LASSA Architects

LASSA Architects is a design-led practice founded in 2009 by Theo Sarantoglou Lalis and Dora Sweijd. Based in London, Brussels, and Greece, the studio blends architecture, technology, and academic research. Known for its experimental use of geometry and digital fabrication, LASSA emphasizes innovation through constraint. The founders also teach at the Architectural Association in London, reinforcing the firm’s strong ties to academia and cutting-edge architectural discourse.

2 Articles

THYTA House: A Sustainable Mountain Retreat in Lefkada, Greece

THYTA House, designed by LASSA Architects, is a serene family retreat nestled in the rugged mountains of Lefkada, Greece. This thoughtfully crafted residence balances innovative design with environmental sensitivity, embracing the island’s breathtaking natural landscape.

By LASSA Architects Published: 28/09/2024 Updated: 14/05/2025 2 min read

Villa Ypsilon by LASSA Architects: A Seamless Fusion of Architecture and Landscape

Nestled in the olive groves of Finikounda in southern Peloponnese, Villa Ypsilon by LASSA Architects redefines sustainable summer living. Designed by architects Theo Sarantoglou Lalis and Dora Sweijd of the London and Brussels-based LASSA Architects, this 1,614 sq ft residence stands out for its innovative Y-shaped green roof that merges fluidly with the terrain—blurring the line between architecture and nature.

By LASSA Architects Published: 16/06/2018 Updated: 14/05/2025 2 min read