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.
The NAHB average is created by first assuming that the size of the project is 2,311 square feet--the average size of new homes constructed throughout the nation in 2011. This, of course, means that projects of smaller scope would carry a lower cost for framing while the frames of larger houses would cost more.