Upon its move to London in 1877 the Institution rented premises at No. 10 Victoria Chambers, where it remained for 20 years. In 1895 the Institution bought a plot of land at Storey's Gate, on the eastern end of Birdcage Walk, for £9,500. Architect Basil Slade looked to the newly-completed Admiralty buildings facing the site for inspiration. The building was designed in the Queen Anne, 'streaky bacon', style in red brick and Portland stone. Inside, there were several features that were state of the art for the time, including a telephone, a 54-inch fan in the lecture theatre for driving air into the building, an electric lift from the Otis Elevator Company, and a Synchronome master-clock, which controlled all house timepieces. In 1933 architect James Miller, who also designed the neighbouring Institution of Civil Engineers, remodelled the building, expanding the library and introducing electric lighting.