Although Amos worked and made his name mainly in Helsinki, he did not feel at home in the capital. In 1927, he purchased Söderlångvik estate on Kimitoön in the Archipelago Sea in Western Finland. The main building dates to the turn of the 18th and 19th centuries. With the ambition of creating a summer residence in the style of Roman villas, he soon began comprehensive extensions. Between 1934 and 1935, an upper floor was added, and the house was given a white-plastered façade. During the subsequent renovation in 1937–38, the building took on its current form with two wings and a balustrade-clad roof terrace. W. G. Palmqvist, Amos’ close friend and the architect behind several of his buildings in both the Turku region and Helsinki, was responsible for the neoclassical transformation.