What are Construction Loan Finance Requirements?

What Documentation Do You Need for Construction Finance?

Lenders require council-approved building plans, a fixed price building contract from a registered builder, and standard income verification before they'll assess your construction loan application. You'll also need proof of adequate insurance coverage once the build commences.

The building contract needs to include a detailed progress payment schedule that breaks down how funds will be released at each stage. Lenders match their drawdown schedule to these milestones, typically covering base stage, frame, lockup, fixing, and practical completion. Your contract should specify who holds responsibility for cost overruns, as most lenders won't increase the approved loan amount if your builder underestimates.

Consider a buyer planning a four-bedroom home in Buderim. Their builder provides a $680,000 fixed price contract with five progress payments. The lender reviews the contract, verifies the builder holds QBCC licensing, and checks that council approval is unconditional. The buyer also provides their most recent two payslips, tax returns, and a letter from their accountant confirming their deposit savings weren't borrowed. The application moves to formal approval within a week because every required document was provided upfront.

How Much Deposit Do Construction Lenders Require?

Most lenders require a 10% deposit of the total project cost, which includes both land and building expenses. If you already own the land, its current value can sometimes form part or all of your deposit, depending on when you purchased it and your equity position.

Deposit requirements get more complex when you're buying land and building simultaneously. The lender calculates 10% of the combined land purchase price and building contract value. If you're purchasing a house and land package through a developer in areas like Palmview or Aura, the land component is usually settled first, meaning you'll need enough funds to cover that purchase plus stamp duty before construction finance activates.

Some lenders accept a smaller deposit if you're building a primary residence and qualify under First Home Guarantee schemes, though this depends on the property's final value and your income. Others may increase the deposit requirement to 20% if you're an owner builder or constructing a spec home without a pre-sale contract. Your deposit must be genuine savings held for at least three months, or gifted funds with a signed declaration that they don't need to be repaid.

What Builder Qualifications Do Lenders Accept?

Your builder must hold current registration with the Queensland Building and Construction Commission and provide evidence of adequate insurance, including contract works and public liability cover. Lenders verify this directly with the QBCC before approving your construction loan.

The builder's financial stability matters as much as their licensing. Some lenders request the builder's most recent financial statements or proof they're not under administration. This protects you and the lender if the builder collapses mid-project, which leaves the home incomplete and the loan funds partially spent. Registered builders operating under a fixed price contract provide the most certainty, which is why lenders rarely approve cost plus contracts where the final amount isn't locked in.

Owner builders face stricter requirements. You'll typically need to demonstrate relevant trade qualifications, previous building experience, and a higher deposit of at least 20% to 30%. Lenders often cap owner builder construction funding at a lower loan-to-value ratio because the completion risk increases when the borrower is also managing the build. If you're renovating rather than building new, your home improvement loan application will need detailed quotes from licensed tradies and council approval if the changes are structural.

How Does the Progress Payment Schedule Work?

Lenders release funds in stages as the build progresses, not as a lump sum at the start. Each drawdown is triggered when your builder completes a milestone and requests payment, usually matching the schedule in your building contract.

A typical schedule includes five draws: base stage at around 10% to 15%, frame stage at 20% to 25%, lockup at 35%, fixing stage at 45%, and practical completion at the final 5% to 10%. Before releasing each payment, the lender arranges an independent inspection to confirm the work is complete to the required standard. You'll pay a Progressive Drawing Fee each time funds are released, usually between $300 and $500 per draw depending on your lender.

You only pay interest on the amount drawn down at each stage. If your total loan is $600,000 but only $150,000 has been released for base and frame, your interest charges apply to that drawn amount, not the full approved loan. Most borrowers make interest-only repayments during construction and convert to principal and interest once the build is finished and the keys are handed over. Some lenders require you to commence building within six months of loan approval or the funding offer lapses, so timing your council approval and builder availability is important.

What Happens If Your Build Goes Over Budget?

If construction costs exceed the original contract price, most lenders won't increase the approved loan amount. The builder is responsible for covering cost overruns under a fixed price building contract, which is why lenders favour this structure.

Variations requested by you as the owner are different. If you decide mid-build to upgrade your kitchen or add another bathroom, you'll need to fund those changes separately unless you apply for a loan variation before the work starts. Lenders assess variations on a case-by-case basis and may approve a small increase if your deposit buffer and income support it. The variation takes time to assess, so most builders won't start additional work until the extra funding is confirmed in writing.

In our experience, buyers who build on the Sunshine Coast often underestimate site costs. Sloping blocks common in areas like Buderim or Maleny can require significant earthworks, retaining walls, or extended driveways that weren't fully priced in the original site assessment. Before signing your building contract, get a detailed site cost report from your builder and factor those expenses into your total loan amount upfront. It's far harder to secure extra funding once construction has started.

Can You Use Equity From Your Current Home for Construction Finance?

You can use equity in an existing property to fund your deposit and even the full land and construction package if you have enough available. Lenders treat this as a refinancing exercise combined with a construction loan, where your current home acts as security until the new build is complete.

The lender values your existing property, subtracts any remaining mortgage debt, and calculates your usable equity. If your home in Noosa is worth $900,000 and you owe $400,000, you have $500,000 in equity. The lender will typically let you access up to 80% of the property's value minus your debt, which in this scenario gives you $320,000 in usable equity. That amount could cover a land purchase and your deposit for the building contract.

Once construction finishes, most buyers refinance again to consolidate the construction loan and any equity loan into a single home loan secured against the completed property. Your original home is then released from the lending arrangement if you're not keeping it as an investment. This approach works well if you're upgrading but need to live in your current home while the new one is being built.

What Rates and Fees Apply During Construction?

Construction loan interest rates are typically slightly higher than standard variable home loan rates during the building phase. Once construction finishes and you convert to a standard home loan, your rate usually decreases to match the lender's current residential loan pricing.

You'll pay a Progressive Drawing Fee each time the lender releases funds to your builder, as well as valuation and inspection fees. Some lenders charge a construction loan establishment fee separate from their standard application fee. These fees add up quickly, so ask for a full breakdown before committing to a lender. You may also need to pay council fees for your development application and building certification, which aren't part of the loan itself but still need to be budgeted.

The total cost depends on your lender, your deposit size, and whether you're building as an owner-occupier or investor. Owner-occupiers building a primary residence in growth corridors like Maroochydore or Caloundra generally secure slightly lower rates than investors constructing spec homes. Ask your mortgage broker to compare at least three lenders so you're not overpaying on fees or copping a higher rate than necessary.

Building a custom home on the Sunshine Coast gives you control over design and location, but the finance structure is more involved than a standard home purchase. Getting your documentation, deposit, and builder requirements sorted early means fewer delays once you're ready to start.

Call one of our team or book an appointment at a time that works for you.

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