Is it smart to use equity to renovate? The answer depends on your property’s value, renovation costs, borrowing capacity and plans. Using your equity can help you improve your home without spending years saving the full amount.
However, borrowing against your property increases your debt and could affect your financial security. This guide explains how usable equity works, why the 80% loan-to-value ratio matters, and how redraws compare with home loan top-ups. You’ll also learn how to assess renovation returns, avoid unnecessary fees and decide whether borrowing makes financial sense.
Key Takeaways
| Consideration | What You Need to Know |
| Usable equity | Lenders commonly calculate accessible equity using 80% of your property’s accepted value, less your existing loan balance. |
| The 80% LVR threshold | Staying at or below 80% LVR may help you avoid new Lenders Mortgage Insurance (LMI), subject to your lender’s requirements. |
| Renovation returns | Improvements may increase property value, but the added value might not cover your renovation costs. |
| Accessing funds | A redraw, home loan top-up or refinance may provide funding, depending on your loan terms and financial position. |
| Repayment costs | Borrowing more increases your debt and may increase repayments or extend your repayment period. |
| Approval requirements | Your lender assesses your income, expenses, debts, credit history and ability to repay the increased loan. |
| Main risk | You could owe more money without achieving the expected increase in property value. |
What Is Home Equity, and How Does It Work?
Home equity is the difference between your property’s current market value and the outstanding balance on your mortgage. It represents the portion of your property’s value that you own financially.
For example, suppose your home is worth $900,000 and you owe $500,000. Your total equity is $400,000.
However, you generally cannot borrow against all that equity. Lenders consider their lending policies, your repayment capacity and the amount of equity you can safely access.
Total Equity Versus Usable Equity
Understanding this distinction helps you estimate how much funding might be available for renovations.
- Total equity: This is your property’s estimated value minus your outstanding mortgage, regardless of how much a lender might let you borrow.
- Usable equity: This is the portion you may be able to access after applying the lender’s acceptable LVR and other lending requirements.
Most lenders use 80% LVR as an important benchmark when calculating accessible equity. However, some lenders may permit higher borrowing, subject to additional conditions and costs.
How to Calculate Your Usable Equity
A common estimate uses this formula:
Usable equity = (Property value × 80%) − Existing home loan balance
Consider a property valued at $900,000 with an outstanding mortgage of $500,000.
| Calculation | Amount |
| Current property value | $900,000 |
| 80% of property value | $720,000 |
| Existing mortgage | $500,000 |
| Estimated usable equity | $220,000 |
Although the homeowner has $400,000 in total equity, the estimated usable equity is $220,000.
This figure is an estimate, not a borrowing approval. Your lender must assess your application and confirm its valuation.
Read more: Home equity calculator
Why the 80% LVR Threshold Matters
Your loan-to-value ratio (LVR) compares your mortgage balance with your property’s accepted value. Lenders use this ratio when assessing lending risk.
For example, a $720,000 mortgage secured against a $900,000 property produces an 80% LVR.
The 80% threshold matters because borrowing above it may trigger LMI. This insurance protects the lender if you default, rather than protecting you as the borrower.
However, LMI rules depend on your circumstances, loan structure and lender. Some borrowers may qualify for exemptions or other arrangements.
How a Renovation Loan Can Affect Your LVR
Suppose your property is worth $900,000, and your current mortgage is $680,000.
Your existing LVR is approximately 75.6%. You then request an additional $50,000 for renovations.
Your new mortgage would total $730,000, producing an LVR of approximately 81.1%.
That increase takes you above the commonly used 80% benchmark. Depending on your lender and existing loan arrangements, additional LMI or other conditions could apply.
Consequently, you should calculate your projected LVR before committing to a renovation budget.
What Happens If Your Property Value Falls?
Your usable equity can shrink if property values decline, even when you continue making repayments.
For example, a property valued at $900,000 might fall to $850,000. The lender’s assessment could then produce a lower borrowing limit.
This is why relying on an optimistic valuation can create problems. Allow room for valuation uncertainty and avoid borrowing to your maximum limit without considering your wider finances.
Is It Smart to Use Equity to Renovate?
Using equity can make financial sense when the renovation improves your home, fits your budget and supports your long-term plans.
However, it is not automatically a good decision simply because your property has increased in value.
Consider these advantages and disadvantages before borrowing.
Benefits of Using Equity for Renovations
- Improve your living conditions: A better kitchen, additional bedroom or improved layout can make your home more suitable for your family’s needs.
- Potentially increase property value: Well-planned improvements may appeal to future buyers and support a stronger resale price.
- Avoid selling your property: Renovating may let you remain in your preferred location rather than purchasing another home.
- Access potentially competitive finance: Mortgage borrowing may cost less than some unsecured personal loans, although the actual rates and fees vary.
