decided to make another version that any city can use.
In late 2017, the company raised $5 million in seed funding from the venture firm Social Capital and angel investors. Social Capital, a purpose-driven firm in Silicon Valley, has a different perspective than some peers. “We believe UrbanFootprint will be transformative for one of the most critical real-world challenges of our times,” says Jay Zaveri, a partner at Social Capital. “It sits at the nexus of software technology, machine learning, and urban infrastructure scenario planning to drive sustainable and equitable outcomes for cities everywhere.”
As new data becomes available from the growing range of sensors used by city governments or from startups like Aclima, which is using air quality sensors attached to Google StreetView cars, that can be added to the tool. UrbanFootprint worked with The Nature Conservancy to add data about conservation and ecosystem services, and with the American Lung Association to add data about air quality impacts like asthma.
“The data is getting to the point now where one of the biggest challenges for people engaged in city building is filtering through it all,” Calthorpe says. “It turns into an avalanche of information that people can’t really manage their way to clarity and insights.” It isn’t really useful, he argues, unless it’s in a tool that makes it easily accessible.
The software is currently built for the U.S., though UrbanFootprint is also working with international cities like Chongqing, China, which has a population of 30 million, nearly as large as all of California. They believe it can be useful anywhere, and as cities continue to grow–by 2050, 70% of the world’s population will be urban–good planning, which shapes social opportunity and environmental impact, is also necessary.
“In China alone, they’re going to be building cities for another 300 million people in the next 20 years,” says Calthorpe. “That’s basically building the urban environment of the United States. And they’re going to do that in 20 years instead of 200 years. So getting cities right is really at the crux of the well-being of mankind.”