This is basic study of Adaptation Process to the Home Environment of Peruvian Immigrants of Japanese Descent in Japan. The study is intended to identify the trends and characteristics of the adaptation of Peruvian immigrants to their new home environments in Japan, in addition to the way these recent immigrants have organized their lives to build a new home for themselves. Investigations described in this paper specifically examine personal changes that occur when the immigrant relocates into Japanese society. History repeats itself, so they say: the return migration of Peruvians of Japanese descent was enabled by the amendment of the Japanese Immigration Act of 1991. From that year around 50,000 Peruvians of Japanese descent have migrated to Japan seeking for a new place to call home. They were welcomed in the 1990s to fill gaps in employment markets. They were willing to work at unattractive jobs in Japan, the so-called 3D Jobs, Dangerous, Dirty and Difficult (Oizumi Poketto Gaido, 1996). The grim economic situation in South America made relocation to Japan an economically attractive option for these Peruvians. Based on a questionnaire survey and a survey of private living spaces, we have established correlations between immigrants’ adaptation to Japanese society and their relation to their respective home environments. We found correlations between immigrants’ attitudes and their residential and living environments.