In 2014 there were 243 private households in Fideris with an average household size of 2.36 persons. Of the 210 inhabited buildings in the municipality, in 2000, about 62.9% were single family homes and 15.2% were multiple family buildings. Additionally, about 42.9% of the buildings were built before 1919, while 11.4% were built between 1991 and 2000. In 2013 the rate of construction of new housing units per 1000 residents was 3.43. The vacancy rate for the municipality, , was 1.59%.