XTEN Architecture

XTEN Architecture is an award-winning Los Angeles-based architecture studio known for its innovative, context-driven designs that blur the boundaries between architecture, landscape, and interior space. Founded by principal architects Monika Häfelfinger and Austin Kelly, the firm operates at the intersection of art and architecture, creating contemporary spaces that are both sculptural and functional.

Since its inception, XTEN has built a reputation for producing elegant, modernist buildings that respond harmoniously to their environment. Their design philosophy emphasizes open spatial planning, natural light, material honesty, and the seamless integration of indoor and outdoor living. This approach is especially evident in their residential work across Southern California and internationally, including projects in Switzerland, South Korea, and the Middle East.

The firm’s portfolio spans a wide range of typologies—residences, cultural institutions, commercial buildings, and bespoke interiors—each tailored to the client's vision and the project’s unique context. XTEN’s architectural process is rooted in rigorous analysis, collaborative engagement, and a strong emphasis on craftsmanship and detail.

XTEN Architecture’s work has been featured in numerous international publications and exhibitions, earning accolades for its bold geometry, sustainable design practices, and ability to transform everyday living into extraordinary spatial experiences.