He renamed it Warwick Farm to correspond with his own initials, and built a family homestead along with racing stables and a thoroughbred stud.
At one time, he allegedly wagered the deeds of his Warwick Farm house on a card game; he won.
After his death, Sydney Tattersalls Club opened a subscription to assist his widow, Emily, their 3 daughters and their son.
The Australian Jockey Club bought the Warwick Farm course in 1922, with the first meeting held in the refurbished surrounds in 1925.
Many years after Forrester and his wife's death, and with the redevelopment of Liverpool cemetery, one of their daughters, Ellie May, had her parents remains exhumed and cremated at Northern Suburbs.