According to Official Guinness Records,
Constructed in 1860, Overstone Hall in Northampton, UK, is the world’s earliest building to boast double walls (two skins of masonry, separated by an air gap), thus endowing it with cavity wall insulation. It was designed by architect William Milford Teulon for Lord and Lady Overstone as a highly “modern" residence, and behind the Grade-II-listed historical façade lie a central heating system (called Mr Price’s Apparatus), gas lighting and a butler’s lift. Overstone Hall took so long to build that Lady Overstone died before it was completed, and Lord Overstone reputedly disliked the house so much that he never moved in.In the twentieth century, Overstone Hall has been the home of a wealthy shipping magnate, a college, and a girls’ public school, before being acquired by New Testament Church of God for £100,000 in 1980. On 16 April 2001 a fire left the estate in semi-ruined state.
For a complete list of 1860 records, please visit 1860 Guinness Records in United Kingdom.