Urban heritage areas in the city represent an important part of urban image because they constitute some of the key built areas in the city; however, many of them are very damaged losing part of their historical value. The research analyzes the changes in the urban infrastructure, under a walkability focus, and their incidence on the preservation level for the case of the Heritage Urban Environment of 15 de Junio in the city of Huancayo in Peru. The urban phenomena are presented based on documentary review and semi-structured interviews to 12 people with semi-permanent residence in the area for about 50 years. Finally, a hierarchical multiple linear regression model is used to evaluate la predictability capability of the preservation state based on the urban infrastructure. It was recognized that walkaway size, cross easiness, night use of public space and building use contributed significantly to the predictability of preservation levels in the area of study.