The original side return did not form one space with the kitchen - so the space wasn't utilized well. We came to completely remove the side return extension, build new and join it with the kitchen. The 1st floor side wall to be supported by steel beam was over 6 meters - the steel structure had to be adequate: steel box frame was installed. The challenge here was to correctly carry out the roofworks: neighbours had their side return extension built illegally and protruding over the boundary line - we had to come up with some ideas on how to do it without asking the neighbours to remove their roof. The fish or snake scale like cladding gives this extension a quite unique look. We installed an underfloor heating in the whole of ground floor, carried out the rest of internal works in the whole ground floor.