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A Nat HERS rating may not be required but provides valuable input to your design development process.
Your designer should have a good working relationship with a building sustainability assessor.
Most local governments have planning policies that allow minor internal and external changes that don’t alter structure or services to be made without council approval, but it is always best to check first.
Alterations to services (plumbing, drainage, gas and electrical) do require approval and inspection by the relevant authority but may not require planning or building approval.
Start by revisiting the environmental goals specified at concept stage to ensure they are carried through to the detailed plans and specifications, which are submitted to council, tendered by builders and annexed to your building contract.
During detailed design complete: Before choosing your builder/s, see the detailed information in The construction process.
If your design includes additions or extensions (significant ‘new build’ areas that connect to the existing home), read this section in conjunction with the previous section on renovations.The summary software outputs show ‘degree hours’ outside an acceptable range of thermal comfort temperatures for each room and identifies the need for addition or reduction of thermal mass and glazing, and appropriate shading and insulation levels for your climate.Make sure your building sustainability assessor can provide this level of service. With the initial analysis in hand, you and your designer can detail the incorporation of its recommendations.You'll find complete galleries of all the samples above in our members section, together with much much more.Renovations and additions can improve the livability and sustainability of your home with careful planning, thoughtful design and a considered choice of builder.
Even for minor renovations, some work is likely to require tradespeople.