Somerset House is a large building situated on the south side of the Strand in central London, England, overlooking the River Thames, just east of Waterloo Bridge. The central block of the Neoclassical building, the outstanding project of the architect Sir William Chambers, dates from 1776–96. It was extended by classical Victorian wings to north and south. A building of the same name was first built on the site more than two centuries earlier.
Sir William Chambers, Surveyor-General of Works and appointed to design and build the new Somerset House, spent the last two decades of his life, beginning in 1775, in several phases of building at the present Somerset House. Thomas Telford, then a stone mason, but later an eminent civil engineer, was among those who worked on its construction. One of Chambers's most famous pupils, Thomas Hardwick Jr, helped build parts of the building during his period of training and later wrote a short biography about Chambers.
By 1780 the North Wing, fronting the Strand, was complete. Its design was based on Inigo Jones's drawings for the riverfront of the former building. We do not know for certain at what pace the rest of the construction progressed, but it is clear that the outbreak of war with France caused delays through lack of money. Chambers died in 1796; most of the building was completed after Chambers' death by James Wyatt. However we know that building work was still going on in 1801; and there are indications that as late as 1819 some decorative work still needed to be completed. This original building (which did not yet include the "New Wing" and King's College London, situated behind the West and East Wings of the quadrangle respectively) probably cost about £500,000.