LASSA is an architecture practice based in London, co-founded in 2009 by Theo Sarantoglou Lalis and Dora Sweijd. LASSA operates at the intersection between the fields of Architecture, Landscape and Art. As a practice, we have two main concerns. On one hand, the behavioral attributes of architectural form for its capacity to stimulate the corporal experience of space, to enhance socialization and the collective and on the other hand, the politics of construction and a complete rethinking of building procedures.

LASSA is strongly engaged with technology for its pivotal role in the way we collaborate, design and fabricate architecture. Current work includes commissions from both the public and private sectors in Europe, the Middle East and Asia. With experience working in 18 countries, our team has developed expertise in the delivery of projects of great sophistication with a particular control over the manufacturing process and cost.

LASSA is concurrently engaged in academic research through the work of their Master’s studio, Diploma 17, at the Architectural Association and through workshops and lectures worldwide. Besides teaching at the AA, our team has held teaching positions at universities such as Harvard, Columbia, the Bartlett, Lund University and Chalmers. In 2010, LASSA was awarded a REA European research grant for COELUX, an advanced lighting system, in partnership with world-leading specialists as well as research institutions throughout Europe and Switzerland.

LASSA has won a number of international awards for their Villa Ypsilon and the the Khi House such as Idea-tops (Shenzhen), Big See Award (Slovenia), Design Educates (japan) Designboom and others. LASSA was a finalist for a number of international awards, including the Chernikov award and the Lisbon Biennale award. LASSA’s work has been featured at TED Brussels, a Smithsonian TV documentary on Greece(Aerial Greece) and a number of television and radio shows internationally. LASSA has been a chartered architecture company with the Architects Registration Board (ARB) in London since 2004. LASSA  has been a chartered architecture company with the Architects Registration Board (ARB) in London since 2004.



Our expertise lies in bespoke design combined with innovative, constructive strategies that make use of state-of-the-art digital design and manufacturing processes. Our team believes that demanding constraints of scale, budget and location can inspire innovative solutions. We are interested in the use of unconventional geometry as a means of integrating multiple design objectives into one form. These design parameters can include programmatic organization, environmental performance, structural optimization or acoustics, to name a few. Our experience in managing and delivering international projects of great complexity is supported by our network of consultants. This allows us to develop efficient working methods that benefit from both local and global expertise.





Theo Sarantoglou Lalis   I   Architect ARB, London.

Theo Sarantoglou Lalis is a French and Greek architect. He currently teaches a Master’s studio at the Architectural Association in London. He has taught postgraduate studios at Harvard and Columbia and undergraduate studios at Chalmers and LTU in Sweden. He has lectured internationally and run architecture and urban design workshops in the US, South America, Europe and Asia.

He received his masters from the Bartlett school of Architecture (UCL) in London. He has experience practicing architecture in 18 countries and is a registered architect since 2001.


Dora Sweijd   I   Architects Board, Brussels.

Dora Sweijd received her master’s from Bartlett in London and is a registered architect in Belgium. She currently teaches at the Architectural Association in London and is a visiting professor at Chalmers University in Sweden. She has run architecture and urban design workshops in Rio, Nanjing, Antwerp and Lund. She was a visiting professor at Lund University.



Jocelyn Arnold   I   AA School, London.

Raz Keltsh  I   AA School, London.

Jonathan Cheng   I   AA School, London.

Philip Doumler  AA School, London.

Marc Martinez Marti  I  ENTSAP, Madrid.

Stanislas Gimel  I  ESA, Paris.

Kasper Ax  Bartlett School of Architecture, London.

Cyrus Ardalan  I  ESA, Paris.

Yu Zheng  I  AA School, London.

Yousef Al-Mehdari  I  Bartlett School of Architecture, London.

Luke Tan  I  AA School, London.

Ole Wolthers  I  AA School, London.

Greg Spaw  I   Harvard GSD, Cambridge.

keehyun Ahn  I  UC Berkley, San Francisco.

Lee Su Huang  I  Harvard GSD, Cambridge.

Andy Bryant  I  UCLA, Los Angeles.

Sebastian Andia  I  AADRL, London.

Perrine Planche  I  AA School, London.

