The Boundary Estate is a housing development in Shoreditch, formally opened in 1900, in the far west of the East End so in East London, England. It is in the London Borough of Tower Hamlets and its western limit, Boundary Street, is with the London Borough of Hackney. The estate, constructed from 1890, was one of the earliest social housing schemes built by a local government authority. It was built on the site of the demolished Friars Mount rookery in the Old Nichol, with works begun by the Metropolitan Board of Works in 1893 and completed by the recently formed London County Council.