The concept for a new garden city, to be called Tel Aviv, was developed on the sand dunes outside Jaffa in 1909. Scottish urban planner Patrick Geddes, who had previously worked on town-planning in New Delhi, was commissioned by Tel Aviv's first mayor, Meir Dizengoff, to draw up a master plan for the new city. Geddes began work in 1925 on the plan, which was accepted in 1929. The view of the British Mandatory authorities seemed to have been supportive. In addition to Geddes, and Dizengoff, the city engineer Ya'acov Ben-Sira contributed significantly to the development and planning during his 1929 to 1951 tenure.