- Spread the cost over time: A suitable loan structure can help you fund a major project without paying the entire amount upfront.
These benefits depend on the project, financing costs and your ability to repay the additional debt.
Risks of Using Equity for Renovations
- Higher mortgage repayments: Borrowing more increases your outstanding balance and can raise your regular repayments.
- Overcapitalisation: You might spend more on improvements than the property gains in market value.
- Longer repayment periods: Adding renovation costs to a long mortgage term could mean paying interest for many years.
- Unexpected construction costs: Structural problems, material price changes and project delays can push your spending beyond the original budget.
- Reduced financial flexibility: Higher debt may leave less room for emergencies, family expenses or changes in income.
Therefore, compare the expected benefits with the full cost of borrowing. A renovation can improve your lifestyle without necessarily producing a financial profit.
Which Renovations Offer the Best Financial Value?
Not every improvement delivers the same result. Some projects solve practical problems, while others mainly reflect personal taste.
The most suitable renovation usually addresses a genuine need without exceeding what buyers in your local market are likely to pay.
Renovations Worth Considering
- Kitchen improvements: Updating worn cabinetry, lighting and benchtops can improve functionality without requiring a complete redesign.
- Bathroom upgrades: Repairing damaged fixtures, improving ventilation and modernising tired finishes may improve buyer appeal.
- Additional living space: A carefully planned extension may suit growing families, provided construction costs align with local property values.
- Energy efficiency: Better insulation, shading and suitable energy-efficient equipment may improve comfort and reduce some household running costs.
- Essential repairs: Fixing leaks, structural defects or damaged roofing protects your property and may prevent more expensive problems later.
Nevertheless, no renovation guarantees a particular return. Location, workmanship, buyer preferences and market conditions all influence the outcome.
Understand the Risk of Overcapitalisation
Overcapitalisation occurs when renovation costs exceed the value added to your property.
For example, you might spend $100,000 on an elaborate kitchen and premium finishes. If a later valuation attributes only $60,000 of additional value to those improvements, the difference is $40,000.
That does not automatically mean the renovation was a mistake. You may still enjoy the improved kitchen for many years.
However, it highlights why you should separate lifestyle benefits from expected financial returns. Obtain realistic project quotes and consider comparable properties before making major commitments.
How to Access Equity for Renovations
You generally need your lender’s approval before accessing additional funds secured against your property. The most suitable method depends on your current mortgage, available funds and financial circumstances.
1. Home Loan Top-Up
A home loan top-up increases your existing mortgage to release additional funds.
For example, if you owe $500,000 and your lender approves another $60,000, your mortgage balance could rise to $560,000.
This option may suit borrowers whose current loan remains competitive and whose lender offers suitable top-up arrangements.
However, the lender will usually reassess your financial position and may require a property valuation. Fees and interest rates depend on the lender and loan product.
2. Redraw Facility
A redraw facility lets you access eligible extra repayments you’ve already made on your mortgage.
Suppose you have paid an additional $25,000 into your loan and your lender allows you to redraw that amount. You might use those funds towards renovation costs.
Redraw can be useful because you’re accessing money already paid into your loan rather than necessarily increasing the original approved limit.
However, redraw availability depends on your loan terms. Your lender may impose access restrictions, fees or processing delays.
3. Refinancing for Renovations
Refinancing for renovations involves replacing your existing mortgage with a new loan that may include additional borrowing.
For instance, you might refinance a $500,000 mortgage into a $570,000 loan, provided the lender approves the additional $70,000.
Refinancing may suit borrowers who want to compare interest rates, adjust loan features or access equity through another lender.
However, calculate establishment fees, discharge costs, valuation expenses and any applicable break costs. A lower advertised rate does not automatically mean refinancing will save you money.
Read more: 9 reasons to refinance your home loan and save more
4. Construction or Renovation Finance
Larger projects may require a loan structured around construction stages rather than a single upfront payment.
Depending on the lender, funds might be released progressively after inspections or evidence of completed work.
This arrangement can help align borrowing with the project’s progress. However, you may need detailed building plans, fixed-price contracts, council approvals or other documents.
Ask the lender how it handles cost overruns, builder changes and delays before selecting this option.
Redraw Versus a Home Loan Top-Up: Which Is Better?
