Top 10 Ways to Fund Your Renovation with a Home Loan

Renovation Funding Sits Inside Your Current Loan Structure

You can fund a renovation by increasing your existing loan, refinancing to access equity, or setting up a split loan with a dedicated construction portion. Most lenders allow you to draw additional funds against your property's current value, provided you have enough equity and sufficient income to service the higher repayments.

Consider a couple who bought a home 18 months ago and now want to add a second bathroom. They owe $480,000 on a property now worth around $550,000. Their equity position is $70,000, which gives them room to borrow more without crossing the 80% loan-to-value threshold. They could refinance to access that equity and draw an additional $40,000 to fund the renovation, bringing their total loan to $520,000 while staying under the 80% LVR mark. That approach avoids Lenders Mortgage Insurance and keeps their borrowing costs contained.

The application process mirrors a standard loan review. Your lender assesses your current income, commitments, and the projected value of the property after the renovation is complete. That projected value is often supported by a desktop valuation or a full bank valuation, depending on the amount you're borrowing. Some lenders will accept detailed quotes from licensed builders as evidence of scope and cost, while others require a more formal contract before they release funds.

Fixed or Variable Rate for Your Renovation Portion

You can fix the renovation portion of your loan, keep it variable, or split it across both. A variable rate gives you flexibility to make extra repayments as the renovation progresses and you get invoices in stages. A fixed rate locks in your repayments but usually comes with limits on how much extra you can repay each year without incurring break costs.

In our experience, buyers funding a renovation over six to twelve months tend to prefer a variable rate structure because tradespeople rarely invoice in one lump sum. You might pay your electrician in two stages, your plumber in three, and your builder across four progress payments. A variable rate lets you redraw or pay down the balance without penalty, which aligns with the stop-start nature of renovation cash flow.

If you're renovating while interest rates are volatile, a split loan can make sense. You fix part of the loan to protect your baseline repayment, then keep the renovation portion variable so you can pay it down faster once the work is finished. That structure gives you both certainty and control.

Equity Release Versus Increasing Your Existing Loan

Releasing equity means borrowing against the value your property has gained since you bought it. Increasing your loan means topping up your current balance without refinancing the whole loan to a new lender. Both approaches give you access to cash, but the mechanics and costs differ.

If you stay with your current lender and increase your loan, you usually avoid application fees and valuation costs. You keep your existing rate, your offset account stays linked, and the process takes a few weeks rather than a few months. If you refinance to a new lender to release equity, you may access a lower rate or better loan features, but you'll pay discharge fees to your old lender, application fees to the new one, and possibly settlement costs.

The decision comes down to whether your current loan still serves you. If your rate is uncompetitive or your loan lacks an offset account, refinancing while you access equity can solve two problems at once. If your rate is fine and your features suit your needs, topping up with your existing lender is usually the more efficient path.

Construction Loan Features That Apply to Renovations

Some lenders treat a large renovation as a construction project and apply the same loan structure they use for new builds. That means progress payments released in stages as the work is completed, with interest-only repayments until the renovation is finished. You pay interest only on the amount drawn down, not the full approved limit, which keeps your repayments lower during the build.

This structure works when your renovation exceeds $50,000 or involves structural work like extensions, second storeys, or reconfiguring floor plans. Your builder provides the lender with a schedule of works, and the lender releases funds after inspecting each stage. You don't get access to the full amount upfront, which protects both you and the lender if the project stalls or the builder walks off site.

Not all lenders offer progress payment structures for renovations under $100,000. Some release the full amount in one drawdown and expect you to manage payments to tradespeople yourself. If your renovation involves multiple contractors over several months, ask your broker which lenders support staged funding and whether that feature is included at no additional cost.

Interest-Only Repayments During the Renovation Period

You can request interest-only repayments on the renovation portion of your loan while the work is underway. That reduces your monthly outgoings during a period when you're also paying rent elsewhere, covering tradesperson deposits, or managing temporary accommodation costs. Once the renovation is complete, you switch back to principal and interest repayments and start paying down the balance.

Interest-only loans are not automatically approved for renovations. Your lender will want to see that you can afford the principal and interest repayment once the interest-only period ends. They assess your income, your other commitments, and the loan-to-value ratio after the renovation is finished. If your projected LVR sits above 80%, some lenders will decline the interest-only request or ask you to pay LMI.

An interest-only period typically runs for one to five years. For a renovation, a 12-month interest-only term is common. You use that year to finish the work, move back in, and stabilise your budget before the higher repayments start. The interest rate on an interest-only loan is often slightly higher than the equivalent principal and interest rate, so factor that margin into your budget.

