PriestmanGoode's 'Private Sanctuary' Concept Turns Airbus A350 Rear Cabin into Flying Villa; Luxurylaunches Estimates $550 Million

PriestmanGoode's Private Studio division unveiled Private Sanctuary in 2025, a private aircraft interior concept designed around the rear section of an Airbus A350 cabin. The Airbus A350-1000 is designed to carry up to 480 passengers and has a listed price of approximately $366.5 million. The concept swaps that passenger capacity for a residential-style retreat that uses the full width of the rear fuselage, with windows on both sides and no conventional corridor alongside the suite.

The design is divided into four main zones. The first is an adaptive living room that can serve as a lounge, cinema or private gym, using movable seating, panels, integrated lighting and concealed storage; a screen could link the owner with a regular fitness trainer on the ground, depending on the aircraft's eventual connectivity system. The second is a private area with a floating desk in an illuminated alcove, which can become a meditation or therapy room with the addition of a massage table. The third is a full-width bedroom and dressing suite, where a central multifunctional unit works as part of the layout.

Four studios contributed specialist finishes. F/LIST's F/LAB supplied custom Aenigma decorative panels, London Embroidery Studio created three-dimensional embroidery inspired by antique tapestries, and Atelier Midavaine and Nusom produced lacquer panels with ginkgo leaves. Nature Squared made a desktop from discarded feathers from the food industry.

PriestmanGoode has not disclosed a customer, price or delivery schedule, and Private Sanctuary remains a concept rather than a completed aircraft. Luxurylaunches estimates that an A350 fitted with this interior could cost around $550 million. The concept won the Bizliners / New Concept Offering award at the Elite Wings Aviation Summit 2026.

Interiors for airliner-based VIP aircraft sit at the far end of the business-aviation market, where the cabin is commissioned as architecture and the airframe is almost secondary. A design house typically shows a concept like this one to signal capability to the small group of owners and completion centres able to buy at this scale, which is why an award can matter more to the studio's pipeline than any sales announcement.

The $550 million figure should be read for what it is: Luxurylaunches' own estimate, built on top of the A350-1000's listed price of roughly $366.5 million. It is not a quotation from PriestmanGoode, which has named no price, customer or delivery date. The gap between the two numbers is the estimate's implied cost for the interior and its finishing work, and only a commissioned project would reveal whether that holds.

The next milestone that would turn this from showcase into market signal is a named buyer or completion partner. Until one is disclosed, Private Sanctuary measures design ambition at the top of the segment, not demand for it.