Tianderah is a historic home located at Gilbertsville in Otsego County, New York.

It was built in 1887 by Boston-based architect William Ralph Emerson.

It is an L-shaped, stone Romanesque Revival and Shingle style residence dramatically overlooking the village and complemented by a stone and shingle style stable.

It is built of rock-faced bluestone and features a 15-foot-deep (4.6 m) verandah that runs across the front of the main facade.

[2] The estate was placed on the market in July 2007 for $3 million, the highest price ever asked for a private residence in Otsego County.