An extensive refurbishment of the pitches was completed in 2009.
No extensive refurbishment has taken place in the original part of the school.
A further extensive refurbishment was carried out between 1979 and 1981.
In 1995, for reasons of space, the school moved to its present site following extensive refurbishment.
Then, starting in 1999, the building underwent an extensive internal refurbishment which cost $2.5 million.
New owners have since carried out extensive refurbishment to the House.
During 2011 and early 2012, the entire Museum site underwent extensive refurbishment.
Between 1983 and 1986, several 4 Big units required extensive refurbishment.
The latest extensive refurbishments were made between 2008 and 2012.
In 2005, 34 465/2 units (465201-465234) were given an extensive refurbishment.