by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
Five to Six Star : Five to Six Star
28 MOVING FROM 5 TO 6 STAR Discussion Table One – Summary of Costs Case Study Description Size m2 Cost m2 Total cost 1 House - 1 storey 216 $4 $865 2 House - 1 storey 137 $9 $1265 3 House - 1 storey 300 $14 $4115 4 House - 1 storey 327 $15 $4872 5 House - 1 storey 101 $17 $1730 6 House - 1 storey 270 $18 $4860 7 House - 1 storey 262 $20 $5112 8 House - 1 storey 145 $21 $3048 9 Unit - 1 storey 86 $26 $2232 10 Unit - 2 storey 260 $42 $10,856 Typical costs for the case studies examined in this project ranged from $4 m2 for a small, extremely well designed house (Case Study 1) to $42 m2 for a poorly designed two storey unit with a large amount of glazing (Case Study 10). Exclusion of Case Study 10 puts the next most expensive upgrade from 5 to 6 Star at $26 m2 for a single- storey unit with large glazed areas to the west (Case Study 9). For the majority of the case studies (9 of the 10), build costs were in the range of $4 to $26 m2, with total costs ranging from $865 to $10,856 for a poorly designed two storey unit. The total cost per dwelling was closely related to the design of the house. Houses which were oriented to the north (allowing for winter heat gain from the sun), with moderate glazing (reducing heat loss) and appropriate shading (reduced heat gain in summer) were less costly to improve. The size of the house also had a large effect on the total cost of improvement with large houses with poor passive solar design being the most costly to bring up to the 6 Star standard. Applying passive solar design principles early in the design process is likely to lead to significantly lower costs than were found in upgrading poorly designed houses.