In 2014 there were 401 private households in Sils im Engadin/Segl with an average household size of 1.91 persons. Of the 253 inhabited buildings in the municipality, in 2000, about 34.8% were single family homes and 36.0% were multiple family buildings. Additionally, about 32.0% of the buildings were built before 1919, while 7.5% were built between 1991 and 2000. In 2013 the rate of construction of new housing units per 1000 residents was 26.46. The vacancy rate for the municipality, , was 1.2%.