Boeing’s largest passenger jet, the 747-8 can carry more than 450 passengers in a cabin 20 feet wide and more than 200 feet long. Using this massive space as a canvas, Greenpoint Technologies, based in Kirkland, Wash., recently completed work on a 747-8 with a VIP interior for a private owner.

This is the first jet of its kind to be outfitted for personal use, and Greenpoint has released few details about it, declining to name the client or provide photos of the finished product. But the company has release…