MATA Architects has created a flexible extension for a north London mid-terrace home with an unconventional shutter system that can be adjusted to match its use and weather conditions.

The project brief for the Black Box extension was to deliver a space that could function both as a home office and as an occasional guest bedroom with an en-suite bathroom.

MATA said it wanted the extension to have large windows even though the site is overlooked from multiple angles, and so explored ways to introduce large glazing at the same time as regulating levels of shading, natural daylight, privacy and security at different times of the day.

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