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A rendering of the house to be built on Millbrook Lane in Riverhead. (Courtesy of Stephen King)

A home that’s being marketed as the first 3D printed house in the country was listed in Riverhead this week.

The 1,400-square-foot, three bedroom Millbrook Lane home is to be built in large part through robotic technology and is listed for $299,999 by Stephen King of Realty Connect USA. It will be built using concrete and is energy efficient.

“It’s amazing,” Mr. King said of the house, which he listed Monday. “It’s the first one in the world to ever come on the market.”

The house, which also features a 2.5 car detached garage, will be built by SQ4D Inc., a 3D home design firm in Patchogue.

Mr. King, who is also based in Patchogue, met SQ4D’s founder through a young business owners networking group he started in the community.

Kirk Andersen, the 31-year-old co-owner and director of operations for SQ4D, said he got into 3D building as a hobbyist. He launched his company by practicing building larger-scale structures in his backyard.

The leap to bringing a 3D house to market began with the construction of a model home SQ4D constructed on Middle Road in Calverton.

“The model was to prove the concept to the [Riverhead Town] building department,” he said. “To show them this isn’t just a shack. Riverhead was very welcoming and progressive-minded.”

He believes it to be the first time a building permit was ever issued for a 3D house anywhere, saying previous structures built by other companies using a similar technology have been for commerical use.

Mr. Andersen said his company’s plans for the future include expanding their 3D building process on a national and even global scale.

SQ4D developed its Autonomous Robotic Construction System technology to build the footings, foundations, interior and exterior walls on site of the homes they intend to build. The rest of the work can be done by a crew of just three people, Mr. Andersen said.

“There is a need to combat all of the rising costs [in home construction],” Mr. Andersen said. “Automation is a way to do that.”

The process keeps the cost of the home down, meeting the needs of a large segment of the market, he said.

“It’s quicker, stronger, cheaper and better,” added Mr. King. “It’s remarkable.”

Mr. Andersen, a Patchogue native who launched his company in 2017, said he believes the ability to meet the needs of Long Island residents searching for more affordable houses outweighs the downside of reducing the number of jobs on a build.

“Eventually there is going to be more and more machines and the machines are going to replace some jobs,” he said. “But these are some of the more high cost, dangerous jobs.”

Mr. Andersen said ultimately he wants to change people’s minds about what a 3D house can be by proving its feasability. The first step is the newly listed property in Riverhead.

Mr. King has scheduled a pair of open houses for next weekend from noon to 3 p.m. on Saturday, Feb. 6 and Sunday, Feb. 7. Mr. Andersen plans to be on hand to discuss the technology.

The design includes two bathrooms and an open floor plan.

“My phone has been ringing off the hook,” Mr. King said.