 He went to offer a draft plan for the municipal administration, but because the answer was negative, relentless Engvist went on to present a draft to the Uusimaa Provincial Government.The province architect was fascinated by the draft and, while hoping that Engvist would refine the draft a little, he also asked him to develop names for the area and the streets to come.The place was named Mäntysalo, despite the fact that the forest consisted of spruce trees () rather than pine trees, but Engvist's wife Lempi considered the name "Kuusisalo" less beautiful.