How to Finance a Property Purchase and Renovation

When you buy a house that needs substantial renovation before it's liveable, a standard home loan won't release the full amount upfront.

You'll need a construction loan structure that funds the purchase first, then releases renovation costs in stages as the work progresses. This type of lending allows you to acquire the property and complete the renovations under a single loan facility, paying interest only on what's been drawn down at each stage.

What Makes Purchase-Plus-Renovation Different from a Standard Home Loan

A purchase and renovation loan combines two funding requirements into one facility. The lender advances the purchase price at settlement, then holds the remaining renovation budget in reserve. As your builder completes each stage of work and you receive invoices, the lender releases funds according to a progressive drawdown schedule.

You only pay interest on the amount drawn down at each point. If you've drawn $500,000 for the purchase but haven't touched the $200,000 renovation budget yet, you're only paying interest on $500,000. Once your builder invoices for foundation work and the lender releases $40,000, your interest calculation adjusts to $540,000.

Consider a buyer who purchases a 1950s weatherboard in Mount Eliza for $780,000. The property needs a full kitchen and bathroom replacement, rewiring by licenced electricians, new plumbing, and structural work to open up the living areas. Total renovation budget sits at $220,000. Rather than taking out a $780,000 home loan and then scrambling for renovation funds separately, they structure a $1,000,000 construction facility. The purchase component settles normally. The renovation component releases in five stages as the registered builder completes each phase and submits progress claims.

How the Progressive Drawdown Process Actually Works

The lender won't release renovation funds based on your say-so. Each drawdown requires a progress inspection to confirm the work matches the builder's claim. Most lenders charge a Progressive Drawing Fee for each inspection, typically between $300 and $500 per stage.

Your builder submits a payment claim showing what's been completed. The lender arranges an inspection, usually within a few business days. Once the inspector confirms the work is done to the claimed stage, the lender releases that portion of the budget. The funds go directly to the builder or, in some structures, to you to pay the builder.

The progress payment schedule usually breaks down into four to six stages: base and frame, lock-up, fixing, practical completion, and final completion. Your building contract will specify the percentage of total costs due at each stage. The lender's drawdown schedule needs to align with these percentages.

Construction Loan Interest Rates and Repayment Structures

Construction loan interest rates typically sit slightly higher than standard variable home loan rates. The difference reflects the additional administration and risk involved in staged funding. You're looking at a margin of around 0.10% to 0.30% above the lender's standard variable rate, depending on your deposit size and the lender's appetite for this type of lending.

During the construction or renovation phase, most lenders offer interest-only repayment options. You're not required to pay down principal while the work is underway. Once the renovation reaches practical completion, the loan typically converts to a standard principal and interest home loan with the repayment term you've chosen.

If you're using an owner builder arrangement rather than a registered builder, your lender options narrow considerably. Most major banks require a licenced, registered builder with appropriate insurance. Owner builder finance exists but usually comes from smaller lenders with higher rates and lower loan-to-value ratios.

What Happens Between Purchase and Starting Renovation Work

Most construction loan approvals require you to commence building within a set period from the Disclosure Date, usually between three and twelve months depending on the lender. This clause exists because lenders base their valuation on the completed project. If you delay indefinitely, market conditions change and the valuation assumptions no longer hold.

You need council approval before the lender will commit to the renovation component. Some lenders will approve the purchase portion conditionally while you're still waiting on your development application, but they won't formally approve the full facility until council plans are stamped.

In Mount Eliza, where many properties sit on larger blocks with heritage overlays or vegetation protection zones, council approval timelines can stretch beyond the standard six to eight weeks. Factor this into your settlement timing. If you're buying at auction or with a short settlement period, you may need to settle on the purchase with a standard loan, then refinance into a construction facility once your permits are through. That approach adds costs and complexity, so where possible, negotiate a longer settlement period upfront.

Fixed Price Contracts vs Cost Plus Structures

Lenders strongly prefer fixed price building contracts for renovation work. A fixed price contract states the total job cost upfront, with variations handled through a formal process. The lender knows exactly how much they're funding and can match their progressive drawdown to the builder's payment claims.

A cost plus contract, where you pay the builder's actual costs plus a margin, creates uncertainty. The final cost isn't locked in. Most mainstream lenders won't touch cost plus arrangements for this reason. If your renovation is complex enough that a fixed price doesn't make sense, you're looking at a much smaller pool of lenders and higher rates.

Your building contract also needs to include a detailed progress payment schedule that breaks down when each portion of the total price becomes due. This schedule needs to align with practical stages of work, not arbitrary percentages. A lender won't release 50% of the budget if only 30% of the work is complete, regardless of what your contract says.

Borrowing Capacity Considerations for Renovation Projects

Your borrowing capacity gets assessed on the full loan amount from day one, even though you're only drawing down the purchase price initially. The lender calculates serviceability based on the total facility limit at the expected interest rate, including the renovation component you haven't drawn yet.

This matters if you're stretching your borrowing capacity. Even though you're only paying interest on what's drawn, you need to qualify for the full amount. If the purchase price alone puts you near your limit, adding a renovation budget on top might push you over what the lender will approve.

Deposit requirements also apply to the total project cost, not just the purchase price. If you need a 20% deposit to avoid lender's mortgage insurance, that's 20% of the purchase price plus the renovation budget combined. On a $780,000 purchase with $220,000 in renovations, your deposit needs to cover $200,000, not just the $156,000 required for the purchase alone.

If you're considering a renovation project, speaking with a finance broker who understands construction funding structures will show you which lenders work with your specific scenario. Not all lenders offer the same flexibility around deposit structures, progress payment timing, or owner contributions between stages.

Call one of our team or book an appointment at a time that works for you. We'll walk through your purchase and renovation plans, show you what's required from a lending perspective, and structure the application to match your builder's payment schedule.

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