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Quinze e Meio is an interior architecture and design studio based in Portugal, working primarily across residential projects, with a growing presence in hospitality.
We work closely with clients to develop spaces that are conceptually clear, refined and functionally resolved.
Our approach combines a structured process with high level of personal involvement, ensuring each project is carefully developed from concept through to completion.
With a focus on material balance, subtle textures and bespoke elements, we create interiors that feel considered, cohesive and built to last.
Co-Founders and Creative Partners
Margarida Barbosa
Co-Founder & Creative Partner
Architect and interior designer, her work combines strong project management with a refined eye for residential and commercial spaces. Inspired by travel and art, she creates interiors marked by comfort, sophistication, and lasting elegance.
Architect and interior designer, her work combines strong project management with a refined eye for residential and commercial spaces. Inspired by travel and art, she creates interiors marked by comfort, sophistication, and lasting elegance.
Ana Alves
Co-Founder & Creative Partner
Architect with a natural inclination for interiors, defined by a sharp eye for style and detail. Early experience with a renowned international brand shaped her ability to design delicate, enduring, and meticulously crafted spaces.
Architect with a natural inclination for interiors, defined by a sharp eye for style and detail. Early experience with a renowned international brand shaped her ability to design delicate, enduring, and meticulously crafted spaces.
Finance & Strategic Management
António Serôdio
Finance & Strategy
António oversees the financial structure and strategic direction of the studio, supporting its growth through the development of internal processes and commercial initiatives. His work is focused on building a structured and scalable organisation, ensuring the studio operates with clarity, efficiency and long-term vision.
António oversees the financial structure and strategic direction of the studio, supporting its growth through the development of internal processes and commercial initiatives. His work is focused on building a structured and scalable organisation, ensuring the studio operates with clarity, efficiency and long-term vision.
Marketing Management
Mariana Filipe
Marketing & Communications
Mariana leads the development of the studio’s brand and communication, shaping its positioning through rebranding, partnerships and strategic initiatives. Her work is grounded in a curated and considered approach, with a focus on building a consistent and recognisable presence aligned with the studio’s high-end positioning.
Mariana leads the development of the studio’s brand and communication, shaping its positioning through rebranding, partnerships and strategic initiatives. Her work is grounded in a curated and considered approach, with a focus on building a consistent and recognisable presence aligned with the studio’s high-end positioning.
Project Management
Tatiana Ferraz
Architect & Project Coordinator
Tatiana is involved throughout the full lifecycle of a project, with a focus on coordination, client communication and on-site execution. She plays a key role in ensuring continuity between concept, development and delivery. Her approach is practical and hands-on, with a strong sensitivity to materials, texture and the overall experience of a space. She is particularly engaged in the dynamic between design intent and how it is perceived in use.
Tatiana is involved throughout the full lifecycle of a project, with a focus on coordination, client communication and on-site execution. She plays a key role in ensuring continuity between concept, development and delivery. Her approach is practical and hands-on, with a strong sensitivity to materials, texture and the overall experience of a space. She is particularly engaged in the dynamic between design intent and how it is perceived in use.
Sara Canossa
Architect & Project Manager
Sara works across all stages of a project, from early concept through to final delivery, with a particular focus on technical detailing and the way design is translated into built form. Her approach is thoughtful and precise, guided by process, planning and a strong understanding of construction. She is particularly driven by the resolution of detail and the satisfaction of seeing a space fully realised.
Sara works across all stages of a project, from early concept through to final delivery, with a particular focus on technical detailing and the way design is translated into built form. Her approach is thoughtful and precise, guided by process, planning and a strong understanding of construction. She is particularly driven by the resolution of detail and the satisfaction of seeing a space fully realised.
Luísa Miranda
Interior Designer & Project Manager
Luísa works across all phases of a project, supporting its development from concept through to completion, with a focus on organisation, coordination and problem-solving. Her approach is structured and considered, with a strong emphasis on functionality and creating spaces that respond clearly to each client’s needs. She values clarity in both process and outcome, ensuring each project is both practical and well resolved.
Luísa works across all phases of a project, supporting its development from concept through to completion, with a focus on organisation, coordination and problem-solving. Her approach is structured and considered, with a strong emphasis on functionality and creating spaces that respond clearly to each client’s needs. She values clarity in both process and outcome, ensuring each project is both practical and well resolved.