How much it costs to renovate historic building in Australia is 20% to 50% more than modern building, with average $2,000 to $4,000 per sqm for heritage renovation versus $1,500 to $2,500 for modern, total $100K to $500K for house, due to heritage materials and specialist trades. Renovating historic building, defined as heritage listed building on State or local register, costs $2,000 to $4,000 per sqm for full renovation including kitchen $20K to $40K, bathroom $15K to $30K, roof $20K to $50K, timber windows $1K each versus uPVC $300, lime plaster $100 per sqm versus gypsum $30, and heritage consultant $1K to $3K for DA and heritage impact statement $500 DA fee. For example, heritage terrace 150 sqm full renovation $300K to $500K, with kitchen $30K, two bathrooms $40K, roof $40K, windows $20K, electrical and plumbing $30K, plus heritage approval $2K. Partial renovation like kitchen and bathroom $50K to $100K. Factors include heritage listing requiring timber windows not uPVC, lime mortar, heritage colours, and specialist heritage builder $80 to $120 per hour versus general builder $60 to $80. So renovating historic building costs $2,000 to $4,000 per sqm, total $100K to $500K for house, 20% to 50% more than modern $1,500 to $2,500 per sqm, due to heritage materials, specialist trades and approval costs $500 DA plus $1K to $3K heritage statement.
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