Coordinates: 51°30′27″N 0°7′36″W / 51.50750°N 0.12667°W
Northumberland House (also known as Suffolk House when owned by the Earls of Suffolk) was a large Jacobean townhouse in London, which was so called because for most of its history it was the London residence of the Percy family, who were the Earls and later Dukes of Northumberland, and one of England's richest and most prominent aristocratic dynasties for many centuries. It stood at the far western end of the Strand from around 1605 until demolished in 1874. In its later years it overlooked Trafalgar Square.
In the 16th century the Strand, which connects the City of London with the royal centre of Westminster, was lined with the mansions of some of England's richest prelates and noblemen. Most of the grandest houses were on the southern side of the road and had gardens stretching down to the River Thames.
In around 1605 Henry Howard, 1st Earl of Northampton cleared a site at Charing Cross on the site of a convent and built himself a mansion, which was at first known as Northampton House. The Strand facade was 162 feet (49 m) wide and the depth of the house was marginally greater. It had a single central courtyard and turrets in each corner.