A redraw and a top-up can both help fund renovations, but they work differently. The right choice depends on how much money you need and the features of your existing loan.
| Feature | Redraw Facility | Home Loan Top-Up |
| Source of funds | Eligible extra repayments already made into your loan. | Additional borrowing approved by your lender. |
| New borrowing | Usually accesses repayments already made, subject to the loan terms. | Increases the approved loan amount and your debt. |
| Approval | Access depends on your facility’s rules and available redraw balance. | Usually requires a lending assessment and may require a valuation. |
| Fees | Some lenders charge redraw fees or impose access limits. | Fees and conditions vary by lender and loan product. |
| Best suited to | Borrowers with sufficient available redraw funds. | Borrowers who need more funds than their available redraw balance. |
Compare the Total Cost, Not Just the Interest Rate
Redraw may be the simpler option if you already have enough eligible funds available. Nevertheless, you should consider how withdrawing those funds affects your repayment strategy.
A top-up may provide greater flexibility for a larger project. However, it adds to your debt and could change your repayments or loan conditions.
Before deciding, compare the interest rate, fees, repayment term and access conditions for each option. Also check whether your existing loan has restrictions on extra repayments or redraw access.
Importantly, redraw is not the same as an offset account. An offset account holds separate savings that reduce the balance used to calculate interest, while redraw involves accessing eligible extra repayments made into your loan.
How Much Will Renovation Borrowing Cost?
The cost of borrowing depends on your additional loan amount, interest rate, repayment term and repayment structure.
Even a manageable-looking monthly repayment can become expensive over a long mortgage term.
Consider borrowing $60,000 for renovations at a hypothetical interest rate of 6.5% per year. Assume principal-and-interest repayments, a constant rate and a fully amortising loan.
| Loan Term | Approximate Monthly Repayment | Approximate Total Interest |
| 10 years | $681 | $21,700 |
| 20 years | $447 | $47,300 |
| 30 years | $379 | $76,400 |
These figures are illustrative estimates, not current market quotes. Actual repayments will depend on your lender’s rate, fees and loan conditions.
The longer term reduces the monthly repayment but substantially increases total interest.
Why Your Existing Mortgage Term Matters
Suppose you add renovation borrowing to a mortgage with 25 years remaining. You might repay the additional amount over the remaining term or under a separate loan split.
If you instead refinance into a new 30-year loan, you could extend the repayment period for your existing debt.
Consequently, a lower monthly repayment may hide a higher lifetime borrowing cost. Compare the total interest across realistic alternatives before choosing a longer term.
How To Prepare A Realistic Renovation Budget
A detailed budget reduces the risk of running out of money halfway through construction.
Before borrowing, identify the full cost of the work rather than relying on the builder’s headline quote alone.
Include these expenses in your calculations:
- Design and planning: Architects, engineers and drafting services may charge fees before construction begins.
- Permits and approvals: Some projects require council approvals, building permits or other professional assessments.
- Materials and labour: Quotes should explain the work included, materials supplied and any exclusions.
- Temporary accommodation: Major renovations may require you to live elsewhere while essential rooms remain unusable.
- Contingency funds: Set aside a reasonable reserve for unexpected repairs, price changes or delays.
The appropriate contingency depends on the project’s age, complexity and condition. Older homes and structural alterations may involve greater uncertainty than cosmetic improvements.
Where possible, obtain multiple comparable quotes. Confirm the builder’s licensing and insurance requirements for your state or territory, and review the contract before signing.
Check Whether You Can Afford the Repayments
Your budget should account for the additional mortgage repayments and your normal household expenses.
Lenders also assess whether you can afford the proposed debt under their serviceability rules. APRA confirmed in May 2026 that the mortgage serviceability buffer remained at three percentage points above the loan product rate. This means lenders generally test repayment capacity using a higher assessment rate, subject to applicable requirements.
Your lender’s approval does not replace your own affordability assessment. You should still consider changes to income, childcare costs, emergency savings and other financial commitments.
What Lenders Assess Before Approving Equity Access
Having substantial equity does not guarantee approval. Your lender must assess both the security provided by your property and your ability to repay the proposed borrowing.
The assessment commonly considers:
- Property valuation: The lender determines an acceptable value for calculating your LVR and potential borrowing limit.
- Income and employment: Your income, employment stability and other earnings help establish your repayment capacity.
- Living expenses: Your regular household spending affects how much money remains available for repayments.
- Existing debts: Credit cards, personal loans and other mortgages can reduce your borrowing capacity.
- Credit history: Your repayment record and credit information may affect the lender’s decision.
- Loan structure: Your requested amount, repayment type and existing loan features influence the available options.
Lenders can apply different policies, so one lender’s decision may not match another’s.
Furthermore, a lender may approve less than your estimated usable equity. This can happen when your income, expenses or property valuation limits the amount you can borrow.
Bonus: Should You Renovate or Buy an Investment Property?
Some homeowners consider using their equity to improve their current home. Others use it towards a deposit on an investment property.
