Extensions ought to give you your dream space, however when you don’t know the place to start they will seem like a nightmare waiting to occur. This calculator could provide perception into the price of house extensions in Melbourne Sydney and Brisbane and is simply supposed as a guide; it is not a quote. Many such extensions projecting no more than 4m from the rear of the original home are covered by permitted development rights, however a two-storey side extension would require planning consent – and remember Building Regs. However, we would hope that the contractor chosen wouldn’t want any assistance during the house extension development – as a result of quality of the knowledge supplied and the suitability of the contractor. If some homeowners or occupiers of adjoining properties do object, then the council should assess the impact of the proposed house extension on all adjoining premises.