A construction loan application that goes through on the first pass requires more supporting documentation than a standard purchase, but the process is far less complicated when you know what lenders are actually assessing.
Most banks will fund construction loans for registered builders working under a fixed price building contract, but the approval depends on three core elements: detailed costings, a realistic draw schedule, and council-approved plans. If any of those documents are incomplete or inconsistent, the valuer will flag it and the approval will stall.
Get council approval before you apply
Your development application should be approved and stamped by council before you lodge a construction finance application. Lenders will not issue formal approval on conditional DA status, and most valuers will not complete an 'as if complete' valuation without sighting council plans.
For a knockdown rebuild in the Inner West, council turnaround can stretch beyond three months depending on the local planning controls and whether you are building in a heritage conservation area. If you are working on suitable land that requires earthworks, stormwater redirection, or tree removal, expect additional conditions and longer timeframes.
Use a fixed price building contract
Lenders prefer a fixed price building contract over a cost plus contract because the scope and total cost are defined upfront. The contract should include a detailed specification of finishes, fixtures, and materials so the valuer can assess the completed value with certainty.
Consider a business owner building a custom home in Balmain with a registered builder. The contract lists the total build at $950,000 and includes a progress payment schedule tied to six stages: slab, frame, lockup, fixing, practical completion, and final inspection. The lender uses that schedule to set the construction draw schedule, releasing funds only after each stage is verified by a progress inspection. The borrower pays interest only on the amount drawn down during construction, then converts to a standard home loan once the occupation certificate is issued.
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Submit a line-by-line costing breakdown
The valuer will compare your builder's quote against industry benchmarks for quality construction in your area. If the contract price appears low relative to the scope, they will assume cost blowouts or reduced quality and may discount the completed valuation.
Your costing should be broken down by trade, not presented as a lump sum. Include separate line items for plumbers, electricians, concreters, tilers, painters, and any other sub-contractors. If you are using owner builder finance, you will need signed quotes from each trade and evidence that you hold an owner builder permit in your state.
Match your draw schedule to actual cash flow
The progress payment finance structure means funds are released in instalments as each stage is completed, so your builder needs working capital to pay sub-contractors before the next drawdown arrives. If your builder is undercapitalised, they may ask for front-loaded payments or larger deposits, which most lenders will not support.
A typical construction funding arrangement releases five to six payments over a build period of six to nine months. The lender will charge a Progressive Drawing Fee each time funds are released, usually between $300 and $500 per drawdown. Some lenders also apply a Progressive Payment Schedule fee upfront, so confirm the total cost structure before you commit.
Understand how interest accrues during the build
During construction, you only pay interest on the progressive drawdown amounts, not the full loan amount. Repayments are calculated on an interest-only basis until the build is finished and the loan converts to principal and interest or remains interest-only if structured as an investment.
In our experience, borrowers underestimate how much interest will accumulate during the build phase, particularly if the project runs over time. If you have sold an existing property to fund the land and construction package, the holding cost during construction can add several thousand dollars to your budget. Make sure your cash flow projection accounts for overlapping repayments if you are managing a bridging period.
Confirm your builder is registered and insured
Lenders will only release construction funding to a registered builder or, in limited cases, to an owner builder with appropriate permits and trade qualifications. Your builder must hold current home warranty insurance, and the policy needs to cover the full contract value.
If you are planning a house renovation loan or home improvement loan that involves structural changes, council plans and a building permit are still required even if the project does not qualify as new home construction. Lenders treat renovations with the same level of documentation scrutiny as a land and build loan when the works exceed a certain value threshold.
Allow time for the valuation and credit assessment
Once your construction loan application is lodged with complete documentation, the lender will order an 'as if complete' valuation. The valuer assesses the land value, reviews the building contract and council plans, then estimates the market value of the finished property.
If the valuation comes in below the combined land and construction cost, you will need to reduce the loan amount or increase your deposit. Valuation shortfalls are common when building a custom design in an area dominated by older housing stock, because comparable sales data for new builds may be limited.
We regularly see applications delayed by missing documents, inconsistent costings, or builders who cannot provide adequate insurance. The approval process for construction finance moves much faster when everything is submitted in one pass, so take the time to prepare the full package before you lodge.
Call one of our team or book an appointment at a time that works for you. We work with business owners across the Inner West and Australia-wide, and we can help you access construction loan options from banks and lenders that suit your project and cash flow.
Frequently Asked Questions
What documents do I need before applying for a construction loan?
You need council-approved plans, a fixed price building contract with detailed costings, proof your builder is registered and insured, and a progress payment schedule. Lenders will also require standard income and deposit verification.
How does interest work during the construction phase?
You only pay interest on the amount drawn down, not the full loan amount. Repayments are interest-only during construction, and the loan converts to a standard structure once the build is complete.
Can I use a cost plus contract for construction finance?
Most lenders prefer a fixed price building contract because the total cost and scope are defined upfront. Cost plus contracts carry higher risk and are harder to value, so fewer lenders will support them.
What happens if the valuation comes in lower than my build cost?
You will need to reduce the loan amount or increase your deposit to cover the shortfall. This is common when building a custom home in areas with limited comparable sales data for new builds.
How long does construction loan approval take?
With complete documentation, approval can take two to three weeks. Delays are common when council plans, costings, or builder insurance are missing or inconsistent.