Doyeon Cho  I  AA School, London.

Valeria Garcia  I  AA School, London.

Theo Groussopoulos  I  IAAC, Barcelona.

Perrine Planche  I  AA School, London.

Thomas Jensen  I  AADRL, London.

Rodrigo Chain  I  AADRL, London.

Luis Sacristain  I  ENTSAP, Madrid.

Luc Isri  I  ESA, Paris.

Beatrice Campos  I  ESA, Paris.

Nikos Klimentidis  I  AA School, London.




Kavvada Residences      I   Residential   I   600 m2   I   Lefkada, Greece   I   Under Construction   I   2018-

Dimitrov Residence      I   Residential   I   150 m2   I   Chalkidiki, Greece   I   Planning   I   2018-

Linear B   I   Hospitality   I   2077 m2   I   Mavrovouni, Greece   I   Planning   I  2018-

Khi House   I   Housing   I   180 m2   I   Kamaria, Greece   I   Under construction   I   2017-

Villa Ypsilon   I   Housing   I   150 m2   I   Finikounda, Greece   I   Completed   I   2017

Pocket Nursery   I   Education   I   120 m2   I   Braine le Compte, Belgium   I   Completed   I  2016

Office Archipelago   I   Office   I   400 m2   I   Brussels, Belgium   I   Completed   I  2015

Huanan Port Authority   I   Office, Retail, F7B   I   72,000 m2   I   Huangzhou, China   I   Competition (2nd Place)   I  2014

Wanyu City   I   Office, Housing, Retail, F&B   I   425,000 m2   I   Xi’An, China   I   Planning   I  2014-

Civic Center   I   Exhibition, Theater, Sports   I   3,500 m2   I   –   I   Competition    I  2013

Weizhi Headquarters   I   Office, Housing, Retail, F&B   I   92,000 m2   I   Xi’An, China   I   Technical Design   I  2013-

Lambda Offices   I   Office   I   135,000 m2   I   Kuwait City, Kuwait I   Tender    I  2012-

Kyclo Offices   I   Office   I   152,000 m2   I   Kuwait City, Kuwait I   Developed Design   I  2011-

Seoul Station Park  I   Office,Housing,Convention Center, Park   I   290,000 m2   I   Kuwait City, Kuwait I   Competition 3rd Place   I  2010





Architectural Association, London  I   Diploma unit 17  (4th and 5th Year)  I  Unit Master   I   2010-19

Architectural Association, London  I   Intermediate unit 17 (2nd and 3rd Year)   I   Unit Master   I  2009-2010

Chalmers University, Gotheburg  I   Bachelors Programe 2nd and 3rd Year  I   Visiting Professor   I  2014-16

Lund Technical University  I   3rd Year   I   Visiting Professor   I  2009

Harvard GSD, Cambridge  I   M Arch  I   Teaching Associate  I  Fall 2007

Columbia G.S.A.P.P, Newy York  I   M Arch  I   Teaching Associate  I  Spring 2007



Architectural Association, London  I   2019

IBK2 Universitat, Stuttgart   I   2018

Centre Pompidou, CANAL   I   2018

TED X Brussels   I   2018

Torcuato Di Tella, Buenos Aires   I   2018

CAD, Brussels   I   2018

Harvard GSD, Cambridge  I   2017

Architectural Association, London  I   2017

Melbourne University   I   2017

Tallin Biennale   I   2017

BOZAR, Brussels   I   2017

Tokyo   I   2016

Harvard GSD, Cambridge   I   2016

ILEK, Stuttgart   I   2016

Architectural Foundation Rio de Janeiro   I   2015

ESA Ecole Speciale, Paris   I   2015

Chalmers University, Gothenburg   I   2015

IMAL, Brussels   I   2015

Lund Technical University  I   2013

Ningbo University  I   2013

Hefei University  I   2013

ULB University, Brussels   I   2013

University of Nicosia   I   2013

Nanjing University  I   2012

Tsinghua University, Beijing  I   2012

Shenzhen University  I   2012

Guangzhou University  I   2012

Xi’An University  I   2012

Shenzhen University  I   2012

Teheran University  I   2011

Lund Technical University  I   2011

Korean Institute of Architects  I   2011