Neither strategy is automatically better. Each involves different costs, risks and financial objectives.
| Factor | Renovating Your Home | Buying an Investment Property |
| Main objective | Improve your living space and potentially increase resale value. | Seek rental income and potential long-term capital growth. |
| Ongoing costs | Higher mortgage repayments, maintenance and renovation-related expenses. | Additional loan repayments, maintenance, management fees and other property costs. |
| Potential benefit | Better functionality and enjoyment, with possible value gains. | Potential rental income and investment returns. |
| Main risk | Renovation costs may exceed the value added. | Vacancies, unexpected expenses or falling property values may affect returns. |
| Financial complexity | Often involves one property and a renovation project. | Usually involves additional property, tenancy and investment obligations. |
When Renovating May Make More Sense
Renovating may suit you if you like your current location, need more space and expect to remain in the property for several years.
It may also avoid some costs associated with moving, such as selling expenses and purchasing costs. However, you should compare those potential savings with the full cost of your project.
When Investing May Be Worth Exploring
An investment property may suit a different financial strategy, particularly if you can manage the additional responsibilities and financial risks.
However, rental income does not guarantee positive cash flow. You must account for interest, vacancies, repairs, insurance, management costs and relevant taxes.
You should also avoid assuming that investment borrowing automatically creates tax deductions. The Australian Taxation Office generally considers how borrowed funds are used when assessing interest deductibility.
For this reason, assess both options using realistic costs rather than relying on expected property growth alone.
Financial Disclaimer: This article provides general information only and does not constitute personal financial, credit or tax advice. Lending criteria, interest rates, fees and LMI requirements vary between lenders. Consider obtaining independent financial, tax or legal advice before making significant borrowing decisions.
Frequently Asked Questions
1. Is It Smart to Use Equity to Renovate?
It can be a sensible option when your renovation serves a clear purpose, your borrowing costs are manageable and your repayments remain affordable. However, you should compare the total cost of borrowing with the likely benefits. Renovations do not guarantee an increase in property value.
2. How Much Equity Can I Use to Renovate My House?
Many lenders use 80% of the property’s accepted value as a benchmark for calculating usable equity. Subtract your current mortgage balance from that amount. Your actual borrowing limit depends on the lender’s policies, valuation and assessment of your repayment capacity.
3. Can I Use Equity Without Paying Lenders Mortgage Insurance?
You may be able to access equity without new LMI if your total lending remains at or below 80% LVR and your lender’s conditions are satisfied. However, crossing that threshold does not automatically mean LMI applies in every case. Check your lender’s specific requirements before borrowing.
4. Is Redraw Better Than a Home Loan Top-Up?
Redraw may suit you if you have sufficient eligible extra repayments available. A top-up may be more suitable when you need additional borrowing beyond those funds. Compare access restrictions, fees, interest rates and repayment arrangements before choosing.
5. Will Renovating Increase My Property Value?
It may, but the result depends on the renovation, property condition, location and market conditions. Improvements that solve practical problems may appeal to buyers, although their added value can fall below their cost. Obtain independent advice before relying on projected resale figures.
6. Can I Use Equity to Renovate If I Still Owe Most of My Mortgage?
Possibly, but having a mortgage does not guarantee access to additional funds. Your lender will consider your current property value, outstanding balance, income, expenses and other debts. If your estimated usable equity is limited, you may need to save more or reduce the project’s scope.
7. Does Using Equity to Renovate Affect My Home Loan Repayments?
Yes, additional borrowing generally increases your outstanding debt and may increase repayments. The impact depends on the interest rate, amount borrowed and repayment term. Extending the loan term may reduce monthly repayments but increase the total interest you pay.
8. Should I Use Equity or Savings to Fund Renovations?
Using savings avoids the interest and fees associated with additional borrowing. However, using some equity may preserve cash for emergencies or other needs. The better option depends on your savings, borrowing costs and financial priorities. Compare both approaches before deciding.
Conclusion: Make Your Equity Work Without Overstretching
Using equity to renovate can be a practical way to improve your home without saving the entire project cost upfront. However, the decision should depend on affordability, realistic renovation costs and your long-term financial plans.
Start by calculating your usable equity and checking how the proposed borrowing affects your LVR. The 80% threshold deserves particular attention because exceeding it may introduce LMI costs or other lending conditions.
Next, compare a redraw facility, a home loan top-up and refinancing. Consider the full interest cost, not simply the monthly repayment. Most importantly, avoid assuming that every dollar spent on renovations will translate into an equal increase in property value.
Whether you are Buying a house or improving a property you already own, the same principle applies: borrowing should support your financial goals rather than place unnecessary pressure on your budget. A home buyer in Australia should understand both the benefits and risks before using property equity.
Ultimately, equity is a financing resource, not free money. Using it wisely means choosing improvements you can afford, keeping adequate financial reserves and borrowing only what your circumstances can comfortably support.
