In 1872, he had fellow veteran Frank Furness design a house on the river, still known as "Grubb Cottage". In 1874, he built a  estate at Edgewater Park Township, New Jersey, called "Grassmere", where he annually entertained the survivors of the 23rd regiment.
In 1872, a fellow veteran named Frank Furness designed a house for him on the river, which is still known as "Grubb Cottage". In 1874, he built an estate at Edgewater Park Township, New Jersey called "Grassmere", where he annually hosted survivors of the 23rd regiment.