Tenet is an architecture studio based in Milan and led by Leonardo Chironi, Stefano Passamonti, and Letizia Pella. With a cosmopolitan outlook and a multidisciplinary approach, the practice offers integrated design and consultancy services across architecture, MEP systems, energy, structural engineering, and safety. Tenet works across all scales—from selected private commissions to design competitions—covering residential developments, commercial spaces (including shops, restaurants, offices, and pop-up stores), and high-end housing such as short-term rental apartments.

At Tenet, design is both a productive process and a cultural practice, where professional expertise is grounded in a strong theoretical and critical foundation. With a focus on transformation and adaptive reuse, the studio places particular value on working with existing conditions—seeking precise, context-sensitive solutions that emphasise clarity in construction, discreet integration, and ease of use. Each project is shaped by the belief that constraints can generate new spatial and conceptual possibilities.

Tenet pursues innovation and research in every project, in Italy and internationally, drawing strength from the close connection between professional practice and academic work. The partners are actively involved in teaching and research, ensuring a continuous exchange between theoretical investigation and built reality.

Tenet’s work has been featured in international publications such as Abitare, Area, Domus, Elle Decor, Industria delle Costruzioni, Dolce Vita, and The Architect’s Newspaper, and has been exhibited at institutions including the Triennale di Milano, Drop City, and the Milan Chamber of Architects. In 2025, Artribune named Tenet one of Italy’s top emerging architecture studios.

Partners

Leonardo Chironi

Founder/Partner

Leonardo Chironi graduated with honours from the Politecnico di Milano, having also studied at Tongji University in Shanghai. He has worked with various architectural firms in Milan, combining his professional practice with academic activity as a teaching assistant.

OAMi n.18730

Stefano Passamonti

Founder/Partner

Stefano Passamonti studied architecture at Hochschule Konstanz, Politecnico di Milano and FAU-USP São Paulo, graduating in 2014. He attended Luigi Snozzi’s Design Seminar, Porto Academy/FAUP and received a PhD from University of Genoa in 2022. He has published articles in specialised journals and delivered lectures at various institutions. 

OAMi n. 19129

Letizia Pella

Partner

Letizia Pella graduated from the Politecnico di Milano with a thesis project in São Paulo, after an exchange programme at FAU in Quito. She began her career abroad in Jeddah and Barcelona. In 2017, she returned to Italy, expanding her expertise to include the furniture design industry.

OAMi n. 21281

Collaborators since 2020

Marta Coppetti
Natalia Moroni
Carla Piotti
Giorgia Santilli
Carlotta Garavaglia
Gabriele Licciardi
Antonio Soramel
Guillermo Sanchez Cardenas
Riccardo Brollo
Francesca Cerro
Allegra Guerci

Giovanni Grinta
Gaia Iaccheri
Giacomo Ontano
Amelia Nowak
Davide Rapezzi
Alessio Rebecchi
Alice Spinelli
Federico Santamaria
Elia Villotta
Tomas Carvelli
Sofia Brunelli

Mattia Bassani
Sofia Vedovello
Gianmarco Mincione
Bianca Balzarini
Massimiliano Aloi
Giulia Redivo
Giovanni Sironi
Paolo Raffaele Campobasso
Rubina Rajaratnam
Alessandra Visentini
Ludovica Mauri

Architectural Services

  • Feasibility Studies and Due Diligence

  • Planning Applications (CILA, SCIA, DIA, PdC)

  • Concept, Development, and Technical Design

  • Construction Management

  • Artistic Supervision

  • Specifications and Bills of Quantities

  • Land Registry Services

  • Energy Certification and ENEA Compliance

  • Declarations and Certifications

  • Feasibility Assessments and Due Diligence

  • Landscape Committee Reviews

  • Project Management

  • Administrative Procedures

  • Tender Documentation Preparation

  • Expert Technical Advice

  • Comprehensive Turnkey Renovations

Clients

A2A

Finmark S.r.l.

C.M. S.r.l.

Sfera S.p.a.

Webscience

PCMC

RODCAT Srl

Partnerships