Offset Accounts and Redraw Facilities During Construction

An offset account linked to your loan reduces the interest you pay by offsetting your savings balance against your loan balance. If you have $20,000 sitting in an offset account and your loan balance is $500,000, you only pay interest on $480,000. That feature is useful during a renovation because you can park surplus income in the offset and reduce interest costs while you wait for the next tradie invoice.

A redraw facility lets you access any extra repayments you've made on your loan. If you've paid an extra $10,000 off your loan over the past year, you can redraw that amount to cover renovation costs. Redraw is less flexible than an offset because some lenders charge fees, limit how often you can redraw, or require a minimum redraw amount. Offset accounts give you instant access to your own cash without restrictions.

If your renovation is going to take six months and you're managing multiple payments, an offset account linked to a variable rate loan gives you the most control. You deposit funds as you receive them, reduce your interest bill daily, and withdraw cash as invoices arrive without waiting for lender approval.

Borrowing Capacity and How Renovations Affect Your Serviceability

Lenders assess your borrowing capacity by comparing your income to your existing commitments, then adding the proposed renovation loan to see if you can service the combined debt. Your capacity depends on your household income, any other loans or credit cards, and your living expenses. A renovation that increases your total loan by $50,000 might increase your monthly repayment by $300 to $400, depending on the interest rate and loan term.

If you're already close to your maximum borrowing capacity, adding a renovation loan can push you over the serviceability threshold. Lenders use a buffer when they assess your application, typically adding 3% to the current interest rate to ensure you can still afford repayments if rates rise. If your income has increased since you first bought the property, or if you've paid down other debts, your capacity may have improved enough to absorb the renovation loan comfortably.

Some lenders will lend up to 95% of the property's value for a renovation if you're willing to pay LMI. Others cap renovation lending at 80% or 90% regardless of insurance. Your broker can model your serviceability across multiple lenders before you commit to a builder, so you know exactly how much you can access and what your repayments will look like.

Documentation Lenders Require for Renovation Finance

You'll need quotes or contracts from licensed tradespeople, proof of income, recent loan statements, and a valuation or estimate of your property's current worth. If the renovation is structural, lenders usually ask for council approval or a building permit before they release funds. If it's cosmetic work like kitchens, bathrooms, or flooring, quotes from suppliers and installers are often enough.

Lenders want to see that the renovation will add value to the property, not just satisfy your personal taste. A $60,000 kitchen renovation in a home worth $550,000 is generally viewed as value-adding. A $60,000 home theatre in the same property might be questioned. The bank's valuer considers whether the renovation will lift the property's market value by an amount that justifies the additional borrowing.

If you're coordinating the renovation yourself and hiring individual tradespeople rather than a single builder, some lenders will ask for a more detailed scope of works. They want confidence that the project is planned, costed, and likely to be completed. Missing documentation is the most common reason renovation loan applications stall, so gather your quotes and permits before you lodge.

Refinancing an Existing Loan to Fund the Renovation

Refinancing lets you move your loan to a new lender, access equity for the renovation, and potentially secure a lower interest rate in the same transaction. If your current loan is costing you more than the market rate, refinancing to reduce your rate while accessing renovation funds makes financial sense.

The refinance process involves a full loan application, a property valuation, and a settlement period of four to eight weeks. You'll pay discharge fees to your old lender, application fees to the new lender, and possibly valuation or settlement costs. Those fees typically range from $800 to $1,500 in total. If the rate saving is meaningful and you need to access equity anyway, refinancing covers both objectives in one approval.

Some lenders offer cashback incentives for refinances, which can offset your upfront costs. A $2,000 cashback on a refinance of $500,000 covers most of your fees and reduces the cost of switching. Not all lenders allow you to use cashback to fund renovation costs directly, but it improves your overall cash position during the project.

How Owner-Occupied and Investment Property Renovations Differ

If you're renovating an investment property, lenders assess the loan using rental income projections rather than just your personal income. The interest on an investment property loan is typically tax-deductible, which improves your cash flow position, but lenders usually apply a discount to the rental income when they calculate serviceability, often around 80% of the expected rent.

Owner-occupied renovation loans tend to have slightly lower interest rates than investment loans, and you have access to a wider range of lenders. Renovation costs on an owner-occupied property are not tax-deductible, but the approval process is often faster because lenders don't need to assess rental income or review tenancy agreements.

If you're planning to renovate and then rent the property out, or if you're already living elsewhere and treating this as an investment project, the loan structure and interest rate will reflect that intention. Speak with your broker before you lodge the application so the loan is structured correctly from the start. Changing a loan from owner-occupied to investment after settlement can trigger rate increases and require lender consent.

Call one of our team or book an appointment at a time that works for you. We'll walk through your current loan, your equity position, and the renovation funding options that fit your situation without locking you into a structure that doesn't suit how you want to manage the project.

Frequently Asked Questions