Wired reports:

According to plans viewed by WIRED and a source familiar with the development, the partially completed compound consists of more than a dozen buildings with at least 30 bedrooms and 30 bathrooms in total. It is centered around two mansions with a total floor area comparable to a professional football field (57,000 square feet), which contain multiple elevators, offices, conference rooms, and an industrial-sized kitchen.

In a nearby wooded area, a web of 11 disk-shaped treehouses are planned, which will be connected by intricate rope bridges, allowing visitors to cross from one building to the next while staying among the treetops. A building on the other side of the main mansions will include a full-size gym, pools, sauna, hot tub, cold plunge, and tennis court. The property is dotted with other guest houses and operations buildings. The scale of the project suggests that it will be more than a personal vacation home — Zuckerberg has already hosted two corporate events at the compound.

The plans show that the two central mansions will be joined by a tunnel that branches off into a 5,000-square-foot underground shelter, featuring living space, a mechanical room, and an escape hatch that can be accessed via a ladder. “There’s cameras everywhere,” David says—and the documents back this up. More than 20 cameras are included on plans for one smaller ranch operations building alone. Many of the compound’s doors are planned to be keypad-operated or soundproofed. Others, like those in the library, are described as “blind doors,” made to imitate the design of the surrounding walls. The door in the underground shelter will be constructed out of metal and filled in with concrete—a style common in bunkers and bomb shelters.

According to sources and planning documents reviewed by WIRED, the compound will be self-sufficient, with its own water tank, 55 feet in diameter and 18 feet tall—along with a pump system. A variety of food is already produced across its 1,400 acres through ranching and agriculture. Brandi Hoffine Barr, spokesperson for Mark Zuckerberg and Priscilla Chan, declined to comment on the size or bunker-like qualities of the project.

The cost rivals that of the largest private, personal construction projects in human history. Building permits put the price tag for the main construction at around $100 million, in addition to $170 million in land purchases, but this is likely an underestimate. Building costs on the remote island are still higher than pre-pandemic levels.

That price for a private residence is unparalleled in the local construction industry—as is the level of secrecy and security. “The only other time you see that is when you’re doing secure military installations,” says one local construction industry official affiliated with the site. “For a private project to have an NDA attached to it is very rare.”

With such scale and complexity come workplace accidents. In February, for instance, a crane traveling down a steep, narrow road on the property fell off an edge—careening down a hill with the operator inside. The driver, a 53-year-old Kauai local, suffered serious injuries and was transported to the hospital in stable condition. He has since returned to the site, Hoffine Barr tells WIRED.

In August 2019, 70-year-old security guard Rodney Medeiros, who was under an NDA that, from what his family understood, prevented him from discussing specific details about his job, ended a 12-hour shift standing watch at a beach by the property. He was a contracted worker and was only hired when Zuckerberg was visiting—which he was that weekend, according to court documents reviewed by WIRED. These documents, later filed on behalf of Medeiros’ children, claim that rainy conditions made it impossible for an ATV to pick him up, as was standard practice. Medeiros began making his way up a steep trail to reach the compound’s exit, and midway up the path he suffered a heart attack. He was transported to a hospital, where he died hours later. [Continue reading…]