Global warming has been the biggest world problem since 19th century, leading us into famous architectural problem such as sick building syndrome. These problems seemed to be neglected by ‘human’ on earth, including architects who choose to create modern and minimalist residences with no ecological consideration. Clusters with identical materials and styles grew as new promising business properties, yet in the other hand it creates new ecological problems. Eko Prawoto, as an Indonesian architect has been living with ecological architecture conception to solve this global problem. He was awarded as the winner of pioneer category in Indonesian Cultural Award of Yogyakarta Special Regional Cultural Service in 2021, through his architectural idea of going back to nature and break the stereotype of expensive and outdated green architecture. This qualitative research aimed to revealed Eko Prawoto’s tectonic architecture expression in his two different residential works, conducted by biography architecture method. The result showed how eco-architecture applied in a very simple, detail, affordable and modern way through rural ideology of material selection, structure and construction. This research became new perspective of tectonic architecture ability to solve world’s ecological problems in rural ideology.