Construction loan approval involves proving to a lender that you can service the debt throughout the building phase and that your project has realistic costings and timelines.
Orthodontists face a unique assessment process when applying for construction finance. Unlike purchasing an existing property where valuation is straightforward, lenders need to evaluate your income stability, the proposed dwelling's end value, and the builder's capacity to complete on schedule. The application requires more documentation than a standard home loan, and the approval timeline typically extends four to six weeks rather than two to three.
How Lenders Assess Your Income During Construction
Lenders calculate your borrowing capacity based on your practice income, but they also factor in the interest-only repayment structure during the building phase. During construction, you only pay interest on funds drawn down progressively as the build advances. This means your initial repayments are considerably lower than they will be once construction completes and the loan converts to principal and interest.
Consider an orthodontist with a taxable income of $280,000 annually who plans to build on land already owned in Brisbane's western suburbs. The land is valued at $450,000, and the fixed price building contract totals $620,000. The lender will assess whether the orthodontist can service interest payments on progressive amounts starting from the initial slab, then frame, then lockup stages. They'll also verify that once the build completes and the full loan amount converts to principal and interest repayments, the orthodontist can still comfortably meet the monthly obligation alongside existing practice commitments.
Council Approval and Development Application Requirements
Your construction loan cannot proceed to settlement until you provide proof of council approval. This includes an approved development application and building permit showing all conditions have been met. Lenders require these documents because they confirm the project is legally permeable and reduces the risk of construction delays due to compliance issues.
In our experience, delays in council approval represent one of the most common reasons construction loan settlements are postponed. Some lenders stipulate you must commence building within a set period from the disclosure date, typically six months. If council approval takes longer than anticipated, you may need to request an extension from your lender or risk the approval lapsing entirely.
The Progressive Drawing Fee and Progress Payment Schedule
Construction loans operate differently from standard home loans in how funds are released. Rather than receiving the full loan amount upfront, the lender releases funds in instalments aligned with your progress payment schedule. A quantity surveyor or building inspector conducts a progress inspection at each stage, confirms the work is complete to the required standard, and authorises the next drawdown.
Most lenders charge a progressive drawing fee each time funds are released. This fee typically ranges from $150 to $400 per draw, and you'll usually have five to six progress payments throughout the build: base stage, frame stage, lockup, fixing stage, practical completion, and final inspection. These fees add $900 to $2,400 to your total borrowing costs, which orthodontists should factor into their construction budget alongside other ancillary costs like legal fees and building insurance.
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Documentation Required for Construction Loan Applications
Beyond standard financial documentation proving your income and employment, construction loan applications require building-specific paperwork. You'll need to provide your signed fixed price building contract showing the total contract price and payment milestones. The lender will also request your council plans, evidence of council approval, a copy of your builder's insurance, and proof that your builder holds current registration with the relevant state authority.
For orthodontists operating through a practice trust or company structure, self-employed loans for dentists typically require two years of financial statements and tax returns even when applying for construction finance. The lender needs to verify consistent income across multiple years because the loan term extends beyond a typical approval, often 12 to 18 months from initial application through to practical completion.
How Interest Accumulates During the Building Phase
During construction, you only pay interest on amounts already drawn down rather than the full loan amount. This structure reduces your cash flow pressure while building, particularly important for orthodontists managing practice overheads, equipment financing, and potentially maintaining rental accommodation while the new home is under construction.
As an example, if your first progress payment releases $150,000 for site preparation and slab, your monthly interest obligation at a construction loan interest rate of 6.5% would be approximately $812. As each subsequent draw occurs, your interest payment increases incrementally. By practical completion when the full $620,000 has been drawn, your monthly interest payment would be approximately $3,358. Once the build completes and the loan converts from construction to a standard home loan structure, your repayments shift to principal and interest, typically higher than the interest-only amount during construction.
Registered Builder Requirements and Quality Construction Standards
Lenders will only approve construction loans where the builder holds current registration with the relevant state authority and provides appropriate insurance. This protects both you and the lender if the builder becomes insolvent mid-project or fails to meet quality construction standards. Your builder must also demonstrate a track record of completing projects of similar scale and complexity.
For custom home designs requiring specialist trades, lenders pay particular attention to the builder's capacity to coordinate plumbers, electricians, and other sub-contractors effectively. Delays in one trade can cascade through the entire progress payment schedule, extending your time in interest-only repayments and potentially triggering contract variations that increase the overall cost.
What Happens If Building Costs Exceed Your Approved Loan Amount
If construction costs exceed your approved loan amount due to variations or unforeseen expenses, you'll need to fund the difference from savings or request additional borrowing capacity. Lenders assess variation requests individually, requiring updated costings and evidence that the changes add value to the finished property. Some lenders allow a contingency buffer of 5% to 10% above the contract price within your initial approval, but this isn't universal.
Orthodontists with substantial equity in other properties or strong cash reserves in their practice may find it easier to secure approval for cost variations than those borrowing at maximum capacity. This is one reason why maintaining a buffer between your borrowing capacity and your actual loan amount provides valuable flexibility during the construction phase.
Approving your construction loan requires coordination between your builder, conveyancer, and mortgage broker to ensure all documentation aligns with lender requirements. Getting loan pre-approval before selecting your builder and finalising plans can streamline this process considerably. Call one of our team or book an appointment at a time that works for you to discuss how your practice income and construction plans align with current lender criteria.
Frequently Asked Questions
How long does construction loan approval take for orthodontists?
Construction loan approval typically takes four to six weeks, longer than standard home loan approval. Lenders need to assess your income, review building contracts, verify council approvals, and evaluate the builder's credentials before approving the application.
Do I pay interest on the full loan amount during construction?
No, you only pay interest on amounts already drawn down during the building phase. This means your interest payments start low and increase progressively as each stage of construction is completed and additional funds are released.
What happens if my builder goes over budget during construction?
If costs exceed your approved loan amount, you'll need to fund the difference from savings or request additional borrowing from your lender. Lenders assess variation requests individually and may require updated valuations and evidence that changes add value to the property.
Can I use a cost plus contract for construction loan approval?
Most lenders prefer fixed price building contracts because they provide certainty around total project costs. Cost plus contracts can be approved but typically require larger deposits and may attract higher interest rates due to increased risk.
What is a progressive drawing fee and how much does it cost?
A progressive drawing fee is charged each time your lender releases funds during construction, typically $150 to $400 per draw. With five to six progress payments throughout a standard build, total drawing fees add $900 to $2,400 to your borrowing costs.
