A Passivhaus-designed extension to an Edinburgh school has been officially recognised as a first of its kind in the city, receiving recognition for its groundbreaking use of energy- efficient design and materials, including cross-laminated timber (CLT).

The extension to Sciennes Primary School, located in the popular and busy Marchmont area of the capital, has officially achieved Passivhaus certification from the Passivhaus Institute, following rigorous quality checks of the £3.2million two-storey extension to the Grade B listed building.