As per the provisions of the Maharashtra Act, No. XLIV of 1975, the Tree Authority was constituted in the year 1976, by the Corporation. The amendment enacted to the Tree Authority Act, vide Maharashtra Act, No.VII of 1996 brought changes in Chairing the Meetings of the Tree Authority. By virtue of this amendment, the Municipal Commissioner of Brihanmumbai Mahanagarpalika has to Chair the Meetings of the Tree Authority instead of the Mayor. After the General Elections, the Corporation had reconstituted the Tree Authority as per the aforesaid amendment by appointing 13 Councillor Members and 10 Nominated Members.

The Chairman, Markets and Gardens Committee is an ex-Officio Member on the Tree Authority as per the convention established under Corporation Resolution No.1047, dated the 27th November 1975.

The Tree Authority helps in regulating the felling of trees and providing for planting of adequate number of new trees through Garden Department. On or before the 31st day of October every year Tree Authority prepares budget estimate and forwarded the same to the Corporation for their final approval.