HMS President (1918) , formerly HMS Saxifrage, is a Flower-class anti-submarine Q-Ship completed in 1918, and is one of the last three surviving warships of the Royal Navy built during the First World War, (along with the 1914 Light cruiserHMS Caroline in Belfast, and the 1915 Monitor HMS M33 in Portsmouth dockyard).
The average single-family home built today is 2,657 square feet, more than twice the average single-family home built in 1920. To determine how homes have changed over the past century, 24/7 Wall St. estimated the size of a newly constructed single-family house between 1920 and 2014.
One of the most surprising things is that the size of the home is not stopping; it is still increasing, said Gopal Ahluwalia, director of research for NAHB. He said that in the last 30 years the average household size has declined by about 30 percent from 3.1 persons in 1970 to 2.1.