Looking for ideas to build an ecofriendly mud house? Karai weekend home near Chennai uses mud and reclaimed wood to fuse modernity with Tamil Nadu's Nalukettu architecture. Owned by four friends, Shaji Ravi, Sanjeev Britto, Prabhakar Munuswamy, and Madhavan GG, they made the brief clear at the onset that they wanted a serene place for all their families.