Costs can include a valuation, loan or application fees, government registration fees, and a discharge fee if you leave your current lender. A top up usually costs less than a full refinance.
Written by Ross McFarlane, Licensed Mortgage Broker (Credit Representative 526725). About the authorThe costs are generally modest next to the renovation budget, but worth knowing. A valuation confirms your equity, and a construction style loan may involve extra inspection costs at each stage. If you refinance away from your current lender, factor in a discharge fee. A broker can total the likely costs so they do not surprise you mid project.
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Last reviewed: June 2026
General information only. This page provides general information about home loans and is not financial or credit advice, a quote, or a guarantee, and your personal circumstances have not been considered. Lending policies, interest rates, fees and eligibility vary by lender and change over time. Always confirm your own situation with a licensed mortgage broker or lender before acting. Ross McFarlane (Credit Representative 526725) is an authorised Credit Representative of Australian Associated Advisers Pty Ltd t/a Keylend, Australian Credit Licence 392169.