How an 11-Foot-Tall 3-D Printer Is Helping to Create a Community

Three-dimensional printing can create nearly any object. A partnership in Mexico is putting that theory to the test, building a village for residents living in poverty.

By Debra Kamin, The New York Times, 2021/09/2 [original article contains links and striking illustrations]

3-D printed houses in Nacajuca, Mexico.Credit...Alejandro Cegarra for The New York Times 

Excerpt:

Pedro García Hernández, 48, is a carpenter in the southeastern Mexican state of Tabasco, a rainforest-shrouded region of the country where about half of the residents live below the poverty line. 

Hernandez image from article

He ekes out a living making about 2,500 pesos ($125.17) a month from a tiny workspace inside the home he shares with his wife, Patrona, and their daughter, Yareli. The home has dirt floors, and during Tabasco’s long rainy season, it’s prone to flooding. Dust from his construction projects coats nearly everything in the home, clinging to the bedroom walls, the pump toilet and the counters of his makeshift kitchen.

But that will soon change. In a matter of months, Mr. Hernández and his family are moving to a new home on the outskirts of Nacajuca, Mexico: a sleek, 500-square-foot building with two bedrooms, a finished kitchen and bath, and indoor plumbing. What’s most unusual about the home is that it was made with an 11-foot-tall three-dimensional printer.

A manufacturing process that builds objects layer by layer from a digital file, 3-D printing is set for explosive growth. After a pandemic-related boom from printing objects like test swabs, protective gear and respirator parts, the 3-D printing market is forecast to be worth $55.8 billion by 2027, according to Smithers, a technology consulting firm.

Nearly any object can be printed in 3-D; in construction, it uses concrete, foam and polymers to produce full-scale buildings. The real estate industry is warming to the trend: The construction firm SQ4D listed a 3-D printed house in Riverhead, N.Y., this year for $299,000. It was billed as the first 3-D printed home for sale in the United States, but it was predated by similar projects in France, Germany and the Netherlands.

And now, the era of the 3-D printed community has arrived. Mr. Hernández’s home is one of 500 being built by New Story, a San Francisco nonprofit organization focused on providing housing solutions to communities in extreme poverty, in partnership with Échale, a social housing production company in Mexico, and Icon, a construction technology company in Austin, Texas.

When New Story broke ground on the village in 2019, it was called the world’s first community of 3-D printed homes. Two years and a pandemic later, 200 homes are either under construction or have been completed, 10 of which were printed on site by Icon’s Vulcan II printer. Plans for roads, a soccer field, a school, a market and a library are in the works.

Single-family homes are a good testing ground for the durability of 3-D printed construction because they are small and offer a repetitive design process without much height, said Henry D’Esposito, who leads construction research at JLL, a commercial real estate firm. They can also be constructed to tolerate natural disasters: Nacajuca sits in a seismic zone, and the homes there have already withstood a magnitude 7.4 earthquake.

The technology is promising, but some investors remain wary, and they’re watching the emergence of 3-D housing clusters closely.

In March, Palari Homes and the construction company Mighty Buildings announced a $15 million planned community of more than a dozen 3-D printed homes in Rancho Mirage, Calif. The community has a waiting list of more than 1,000.

The same month, Icon announced it had teamed up with the developer 3Strands and DEN Property Group on four 3-D printed homes in Austin, priced at $450,000 to $795,000. Icon has also printed homes in the Community First Village in Austin, a project of the nonprofit organization Mobile Loaves & Fishes that provides permanent housing to homeless men and women.

The 3-D printing market grew 21 percent last year, and Hubs, a manufacturing platform, projects that it will double in size over the next five years. 

“It really is a very effective and efficient way to build a small segment of properties, but it’s not something that applies across the broader commercial real estate ecosystem,” Mr. D’Esposito said. “We don’t know exactly how these buildings will perform over decades or what the long-term value retention will be for them. So if you’re talking to an investor or lender, that’s a big yellow flag.” ...

Échale, which has been operating in Mexico for 24 years, helped New Story select residents for the new homes based on need. It decided to sign the titles of each home not to a whole family but to the woman of the house.

“It’s to protect the family,” said Francesco Piazzesi, Échale’s chief executive. “A man will sell a house if they need to. A woman will do whatever she needs to do to save the house for her children and her family.”

Échale hires local workers to build their own communities, so plopping a 3-D printer from an American tech company into the heart of a rural village was a shift. Three-dimensional printing can create nearly any object. A partnership in Mexico is putting that theory to the test, building a village for residents living in poverty. ...