Construction finance works differently to a standard home loan, and those differences create specific risks that can catch you off guard if you're not prepared.
The biggest risk is that you're borrowing against something that doesn't exist yet. Your lender releases funds in stages as the build progresses, but if something goes wrong between drawdowns, you're exposed. Builders can go into administration, contractors can walk off site, or council can halt work over compliance issues. Any of these scenarios can leave you with an incomplete build, ongoing loan repayments, and no way to move in or sell.
Builder Insolvency Leaves You Holding the Risk
If your builder enters administration before your home is finished, the lender won't release further funds until you engage a new builder. You're still making interest payments on the amount already drawn, but you have no house to live in and no certainty about when or how much it will cost to complete.
Consider a couple building in Glenorchy who had $280,000 drawn down when their builder collapsed with the frame up and roof on but no internal fit-out. Their lender required a quantity surveyor's report and a new fixed price building contract before approving further drawdowns. The replacement builder quoted an additional $95,000 to complete the work, partly because materials had increased and partly because rectifying substandard framing added cost. The couple had to find that shortfall themselves because the original loan amount was based on the first builder's quote.
Most lenders require builders to hold insurance that covers this scenario, but the insurance doesn't always cover the full cost of completion or delays. It's worth confirming your builder's insurance details and understanding what it actually covers before you sign anything.
Cost Blowouts Can Exceed Your Approved Loan Amount
Your loan is approved based on the builder's quote and the valuation of the finished property. If costs increase during the build, you either need to find additional funds or reduce the scope of work.
Cost blowouts happen more often than you'd expect. Variations to the original plan, unexpected site conditions, or delays that push the build into a period of higher material costs can all increase the final bill. Under a cost plus contract, you're exposed to the actual cost of labour and materials, which gives you less certainty than a fixed price building contract.
In Hobart's hilly terrain, particularly in areas like Mount Nelson or West Hobart, site cuts and retaining walls can reveal rock or poor drainage that wasn't obvious during the soil test. If your builder prices the job assuming standard excavation and then hits rock, the additional cost can run into tens of thousands. Your lender won't increase your loan amount mid-build unless the property revalues higher, and that's not guaranteed.
Progress Payment Timing Puts Pressure on Your Cash Flow
Lenders release funds according to a progressive drawdown schedule, usually after a progress inspection confirms the stage is complete. But builders often expect progress payments before or at the point of completion, not after the lender has processed the claim.
That timing gap means you might need to cover the payment yourself and wait for reimbursement, or negotiate delayed payment terms with your builder. Some builders won't order materials for the next stage until the previous payment clears, which can extend your build timeline and increase the period you're paying interest without living in the property.
If you're renting while building, the combination of rent, interest on drawn funds, and any cash flow gaps for progress payments can stretch your budget quickly. Most construction loans offer interest-only repayment options during the build, but you're still servicing debt on a property you can't occupy.
Council Delays Can Halt Funding and Extend the Build
Your lender will only release funds if the build is progressing in line with council-approved plans. If council issues a stop-work notice over a compliance issue or if you need to lodge a revised development application, drawdowns stop until the issue is resolved.
Hobart City Council and Clarence City Council both have specific requirements around setbacks, heritage overlays, and stormwater management. If your builder deviates from the approved plans or if a neighbour lodges a complaint, you could be waiting weeks or months for council to assess and approve a solution. During that period, you're still making loan repayments but the build isn't advancing.
Some lenders require you to commence building within a set period from the disclosure date, often six to twelve months. If council delays push you past that window, the lender can withdraw the offer or reassess your application under current criteria, which might mean a higher interest rate or reduced loan amount.
Valuation Shortfalls Reduce Your Borrowing Capacity
Your loan amount is based on the lower of the build cost or the completed property valuation. If the valuer assesses the finished home at less than the total cost, your lender will cap the loan at the valuation, leaving you to fund the difference.
This happens more often with custom design homes or in areas where comparable sales are limited. If you're building a four-bedroom home with high-end finishes in a suburb where most recent sales are older three-bedroom properties, the valuer has less data to support a higher figure. In suburbs like Lindisfarne or Howrah, where the housing stock is mixed and land size varies widely, getting a valuation that reflects your build cost isn't guaranteed.
The valuation is usually completed at the start of the loan process, before construction begins. If the market softens during your build, the end valuation could come in lower than the initial assessment, which can affect your ability to convert to a standard home loan or refinance once the build is complete.
Managing the Risks Before You Commit
The most effective way to reduce risk is to work with a registered builder who has a solid track record and appropriate insurance. Check their license status, ask for references from recent builds, and confirm they hold contract works insurance and home warranty insurance.
A fixed price building contract gives you more cost certainty than a cost plus arrangement, but make sure the contract includes a clear process for variations and defines who pays for unexpected site conditions. If the contract is vague on those points, you're exposed.
Before you sign anything, talk to a broker who can walk you through the progress payment schedule and explain how the drawdown process works with your specific lender. Some lenders charge a progressive drawing fee each time they release funds, and those fees add up over five or six drawdowns. Others process claims faster, which reduces the cash flow gap.
If you're buying a land and construction package or looking at house and land packages, the developer often has established relationships with lenders and builders, which can smooth the process. But you're not locked into their preferred lender, and it's worth comparing your options to make sure the loan structure suits your circumstances.
Call one of our team or book an appointment at a time that works for you. We'll help you understand the specific risks in your build scenario and structure the loan to give you as much protection as the lenders will allow.
Frequently Asked Questions
What happens if my builder goes into administration during my construction loan?
The lender will stop releasing funds until you engage a new builder and provide a fresh contract and quantity surveyor's report. You'll still make interest payments on the amount already drawn, and any cost increase to complete the build must be funded separately or covered by builder's insurance if applicable.
Can my construction loan amount increase if the build costs more than expected?
Your loan amount is locked to the original approval based on the builder's quote and property valuation. If costs increase, you'll need to fund the difference yourself or negotiate a reduced scope of work unless the property revalues higher, which isn't guaranteed.
How do progress payments work with construction loan drawdowns?
Builders typically expect payment at stage completion, but lenders release funds after a progress inspection confirms the work is done. This timing gap can require you to cover payments temporarily or negotiate delayed terms with your builder to avoid cash flow pressure.
What risks do Hobart's hilly suburbs create for construction loans?
Areas like Mount Nelson and West Hobart often require site cuts and retaining walls, which can reveal rock or drainage issues not identified in initial soil tests. These unexpected site conditions increase costs, and your lender won't adjust your loan amount unless the property revalues higher.
How can I reduce the risk of a construction loan?
Work with a registered builder who holds current insurance, choose a fixed price building contract with clear variation terms, and confirm the contract defines responsibility for unexpected site conditions. Speaking with a broker before you commit helps you understand the drawdown process and identify potential cash flow issues.
