The calculator has an option called 'Quality of finish' which allows you to select 'basic', 'standard' or 'luxury'. The best you can do before detailed house plans are drawn up is increase the per-square-metre rates How will my non-standard features such as high ceilings affect the cost?Ī. Use 20% - 25% if you want your house to feel spacious. Circulation refers to hallways, entrances and stairways. In addition thereĬan be site-access issues, especially if the owners are still livingĪ. plumbing & electrical problems, termite damage, etc. House and the per-square-metre cost of a renovation, extension or additionīecause there are usually unforeseen structural issues e.g.
There is a large difference between the per-square-metre cost of a new Per-square-metre why do renovations, extensions & additions cost more?Ī.
Or contact a few local builders or residential architects. For reasonable per-square-metre costs for your local area refer to BMT's If you have not already done so read our article about Building Cost Estimatesįor more information. For reasonable per-square-metre costs in Australia use BMT's Us they can get to within 10% of the final cost - so the better your research for reasonable per-square-metre costs, the more accurate ourĬalculator will be. before there are detailed plans.Įxperienced builders who use our calculator have told Our calculator gives reasonable initial estimates, ie.
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