Architecture
New builds, extensions and full renovations across two coasts, from initial sketch to building permit and beyond.
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After one conversation you'll know what your project really costs, how long it will take, and what it could look like. All before you commit to anything.
We come to you · One project slot remaining for autumn 2026
CARLO Design works on private homes, penthouses and villas across Berlin and Mallorca. We come to your property, listen to how you live, and design from there. Each home becomes a world we build together.
Founded by Charlotte Wiessner. Bauhaus-Universität Weimar. Refined at the studio of Tomás Alía in Madrid.
New builds, extensions and full renovations across two coasts, from initial sketch to building permit and beyond.
Learn more →From first moodboard to the final piece of furniture in place. Every material chosen, every dimension considered.
Learn more →A trusted network of craftsmen and contractors we have worked with for years, managed entirely by our team.
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Stephanie came to us with a penthouse that had everything, space, light, a prime location, but felt like it belonged to no one. Six months of planning. Nine months of construction. Managed entirely by our team and craftsmen. Drag the slider to see the transformation.
Read the project"After speaking with them, I knew I didn't need to look elsewhere. Thrilled with the result, highly recommend."
"They gave us excellent advice and ensured smooth implementation with their craftsmen."
"They quickly grasped my taste, found the perfect products, and arranged appointments."
"They suggested solutions at crucial moments. I recommend them with a clear conscience."
"We felt fortunate working with CARLO Design and recommend them as a local supplier of furniture and materials."
"I gladly give 5 stars. Always available and provided thought-out, economical solutions to any issues or requests."
We come to your property in Berlin or on Mallorca, or meet online if you are not yet on location. Here is exactly what you receive before you commit to anything.
We visit your property and take time to understand your vision and life.
We translate wishes into a visual direction, material, palette, atmosphere.
Developed with a trusted contractor. Honest and realistic.
A schedule with every phase mapped, so you can plan around it.
A written offer covering everything. Only then do you decide.
The full budget breakdown for your project in less than two minutes
Calculate your budgetCARLO Design is an interior designer in Berlin and an interior design studio on Mallorca. Both teams work to the same standard, with their own craftspeople on site.
A Lake House
A Japanese Penthouse
Les Beaux Pastels
A Guest Lodge
Black Beauty
Arabic Loft
Ode to Schinkel
An Earthy Cottage
A Splash of Colour
A Luminous Leaf
A Calming Refuge
Brasserie le Paris
A Guest Lodge
A Greek Mythology
Arabic Loft
A Floral Lobby
An Earthy Cottage
Venice Variations
A Japanese Penthouse
Charlotte got her degree at Bauhaus-Universität Weimar, where Walter Gropius's founding idea still holds: that architecture, interiors and art cannot be separated. It is the philosophy every CARLO Design project is built on.
She refined her European sensibility at the studio of Tomás Alía in Madrid, one of Spain's most respected design practices, before founding CARLO Design. She now leads a team of designers and architects across our offices in Berlin and Mallorca.
"Arrange your Project Check and let us come to you. We will listen, then show you exactly what is possible, with a design concept, a cost estimate and a timeline. Before you commit to anything."
We come to you · One project slot remaining for autumn 2026
