This Old House - 1979 Arlington Italianate Project 2014 Italianate Inspiration was released on: USA: 22 February 2014
The answer will depend on where in the world the houses were.
Inigo Jones.
According to the French national statistical agencyINSEE in its 2002 survey of housing, the houses built from 1997 to 2001 had an average area of 114.4 square metres (for both town and countryside houses) 114.4 square metres = 1231 square foot
This Old House - 1979 Arlington Italianate Project 2014 House vs- Nature was released on: USA: 15 March 2014
This Old House - 1979 Arlington Italianate Project 2014 Deadliest Old House was released on: USA: 1 March 2014
like a square
The average square footage of a colonial house was much smaller than modern day houses. Many of these colonial houses were less than 300 square feet.
This Old House - 1979 Arlington Italianate Project 2014 Additional Details 33-14 was released on: USA: 8 February 2014
This Old House - 1979 Arlington Italianate Project 2014 Concrete Jungle 33-11 was released on: USA: 18 January 2014
This Old House - 1979 Arlington Italianate Project 2014 Arlington Heights 33-15 was released on: USA: 15 February 2014
800-1000 square feet for appartments and houses.