Short answer: yes, using equity to renovate works for most homeowners who've built up some equity. Most lenders will let you borrow up to 80% of what your home is worth, minus what you still owe, as long as you can afford the higher repayments. You can access it by topping up your loan, adding a split or line of credit, or, for bigger jobs, a construction loan that pays your builder in stages. Which one suits depends on the size of the job and how it's being paid for.
Plenty of people in the Blue Mountains and Penrith are sitting on more equity than they realise. Even with Sydney values easing through 2026, many owners who bought five or more years ago have built up a solid buffer, and the loan has been coming down the whole time. That gap is equity, and using it to renovate can be much cheaper than a personal loan or a credit card.
It can also go wrong if the loan is set up the wrong way for the job. Here's how it works, and what we look at before we recommend one option over another.
Equity is the part of your home you own outright. It's the difference between what your home is worth today and what you still owe on it.
If your home is worth $900,000 and you owe $400,000, you have $500,000 in equity. You can't borrow all of it, though. What you can borrow against is your usable equity.
Most lenders cap total lending at 80% of your home's value without lenders mortgage insurance (LMI). So the quick sum is:
Home value × 80% − what you owe = usable equity
Using the same example:
Two things change that number in real life:
Borrowing above 80% is sometimes possible with LMI, but for a renovation it's rarely the best move. We'll show you the numbers both ways if it comes up.
You ask your current lender to increase the loan, and the extra lands in your account or offset. Simple, often quick, and fine for a kitchen, a bathroom or a deck with a fixed quote.
Watch for: your existing lender may not have the sharpest rate for the bigger loan. A top-up is a good moment to check that. If it's been a few years since you looked, see our 5 signs it's time to refinance.
The new money goes into its own split, separate from the main loan. It makes the reno spending easy to track, and you can set it up differently (for example, variable on the reno split so you can pay it down faster with no break costs).
You get a limit and draw on it as bills come in, paying interest only on what you've used. It suits renos where the costs come in dribs and drabs over months.
Watch for: it's easy to let a line of credit drift into everyday spending. It only works if you treat it as the reno budget and nothing else.
For structural work, extensions, knockdown-rebuilds or anything that needs council approval and a builder's contract, a construction loan is often the right tool. The lender pays your builder in stages as the work is done, and you only pay interest on what's been drawn.
The useful part for big renos: some lenders will lend against the "as if complete" value, what your home will be worth once the work is finished. That can mean more borrowing power than your home's value today supports.
If your current lender won't do what you need, or the rate isn't competitive, refinancing to a new lender and taking the equity out at the same time can be cleaner. That's what our cash-out refinance page is about.
For a renovation, expect to provide:
For a construction loan, the lender will also want the progress payment schedule so each stage can be released on time.
This is where a local broker earns their keep.
Most of the Blue Mountains is mapped as bushfire-prone land. If your reno needs approval, the work generally has to meet the building standard for bushfire areas (AS 3959) at your property's bushfire attack level (BAL), under the NSW Rural Fire Service's Planning for Bush Fire Protection rules. There are six levels, from BAL-LOW up to BAL-FZ (flame zone). The higher the level, the more the ember screens, glazing, cladding and decking cost, and at the top levels a full development application is needed rather than a faster approval. All of that has to be in the budget before the loan is sized. The RFS guide to building in a bush fire area is a good starting point.
A lot of Mountains homes are older weatherboard and fibro cottages. Two things to know:
It can be. The interest rate on home loan money is usually far lower than a personal loan or credit card, and a well-chosen reno can add value to the home. But you're turning part of your home into debt, often over 25 or 30 years, so it pays to be clear-eyed:
Usually, yes. Most lenders will let you top up your existing loan or add a split. Refinancing only makes sense if your lender won't approve the increase or a better deal is available elsewhere.
Up to 80% of the lender's valuation, minus what you owe, is the usual limit without LMI, as long as you can afford the repayments. The lender may ask what the money is for.
Yes. The way the loan is structured can affect your tax deductions, so talk to your accountant before you draw the money.
We're based on Park Street in Glenbrook and work with renovators across the Blue Mountains, Penrith and the Hawkesbury. We compare 70+ lenders, check what your home will value at before you commit to a builder, and set the loan up to match how the work will actually be paid for. The lender pays us when the loan settles, so there's no broker fee.
Call (02) 4744 2054, visit our Blue Mountains office, or book a free chat.
This article is general information only and doesn't take into account your objectives, financial situation or needs. Consider whether it's appropriate for you and speak to a broker before acting. Lending criteria, fees and charges apply. Four Red Hats Pty Ltd (t/a Lend Local Co) ACN 666 330 972 is authorised under LMG Broker Services Pty Ltd, Australian Credit Licence 517192.
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