 The final part of the Skøyen Line, from Skøyen to Lillaker was a suburban tramway located in the neighboring municipality of Aker, and the Municipality of Oslo was not interested in taking over it.Therefore the owner reorganized itself to A/S Kristiania Elektriske Sporvei Bærumsbanen (KES-BB), though changing their name to just A/S Bærumsbanen in 1935 after Oslo Sporveier bought 25% of the company on 1 October 1934.The new company immediately started expanding the Lilleaker Line, first to Bekkestua and then to Haslum—establishing a depot at Avløs at the same time.