About Us

De Hasse is a British architectural design studio first established twenty years ago by Giselle De Hasse.  Known originally for her expertise in decoration and bespoke furniture, Giselle has gained a reputation for creative interior architecture.  Listening carefully to her clients to understand the way they live is fundamental to the design process, underpinned by personal service and attention to detail.

Giselle’s innovative approach to space configuration for anything from small cabins and cottages, to large historic houses and contemporary projects, is progressive and fresh, and the foundation of a growing portfolio of original and luxury design projects. 

Her fascination for harnessing natural light to innovate the most challenging of spaces underlines her enthusiasm for creative thinking and ensures her work is a combination of practical, yet inspired spacial planning, pared-back natural materials, and a touch of the unexpected. 

Combine all of this with experience in producing creative architectural lighting layouts, the ability to design anything bespoke from scratch and draw in 3D, and knowledge of furnishings specification and procurement, and the journey towards the creation of an innovative home begins.

What services do you provide?

Interior Design, Interior architecture, Bespoke Furniture & Storage Solutions, Architectural design, Spacial planning, Finishes specification, Lighting layouts, Bespoke upholstered furniture, Bespoke timber beds, Architectural metal work, Bespoke stone basins, Specialist wallpaper

How would you describe your style?

"A combination of elegant simple bohemian aesthetic, and raw natural finishes."

Please describe a recently completed project or tell us about the bespoke service that you offer

"Amongst four recently completed new residential projects for which I have consulted on all spacial configurations, I have been working on a 7,500 sq ft new property set within historic grounds. I lead the design for this luxury project, a complex build of exceptional detail, quality and style creating the concepts for all twenty-eight spaces within the house including; 

Bespoke joinery 

Bespoke stone basins

The kitchen 

Seven Bathrooms

The lighting layouts

The main fireplace and stairwell

Bespoke external architectural metalwork

Finishes specification to include the swimming pool and spa 

Bespoke upholstered sofas, chairs and headboards, 

All furnishings and decoration inclusive sourcing antique pieces.  

Over a three-year construction period, collaborating with the project management team, architect, contractors and other specialist consultants, my vision and creativity helped to drive the project towards the completion of a remarkable luxury property designed to embody wit, elegance and warmth."

Richard Seymour photography