​Originally designed by Greg Dickson in 2003 while at FMSA, the owners commissioned Dickson Architecture in 2012 to design a new bedroom wing extension. 
Being in a rural setting and assessed as a BAL29 bushfire category, the Mount Macedon House addition needed to comply with modern bushfire construction rules. Fortuitously, the original brief for the house led to a structural design that featured a suspended concrete slab supported by concrete block walls, and a cladding system of steel and compressed fibre cement sheet over a highly insulated timber frame.  These original decisions allowed the same construction method and detailing to be used without modification while meeting the current rules.
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The new wing uses the same architectural language as the original design externally, while including a few "twists" to update the internal spaces.  A new internal stair leading down to a basement features the high level of design rigour, playfully utilising materials more at home in a workshop setting.  The basement level gives additional garden tools space for the owners, in addition to an integral bushfire bunker should the property be threatened by bushfire in future.