WED | In the rarefied world of private aviation, where Gulfstream, Bombardier, and other high-end private jets represent the apex of air travel, one designer has quietly risen to set new standards in bespoke customization and engineering excellence. Sarah Mespelt Larranaga is a premier private jet designer and project manager whose work spans more than a hundred aircraft, merging technical precision with luxurious aesthetics to create truly personalized flying environments. What makes her stand out is not just the beauty of her interiors but her holistic approach that seamlessly blends artistic vision, structural engineering, and meticulous project oversight.
From her early start in aerospace design to her current role crafting interiors for some of the world’s most bespoke jets, Larranaga’s journey encapsulates the evolution of private jet customization. Her designs encompass utilitarian cabin fit-outs to fully bespoke flying sanctuaries tailored to individual clients’ lifestyles and needs.
The Intersection of Design, Engineering, and Aviation
Larranaga’s path into aviation design began with formal training in interior design and structural engineering, followed by early career experience at Gulfstream Aerospace, a company synonymous with high-performance private jets. Her work at Gulfstream gave her deep exposure to the engineering challenges and regulatory standards that define business aviation interiors.
After Gulfstream, she broadened her expertise at Jet Aviation, specifically working on Bombardier products. This experience allowed her to develop an intimate understanding of different airframes, materials, and engineering requirements across a spectrum of private jets.
Today, she leverages that dual foundation, aesthetic design, and structural understanding to oversee full design and delivery cycles for private jet projects around the globe. Her philosophy is simple: design is quality, and quality is best achieved when form and function reinforce one another.
Crafting Interiors That Complement Gulfstream and Bombardier Platforms
The personalization of private jets is no longer limited to simple upholstery changes or color choices. Owners demand experiences that reflect their identity, lifestyle, and practical needs. Whether it’s a Global 7500 long-range Bombardier jet designed for extended international travel or a Gulfstream G700 configured for luxury business travel, Larranaga’s team approaches each project with the same level of precision and creativity.
One example of this is her collaborative work on the renowned Bombardier Global 7500, where she and design partner Christopher Nobles crafted an interior concept that divides the spacious cabin into distinct living zones, dining, entertainment, comfort, and rest, tailored for the rigors of intercontinental flight.
This approach reflects broader trends in private aviation: owners now expect cabins to function as offices, luxury lounges, and restful suites all at once, seamlessly integrating comfort with operational practicality.
Signature Projects and Industry Recognition
Larranaga’s reputation has continued to grow with high-profile projects that push the boundaries of what’s possible in private jet customization. One of the most talked-about examples is “SlivAir,” a bespoke Gulfstream G450 transformation created for Paris Hilton, which reflects a bold synthesis of brand identity and functional design. Designed in collaboration with specialists and completed at Standard Aero, SlivAir features a signature exterior color scheme and richly personalized interior details that elevate the aircraft into a mobile extension of Hilton’s personal style.
Her work is not simply decorative; it’s recognized within professional circles as well. Larranaga has been shortlisted for awards such as the International Yacht & Aviation Awards for private jet design concepts — including projects for conceptual interiors on Gulfstream G700 jets.
These accolades underscore how design innovation, when paired with technical excellence, can transform perceptions of what private aircraft interiors can be.
A Designer for the Modern Private Jet Market
What distinguishes Larranaga in the competitive field of private jet design is her comprehensive approach. She doesn’t just create beautiful cabin schemes; she manages projects from initial ideation through white-glove delivery, ensuring quality control, schedule management, and structural integrity throughout. This level of oversight is essential when working with aircraft that must meet strict safety, weight, and performance standards.
Her background as both a designer and an aviation structures engineer allows her to speak fluently with clients, vendors, completion centers, and regulatory bodies, a rare combination in an industry where aesthetic vision and aviation compliance must coexist.
In practical terms, this means that whether she’s working on a Bombardier Global 7500 concept or tailoring a custom Gulfstream cabin, every detail, from seat configurations to avionics integration, is engineered with purpose.
The Growing Demand for Custom Private Jets
The broader market for custom private jets continues to expand. According to aviation industry analyses, the number of private jet registrations worldwide continues to grow, driven by both business and high-net-worth individual travel trends. As more owners take to the skies, the expectation for high-end interiors and personalized experiences has become a defining factor in aircraft ownership.
Customization in the private aviation world now encompasses not only design and materials but also advanced technology integration, from cabin management systems (CMS) and high-speed connectivity to ergonomically optimized seating and bespoke furnishing solutions.
Larranaga’s projects reflect this evolution. Her work often incorporates state-of-the-art materials, cutting-edge avionic upgrades, and customized cabin layouts designed to enhance both the travel experience and the long-term value of the aircraft.
What Clients Want — And Why Design Matters
Owners of Gulfstream and Bombardier jets don’t just seek luxurious surfaces; they want interiors that are functional, efficient, and reflective of their personal brand. This includes considerations such as:
- Ergonomic seating optimized for long flights
- Integrated technology for entertainment and connectivity
- Weight-saving materials that preserve range and performance
- Bespoke finishes that highlight individual style
These trends emphasize why a designer with deep experience in both Gulfstream and Bombardier platforms is particularly valuable. Larranaga’s ability to navigate both aesthetic and technical complexities means clients achieve spaces that are not only visually stunning but also performance-aligned.
A Legacy of Craftsmanship and Technical Excellence
Looking ahead, the future of private jet design will be shaped by sustainability, advanced manufacturing methods, and seamless integration of comfort and technology. Larranaga’s work already anticipates many of these trends, from innovative material choices to flexible cabin configurations that adapt to different travel needs.
Her career reflects a commitment to craftsmanship, innovation, and client focus, traits that have made her a respected figure in the private jet design community.
Conclusion: Redefining the Private Jet Experience
In an era where travel is not just about getting from point A to point B, but about the total experience of flight, Sarah Mespelt Larranaga stands out as a designer who brings vision, precision, and personality to each project. Whether transforming a Gulfstream into a custom flying salon or redefining a Bombardier Global cabin for long-haul comfort, her work exemplifies how modern private jet customization blends artistry with engineering excellence.
As private jet owners seek ever more bespoke solutions, designers like Larranaga, with deep technical grounding and a refined aesthetic sensibility, are shaping what luxury aviation means in the 21st century. For clients around the world, the ability to merge comfort, identity, and performance in the sky has become a defining characteristic of elite travel, and Sarah Mespelt Larranaga’s influence on that narrative is unmistakable.
