The mirror-clad pavilion, made from concrete and timber, is mounted on legs that accommodate the site's topography and avoid the roots of nearby trees.
The architect claims that the mirror-cladding 'cloak' aims to make the structure 'invisible' by reflecting its surroundings - mainly dense foliage.
Internally, a tall workspace tapers to a skylight, with glass sliding doors framing a south-facing view over London.
The London-based architect came to prominence in last year's AJ 40 Under 40 exhibition at the V&A.
The practice received the go-ahead for the scheme in October.