How Construction Loans Differ from Standard Home Loans
A construction loan releases funds progressively as your build advances, not as a lump sum at settlement. You only pay interest on the amount drawn down at each stage, which means your borrowing costs remain lower during construction than they would with a traditional mortgage on a completed home.
Consider someone building a custom home in Oran Park on a 450-square-metre block. The land component might settle first with one drawdown, then the slab gets funded after the footings inspection, followed by the frame, lockup, fixing, and practical completion. Each stage triggers a progress inspection and a release of funds to the builder. Between those releases, interest accrues only on what has been drawn, not the full loan amount.
Most lenders structure construction finance with interest-only repayment options during the build phase. Once construction reaches practical completion, the loan converts to principal and interest repayments based on the full amount. That conversion is automatic under a construction to permanent loan structure, which avoids the need to reapply or refinance once the build is finished.
Progress Payment Finance and How Drawdowns Are Managed
Lenders release funds according to a progress payment schedule that aligns with the building contract. The builder submits a claim at each stage, the lender arranges a progress inspection, and funds are released directly to the builder once the work is verified.
In Oran Park, where land and build packages are common, the structure typically includes five or six drawdowns over a build period of six to nine months. The first drawdown covers the land purchase if it has not already settled separately. Subsequent drawdowns correspond to construction milestones such as base stage, frame stage, lockup, fixing, and completion.
Each drawdown attracts a progressive drawing fee, usually between $300 and $500 per inspection depending on the lender. Over a six-stage build, that adds up to around $1,800 to $3,000 in total fees. Some lenders cap the number of progress payments they will fund without additional cost, while others charge per inspection regardless of the number of stages. Knowing this structure before the loan is submitted allows you to factor those costs into your overall budget.
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Fixed Price Contracts Versus Cost Plus Structures
A fixed price building contract sets the total construction cost upfront, and the lender underwrites the loan based on that contract price plus the land value. The builder cannot claim more than the agreed amount unless variations are approved in writing and assessed by the lender.
A cost plus contract, on the other hand, charges the actual cost of materials and labour plus a margin or management fee. This structure is less common with volume builders but may apply to custom builds or owner builder finance arrangements. Lenders treat cost plus contracts with more caution because the final loan amount is not fixed at approval. You will need detailed costings, quotes from sub-contractors, and often a higher deposit to proceed with this type of structure.
In our experience, buyers building in growth areas like Oran Park are better served by fixed price contracts. The certainty around the final cost makes the construction loan application more straightforward, and there is less risk of cost blowouts that exceed the approved loan amount.
What Happens If You Cannot Commence Building Within the Set Period
Most construction loan approvals require you to commence building within a set period from the disclosure date, typically six months. If council approval or the development application is delayed, or if the registered builder cannot start on time, the loan approval may lapse.
Oran Park sits within Camden Council, where processing times for development applications can vary depending on the complexity of the design and whether the block falls within a precinct with existing design guidelines. For straightforward house and land packages on titled lots, approval is usually faster. For custom designs or blocks with slope or bushfire overlay, expect longer timeframes.
If the approval period is about to expire and the build has not started, contact your broker immediately. Most lenders will grant an extension if the delay is due to council processes rather than a change in your financial circumstances. That extension request needs to be lodged before the original approval expires, not after.
Interest Charges During Construction and How They Accumulate
During the construction phase, you only pay interest on the amount drawn down, not the full loan amount. That reduces your monthly outgoings while the build is underway, but interest still accumulates and is usually capitalised into the loan balance rather than paid out of pocket each month.
As an example, if $150,000 has been drawn down for land and base stage, and the construction loan interest rate is 6.5 per cent, monthly interest is roughly $812. Once the frame stage drawdown takes the total to $280,000, monthly interest rises to around $1,516. By practical completion, when the full $450,000 has been drawn, interest reaches approximately $2,437 per month.
Some buyers choose to make additional payments during construction to reduce the capitalised interest, particularly if they are living rent-free with family or still paying rent that is lower than the projected interest cost. Others prefer to hold their cash for the inevitable cost overruns or delays that occur during a build. Both approaches are valid, and the decision depends on your cash flow and risk tolerance.
Owner Builder Finance and Why Lenders Treat It Differently
If you are acting as an owner builder, most lenders will either decline the application or apply a higher interest rate and require a larger deposit. Owner builder finance carries more risk for the lender because there is no registered builder guaranteeing the quality or completion of the work.
You will need an owner builder permit from NSW Fair Trading, detailed quotes from all sub-contractors including plumbers and electricians, a construction draw schedule that itemises each stage, and proof that you have the experience or qualifications to manage the build. Even with those documents, the pool of lenders willing to fund owner builder projects is smaller, and the construction funding terms are less favourable than they would be with a licensed builder under a fixed price building contract.
We regularly see buyers underestimate the complexity of managing their own build while also satisfying lender requirements for progress inspections and staged payments. Unless you have genuine building experience and the time to coordinate trades and council inspections, working with a registered builder simplifies both the loan process and the construction timeline.
How Renovations and Home Improvement Loans Are Structured
A house renovation loan operates similarly to new home construction finance, with funds released progressively as work is completed. The difference is that you already own the property, so the loan is secured against the existing dwelling plus the anticipated value after renovation.
Lenders assess renovation finance based on the current property value, the scope of works, and the projected value post-renovation. If the numbers support it, the loan can cover both the renovation cost and any existing mortgage you need to refinance. Progress payments are managed the same way as a build, with inspections at agreed stages and drawdowns released to the builder or directly to you if you are coordinating trades yourself.
For older homes in Oran Park that were built before the recent development boom, renovation finance can unlock significant value. The existing housing stock in the area is limited, and well-executed improvements to an older dwelling often deliver a higher return than the cost of the works.
Call KM Financial Service to Structure Your Construction Loan Correctly
Getting the structure right before you sign the building contract prevents funding delays, unexpected fees, and cost blowouts during construction. Call one of our team or book an appointment at a time that works for you.
Frequently Asked Questions
How does a construction loan release funds during a build?
Funds are released progressively as construction advances, with each drawdown triggered by a progress inspection that verifies work has been completed to the stage specified in the building contract. You only pay interest on the amount drawn down at each stage, not the full loan amount.
What is a progressive drawing fee and how much does it cost?
A progressive drawing fee is charged by the lender each time they arrange a progress inspection and release funds to the builder. The fee typically ranges from $300 to $500 per inspection, which can total $1,800 to $3,000 over a standard six-stage build.
Can I get construction finance if I am acting as an owner builder?
Yes, but most lenders will require a higher deposit, apply a higher interest rate, and request detailed quotes from all sub-contractors plus proof of your building experience. The pool of lenders willing to fund owner builder projects is smaller than for builds managed by a registered builder.
What happens if council approval is delayed and I cannot start building on time?
Most construction loan approvals require you to commence building within six months of the disclosure date. If council approval is delayed, contact your broker to request an extension before the original approval expires, as most lenders will grant this if the delay is due to external processes rather than a change in your circumstances.
Do I pay interest during construction and how is it calculated?
Yes, you pay interest only on the amount drawn down at each stage, not the full loan amount. Interest is usually capitalised into the loan balance during construction rather than paid out of pocket each month, and once the build is complete, the loan converts to principal and interest repayments.
