BBJ has been turning Boeing’s commercial airliners into opulent private jets for the world’s wealthy elite since 1996.

BBJ does not sell many planes, with just 261 orders in company history, but the aircraft it does turn out are works of flying art.

In addition to the 777X, BBJ has developed private-jet versions of the 737, the 787 Dreamliner, and the 747.

Here is a closer look at the new BBJ 777X:

The BBJ 777X is based on the new Boeing 777X airliner.

Like the commercial version, the BBJ 777X will be available in both the 777-8 and the larger 777-9 variants.

Boeing says the BBJ 777-8 has a range of 13,400 miles, while the BBJ 777-9 can go for up to 12,700 miles. That is several thousand miles farther than the airliner versions of the planes can fly.

Boeing says the BBJ 777X is the longest-range private jet ever made, meaning flights from Sydney to London or Seattle to Dubai are possible.

Power comes from GE’s massive GE9X engine, which it says returns 5 per cent lower fuel consumption than rival power plants while significantly lowering emissions.

The 777X boasts a 236-foot wingspan, along with a cabin that is seven foot nine inches tall and nearly 20 feet wide.

The 777-9 is 33 feet longer than the 777-8. The 777-8 boasts 3,256 square feet of interior space, while the 777-9 has 3,689 square feet, or about as much as a large suburban home – a very luxurious suburban home.

Boeing showed off interior concepts for the 777X from three firms. The first, from Jet Aviation, opens with a stylish entryway.

To the right of the entryway is a massive lounge …

… which borders a stylish dining room …

… and a bar.

At the back of the interior is a large master suite, complete with a master bath and wardrobe.

Next up is the interior concept by Unique Aircraft Design. Here is the entryway.

To the right is an open lounge.

Towards the back of the plane is the dining room, near a compartment of first- and business-class seats.

To the immediate left of the entryway is the office.

Toward the front of the plane is the master bedroom …

… and master bath.

Finally, there is a design from Greenpoint Technologies. Here is the entryway.

Each lounge is divided with different furnishings.

Behind the main lounge is a guest bedroom …

The Greenpoint design’s highlight is the master suite at the back of the plane.

Behind the bed is a full walk-in wardrobe.

Behind the wardrobe is the master bath.

There are separate vanities.

BBJ did not say how much the custom interiors would cost. It’s safe to say it would be in the hundreds of millions of dollars.

The Boeing 777-8 has a list price of US$394.9 million. The larger 777-9 costs US$425.8 million.

The Boeing 777-9 is expected to enter service in 2020, with the 777-8 following soon afterwards.

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