Top tips to secure construction finance

Building in the Blue Mountains means working with sloped blocks, bushfire zones, and council requirements that add layers to your construction finance application.

Most lenders assess construction loans differently to standard home loans because the security doesn't exist yet. You're borrowing against plans and a contract, which means lenders need more detail upfront and apply tighter criteria. Understanding what lenders look for before you apply saves time and keeps your project on schedule.

What lenders assess before approving construction finance

Lenders evaluate your deposit, your builder's credentials, the contract type, and whether the project meets their risk profile. You'll typically need at least 10% genuine savings plus enough to cover costs, and most lenders require a registered builder working under a fixed price building contract. The land must be suitable for construction and meet any bushfire or environmental overlays that apply in the Blue Mountains.

Consider a buyer who owns land in Springwood outright and wants to build a custom design on a sloped block. The lender will assess the building contract, the builder's insurance and registration, the council approval, and the cost breakdown. If the builder is registered, the contract is fixed price, and the development application is approved, the finance structure is straightforward. If the buyer is an owner builder or the block requires significant cut and fill, fewer lenders will participate and the deposit requirement increases.

Fixed price contracts and why lenders require them

A fixed price building contract states the total build cost and locks in the scope of work. Lenders prefer this structure because it reduces the risk of cost blowouts and gives certainty around the loan amount. A cost plus contract, where the builder charges actual costs plus a margin, introduces variability that most mainstream lenders won't accept.

Your contract should list the inclusions, exclusions, and the progress payment schedule tied to construction milestones. Lenders use this schedule to determine when funds are released during the build. If your contract includes provisional sums for items like landscaping or driveways, make sure those amounts are realistic. Underestimating costs at contract stage can leave you short when the build reaches that phase.

How progressive drawdown works during the build

Construction loans release funds in instalments as the build reaches agreed stages, such as slab down, frame up, lockup, fixing, and practical completion. The lender only charges interest on the amount drawn down, not the full loan amount, which keeps repayments lower during construction. Most lenders also allow interest-only repayment options during the build phase.

Before each drawdown, the lender arranges a progress inspection to confirm the stage is complete. Once the inspector signs off, the lender releases funds to the builder. This process repeats at each milestone. You'll also pay a Progressive Drawing Fee or Progressive Payment Schedule fee, which covers the cost of inspections and administration. This fee varies by lender but typically ranges from a few hundred to over a thousand dollars depending on how many drawdowns are scheduled.

Land and construction package or land first

If you're purchasing land and building in one transaction, a land and construction package combines both elements into a single loan. The lender settles the land purchase first, then moves into the construction drawdown phase. You'll need to commence building within a set period from the Disclosure Date, usually six to twelve months, depending on the lender.

If you already own the land, the construction loan is assessed on the improved value of the land plus build, and you may be able to use existing equity to cover part of the deposit. Buyers in areas like Katoomba or Blackheath who own land outright often find this reduces the cash deposit required, but lenders will still want to see genuine savings to cover costs like council plans, permits, and any site works not included in the building contract.

Why builder credentials matter to the lender

Lenders require a registered builder with current insurance because it protects both you and the lender if something goes wrong during construction. The builder must hold home warranty insurance, and the contract must comply with the Home Building Act. If you're planning to act as an owner builder, fewer lenders will approve the loan, and those that do will typically ask for a larger deposit and charge a higher construction loan interest rate.

We regularly see buyers in the Blue Mountains who want to use a local builder they trust but haven't checked whether that builder meets lender requirements. Before you sign a contract, confirm the builder is registered, insured, and has a history of completing projects on time. Lenders can decline applications based on builder track record alone, especially if there have been incomplete projects or disputes.

Site costs and council approval in the Blue Mountains

Building in areas like Wentworth Falls or Leura often involves additional site costs for retaining walls, bushfire compliance, or services connection. These costs sit outside the building contract but still form part of your total project budget. Lenders want to see that you've accounted for these expenses and have access to funds to cover them.

Your development application must be approved before most lenders will issue formal loan approval. If you're still waiting on council approval, some lenders will provide conditional approval, but funds won't be released until all conditions are satisfied. The Blue Mountains council has specific requirements around bushfire attack level ratings, vegetation clearing, and water management, so factor in time for the approval process when planning your build timeline.

What documents you'll need for a construction loan application

Your construction loan application will require the fixed price building contract, council approval, builder registration and insurance details, and a cost breakdown showing how the loan amount will be used. You'll also need the same income and asset documents required for a standard home loan, including payslips, tax returns if you're self-employed, and bank statements showing your deposit and savings history.

If you're refinancing an existing property to fund the build, the lender will also assess the equity available and whether your income can service both the construction loan and any existing debt. Buyers upgrading from a smaller home to a custom build often refinance their current property to access equity, then sell once the new home is complete.

Interest-only repayments and converting to principal and interest

During construction, most buyers choose interest-only repayment options to keep costs down while funds are being drawn. Once the build reaches practical completion and you move in, the loan converts to a standard home loan with principal and interest repayments. Some lenders call this a construction to permanent loan because it transitions automatically without needing to reapply.

The interest rate during construction is usually variable, though some lenders allow you to lock in a fixed rate once the loan converts. Rates vary depending on your deposit size, the lender, and your financial position, so it's worth comparing options before you commit. Additional payments during the construction phase can reduce the balance before the loan converts, which lowers your ongoing repayments.

Renovations and knockdown rebuilds

If you're renovating rather than building from scratch, the finance structure is similar but lenders assess the scope of work and whether the property remains liveable during construction. A cosmetic renovation might be funded through a personal loan or redraw, but a major renovation requiring council approval and a registered builder will usually need a construction loan.

Knockdown rebuilds are treated as new construction because the original dwelling is demolished. The lender values the land only, and the loan is structured as a land and build loan. If you're knocking down and rebuilding on a block in Lawson or Hazelbrook, make sure the land is suitable for the new design and that any bushfire or slope constraints are addressed in the plans before you apply.

Call one of our team or book an appointment at a time that works for you. We work with buyers across the Blue Mountains and access construction loan options from banks and lenders across Australia, matching your project to lenders who understand the area and the build type you're planning.

Frequently Asked Questions