What are Progressive Drawdown Construction Loans?

Progressive drawdown means your lender releases your construction loan in instalments as building work is completed and inspected.

You only pay interest on the amount drawn down so far, not the full loan amount, which keeps costs lower during the build. For NSW Ambulance employees working rotating shifts and managing tight budgets, that difference can mean several hundred dollars a month staying in your account instead of going to the bank.

How Progressive Drawdown Works During a Build

Your lender releases funds in stages based on a progress payment schedule agreed with your registered builder. A typical schedule includes five to six stages: base or slab, frame, lock-up, fixing, practical completion, and final inspection. After each stage is completed, your builder requests payment, the lender arranges a progress inspection to confirm the work, and funds are released directly to the builder or into your account depending on your contract type.

Consider a paramedic building a four-bedroom home under a fixed price building contract worth $450,000. At the frame stage, around 25% of the build is complete, so the lender releases $112,500. The borrower pays interest only on that $112,500 plus any earlier drawdowns, not the full $450,000. By lock-up stage, $270,000 has been drawn, and interest adjusts accordingly. The interest-only repayment structure during construction keeps monthly costs around $1,400 instead of $2,800 if the full loan were active from day one.

Interest Costs and Fees During Construction

You're charged interest only on the amount drawn down at each stage, calculated daily and charged monthly. If $150,000 has been released and the construction loan interest rate is 6.5%, your monthly interest bill is roughly $810. Once another $100,000 is drawn at the next stage, interest rises to around $1,350 per month. Most lenders also charge a Progressive Drawing Fee of $150 to $300 per inspection, typically five to six times across the build, adding $900 to $1,800 to total costs.

In our experience, NSW Ambulance employees often underestimate how quickly those interest payments add up if the build drags beyond the expected timeline. A six-month build that stretches to ten months means four extra months of interest-only payments, which can be $5,000 or more depending on how much has been drawn.

Land and Construction Packages vs Renovations

Progressive drawdown applies whether you're building on land you already own, financing a land and construction package, or undertaking a major renovation. For a house & land package, the land component is usually settled first as a separate drawdown, then construction drawdowns follow the progress payment schedule. For renovations, the same staged release applies, but the schedule is tailored to the scope of work rather than a standard home build.

As an example, an intensive care paramedic refinancing to fund a $180,000 renovation drew $60,000 at demolition and rough-in, $70,000 at lock-up and fixing, and the final $50,000 at completion. Each drawdown was inspected, and interest adjusted within days. The entire process took seven months, and total interest paid during construction was around $6,200, compared to $9,700 if the full $180,000 had been drawn upfront.

Fixed Price Contracts vs Cost Plus Contracts

Under a fixed price building contract, the builder quotes a total price and you both agree on a progress payment schedule upfront, usually tied to standard build stages. The lender releases funds according to that schedule once each stage is verified. Under a cost plus contract, the builder charges actual costs plus a margin, and drawdowns are based on invoices for materials and labour as the build progresses. Most lenders prefer fixed price contracts for construction finance because the loan amount and drawdown schedule are predictable.

Cost plus contracts require closer management and often trigger more frequent inspections, which increases the Progressive Drawing Fee total. For paramedics working 10-hour shifts and limited availability to manage builders and invoices, a fixed price building contract reduces the admin load and keeps drawdown timing predictable.

Owner Builder and Custom Design Builds

If you're acting as an owner builder, fewer lenders will approve progressive drawdown because the risk is higher without a licensed builder managing the project. Those that do usually require evidence of building experience, council approval, and detailed project plans before releasing funds. Drawdowns are linked to invoices from plumbers, electricians, and other sub-contractors, and inspections are more rigorous.

Custom design builds follow the same progressive drawdown process as project home builds, but the progress payment schedule may include additional stages if the design is complex or includes non-standard materials. The key difference is timeline: custom builds often take longer, which extends the period you're paying interest on drawn amounts. A paramedic building a custom design home with passive solar features and bushfire-rated materials paid interest-only for 14 months instead of the standard 8, adding roughly $8,000 to the total construction cost compared to the original estimate.

Switching from Construction to Permanent Loan

Once the build reaches practical completion and you receive your occupancy certificate, the loan converts from construction to a standard home loan with principal and interest repayments. This is called a construction to permanent loan. The conversion happens automatically with most lenders, though some require a formal revaluation and re-approval if the build took significantly longer than expected or if your employment or income changed during construction.

For NSW Ambulance employees, loan pre-approval before you commence building confirms how much you can borrow and locks in the structure, but the interest rate usually isn't locked during the construction phase unless you take out a fixed rate at conversion. At current variable rates, monthly repayments increase from interest-only to principal and interest, often by 40% to 60%, so budget for that jump before the build finishes.

Timing and Approval Conditions

Most construction loan approvals require you to commence building within a set period from the Disclosure Date, typically six to twelve months. If you don't start within that window, the approval lapses and you'll need to reapply. You'll also need council approval and a development application lodged or approved before the lender will settle the land component or release the first drawdown.

In one scenario, a flight paramedic had approval and purchased suitable land but waited five months for council plans to be finalised due to bushfire zone requirements. The build didn't start until month eight of the approval period, leaving only four months of contingency before the approval would have expired. The lesson: factor in council timelines before you lock in a build contract, particularly in regional NSW where approval processes can take longer.

Call one of our team or book an appointment at a time that works for you. We'll walk through your build timeline, confirm what your lender requires at each stage, and structure the drawdown schedule so you're only paying for what's been completed.

Frequently Asked Questions