Factory-Built Houses; What, Where and How?

As the race to 3D print houses at large scales continues to gain momentum, companies come up with unique ways to stay ahead of the game.

The What

Mighty Buildings is a construction technology company based in Oakland, California who has been working to deliver factory-built homes for customers. Their construction process involves 3D printing, robotics, and automation and Mighty Building claims to be able to print a 350 square feet house in 24 hours, although the whole process including unit selection, site assessment, entitlement service, permitting process, and delivery, could take months.

They offer sizes ranging from 350 square feet to 1440 square feet.

The Where

The company is also working on a project taking place in Rancho Mirage, California. Their goal is to 3D print a community consisting of 15 homes, in an affordable and sustainable manner.

Looks pretty real but isn’t a reality yet. Whoever made this, please give me lessons.

The How


The material Mighty Buildings uses can be printed horizontally in the air without support which takes down the challenge of overhangs.

“One way to think about it is, you know when you go to the dentist, and they use the UV curable fillings and everything, if you take that and then you combine that material with mineral filler, you get… it’s basically a synthetic stone.” — Sam Ruben, CSO & Co-Founder.

Sam describes the extensive testing of the material and says its built to last.

However, the company is also reportedly experimenting with a new, fiber-reinforced version of the material that has similar strength characteristics to steel which will reduce material usage and allow for multi-story construction.

3D Printer

According to UL [Underwriter’s Laboratories], its the world’s largest light-based printing system. — Sam Ruben, CSO & Co-Founder

The printer is a gantry-style printer and is named “The Big G”. It shines Ultraviolet light onto the printing material and cures it almost instantly. It is supposedly able to print everything from panels to full, room-size volumetric modules.



In the case of smaller houses, such as the 350 square feet unit, the unit is loaded onto a truck and delivered to the site, where it is carefully placed and all of the finishing processes are carried out.

For larger models, the company plans to ship the house in segments, which would be chemically sealed together on-site.


“Often times, you’ll hear them say they can print in 24 hours or 48 hours but then you read the fine print and you read that it was done over a matter of days or weeks… We can print a 350 square foot module in less than 24 hours and that’s actually 24 hours, not 24 hours over a matter of days and weeks.”


These prices seem to be higher than what other 3D housing printing companies seem to boast. Nonetheless, a much deeper analysis is required to calculate costs and efficiency, especially where demographics also seem to have a large influence.

The Future

As the major industries in today’s age are moving towards automation, construction could be considered to be slightly lagging behind. More research and development is required in order for this technology to be considered as the primary method for construction which includes feasibility, and complex operation abilities.

Like this article? Please show support by liking (or rather applauding) it! To follow me throughout my journey of learning new things and sharing them, subscribe to my newsletter, visit my Youtube channel, connect with me through LinkedIn, and follow me on Medium!

Innovator at The Knowledge Society