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.
  According to the National Association of Home Builders, the average home size in the United States was 2,330 square feet in 2004, up from 1,400 square feet in 1970. 11 people found this useful.,521 square feet.   Source: 2006 Census study on housing.   http://www.census.gov/const/www/highanncharac2007.html   Clarification: this is only the average square f â¦ ootage for new homes completed in 2007. It doesn't take into account the average square footage of all the existing homes built prior to 2007.