Construction Loans to Purchase a Renovation Project

How Construction Finance Works for Renovation Projects

Construction finance for a renovation project differs from a standard home loan because the bank advances funds progressively as the work is completed. Rather than receiving the full loan amount upfront, you draw down funds in stages, with each drawdown released after a progress inspection confirms the work is complete. This structure means you only pay interest on the amount drawn down at each stage, which can make a substantial difference during the build period when you're managing both construction costs and living expenses.

In San Remo and the surrounding coastal areas, we're seeing growing interest in purchasing older weatherboard or fibro homes close to the waterfront, knocking them down, and rebuilding. The appeal is clear: you secure a position in an established pocket near Newhaven or the San Remo foreshore, often on a larger block than you'd find in newer subdivisions, while creating a modern home designed for coastal living.

Consider a buyer who purchases a dated 1970s weatherboard cottage on a 700-square-metre block two streets back from the foreshore for $580,000. The plan is to demolish and build a new 220-square-metre home with an estimated construction cost of $440,000. The total project cost sits around $1,020,000, and the buyer has a $220,000 deposit. A construction loan allows them to purchase the land, cover demolition, and fund the build through progressive drawdowns tied to the construction draw schedule.

Understanding the Progress Payment Schedule

The progress payment schedule is the mechanism that controls when funds are released. Typically, a residential construction project will have five to six stages: base stage (slab or footings), frame stage, lock-up stage (roof and windows complete), fixing stage (internal fit-out), and practical completion. Each stage represents a percentage of the total contract value, and your lender will only release funds once their valuer or building inspector confirms that stage is complete.

Your registered builder will submit invoices tied to these stages, often under a fixed price building contract. The lender then arranges a progress inspection, which attracts a Progressive Drawing Fee of around $300 to $400 per inspection depending on the lender. Once the inspection confirms the work matches the claimed stage, the funds are released directly to the builder or into your nominated account for you to pay the builder and any sub-contractors like plumbers or electricians.

In the San Remo example above, the buyer's lender released $88,000 at base stage (20% of the build cost), $132,000 at frame stage (30%), $110,000 at lock-up (25%), $88,000 at fixing (20%), and the final $22,000 at practical completion (5%). Between each stage, the buyer paid interest only on the cumulative amount drawn down, keeping repayments manageable while the home was under construction.

Council Approval and Timelines for Coastal Builds

Before construction finance is approved, you'll need council approval for the development application. In Bass Coast Shire, where San Remo sits, planning and building permits can take several months depending on the complexity of the design and any overlay controls that apply to your block. Coastal locations often have additional considerations around bushfire risk, native vegetation, or environmental significance, which can extend approval times.

Most lenders require you to commence building within a set period from the Disclosure Date, typically six to twelve months. If your council approval process runs longer than expected, or if your builder's schedule pushes out the start date, you may need to seek an extension from your lender. This is particularly relevant in areas like San Remo where demand for quality construction has increased and builder availability can be constrained during peak periods.

Once council plans are stamped and your builder is ready to start, the construction funding formally begins. The first drawdown usually covers the land purchase if you're buying and building simultaneously, or it covers demolition and base stage if you already own the block.

Renovation Finance Versus Knock-Down Rebuild

If you're retaining the existing structure and renovating rather than demolishing, the financing structure changes slightly. A house renovation loan still uses progressive drawdowns, but the initial valuation includes the existing dwelling, which can increase your borrowing capacity compared to vacant land. Lenders assess the scope of works, the builder's quote, and whether the renovation adds sufficient value to justify the loan amount.

Consider a scenario where a buyer purchases a solid brick home in Coronet Bay for $520,000 with plans to add a second storey, creating ocean views and an additional two bedrooms. The renovation cost is $280,000, bringing the total project to $800,000. The buyer has a $160,000 deposit and needs $640,000 in construction funding. Because the existing home remains liveable during the early stages, the buyer avoids paying rent elsewhere, which offsets the interest-only repayment during construction.

Renovation projects often involve more variable costs than new builds because once walls are opened, unforeseen issues like outdated wiring or structural repairs can emerge. For this reason, lenders typically require a detailed scope of works, council approval for the renovation, and a contract with a registered builder rather than an owner builder arrangement. Owner builder finance is available in some cases, but it attracts stricter lending criteria and may require a larger deposit.

Managing Interest Costs During Construction

During the construction period, most lenders offer interest-only repayment options, meaning you only pay the interest accrued on the drawn amount each month without reducing the principal. This keeps your monthly outgoings lower while you're managing the build, particularly if you're still paying rent or living elsewhere during construction.

The structure also means you're not paying interest on the full loan amount from day one. If your total loan is $800,000 but only $200,000 has been drawn after the first two stages, your interest charges apply to $200,000, not the full amount. As each stage is completed and funds are released, your interest payment increases incrementally.

Once construction is complete and you've moved in, the loan typically converts to a standard principal and interest home loan, often called a construction to permanent loan. This conversion happens automatically with most lenders, meaning you don't need to reapply or refinance. The construction loan interest rate during the build period is usually the same as the ongoing variable rate, though some lenders offer fixed rate options once the loan converts to principal and interest repayments.

Choosing the Right Lender for Your Project

Not all lenders offer the same construction loan products, and some are more suited to specific project types than others. If you're buying a house and land package from a volume builder in a new estate, most mainstream banks will have standard processes and quick turnaround times. But if you're undertaking a custom design or a renovation project on an older coastal property, you'll want a lender experienced with those builds and comfortable with the additional complexity.

As a mortgage broker in San Remo, we access construction loan options from banks and lenders across Australia, which means we can match your specific project to a lender that understands it. A lender that's cautious about coastal locations or older homes might decline a knock-down rebuild in San Remo, while another lender sees the strong demand for modern homes in coastal pockets and approves it without hesitation.

The construction loan application process involves submitting your council approval, building contract, detailed costings, and proof that your builder is registered and insured. If you're using a cost plus contract rather than a fixed price contract, some lenders will apply additional scrutiny or require a larger contingency buffer to account for price variation. We regularly work with clients on coastal renovation and rebuild projects, and positioning the application correctly from the outset makes a measurable difference to approval speed and loan terms.

Whether you're planning a knock-down rebuild near the foreshore or a substantial renovation on an older weatherboard cottage, the right construction finance structure allows you to build your dream home while managing your cash flow and interest costs throughout the project. Call one of our team or book an appointment at a time that works for you to discuss your project and the lenders that align with your plans.

Frequently Asked Questions