Fredericton, NB (I have not been able to find the location of this long-gone building.)

Rose Hall burned to the ground in 1886. It is said the coach hose survived and became a residence. York Sunbury Museum's website gives the following newspaper article:

Volume 58 Number 1759
Date May 4 1882
County York
Place Fredericton
Newspaper The Fredericton Evening Capital
"Rose Hall Devoured By Flames – The burnt place was one of the oldest buildings in Fredericton. The upper part of the building was built in 1785 by Benedict ARNOLD. In 1791 he sold the place to Jacob ELLEGOOD for 325 and returned to England where he died in 1801. In 1818 the property was transferrred to the late Col. George SHORE who occupied it until his death in 1851. In 1835, Col. Shore built the new part of Rose Hall and had the ARNOLD House removed from the rear of the lot and placed on a wing."

Also read this account:
Old Landmarks of Fredericton - Rose Hall, situated about a mile below the City limits, now occupied by Jas. RUEL, Esq. was originally the property of the renowned Benedict ARNOLD. On April 6th, 1786 he purchased from Peter CLEMENTS and Abigail CLEMENTS his wife, lot 35, situate on the western bank of the River St. John, one half mile from the town plot of Fredericton, bounded on the north by an unoccupied spot and improvements of Edward EARLE, on the west by the Commons of Fredericton, on the south by improvements of Chas. MATHESON, on the east by the St. John River, the said lot containing one half acre for the sum of 110. Gen. Arnold erected that portion of Rose Hall now known as the old part, and during his brief stay in Fredericton with his family occupied it. On March 15th, 1786, General Arnold purchased from Edward Earle lot 41 for 150. (see original for history of Gen. ARNOLD) (see original for other owners of Rose Hall, namely Jacob ELLIGOOD, John Saunders ELLIGOOD, H.M. 55th Regt. of Foot; Col. George SHORE). Date - September 23 1880 County - York Place - Fredericton Newspaper - The Fredericton Evening Capital Source - Daniel F Johnson's New Brunswick Newspaper Vital Statistics. New Brunswick Archives. Volume 53 Number 2303.