Cost-to-Complete Finance: How to Calculate the Real Funding Gap on an Incomplete Development
The remaining builder quote is not the same as the finance requirement. A credible cost-to-complete calculation must reconcile existing debt, unpaid claims, remaining works, professional costs, interest, contingency and the cash actually available to the project.
Commercial and business-purpose finance only. All scenarios are subject to lender assessment, valuation, due diligence and an acceptable exit.
A development can appear close to completion and still have a substantial funding gap. The calculation must move beyond visible building work and identify every amount required to refinance, restart, complete, certify and exit the project.
What does “cost to complete” mean in development finance?
Cost to complete is the current estimate of all expenditure needed to take a development from its present condition to the agreed completion point. Depending on the project, that point may be practical completion, occupancy approval, subdivision registration, settlement of presales, refinance or another clearly defined milestone.
The figure is not simply the unpaid portion of the original building contract. Once a project has experienced delays, variations, disputes or a funding shortfall, the original budget may no longer describe the real position. The revised calculation should account for work performed, work remaining, unpaid claims, contractual changes, holding costs and the capital needed to execute the repayment exit.
Start with sources and uses—not a headline loan amount
A practical calculation separates the project’s uses of funds from confirmed sources of funds.
Potential uses of funds
- refinance or payout of existing secured debt;
- builder, subcontractor and supplier arrears that must be resolved;
- remaining construction and rectification work;
- consultant, authority, certification and legal costs;
- valuation, quantity-surveyor and lender costs;
- interest and facility costs during the completion and exit period;
- rates, insurance, security, utilities and other holding costs;
- GST or other project taxes where applicable; and
- a justified contingency for remaining project risk.
Confirmed sources of funds
- undrawn funds that remain legally and practically available;
- cash equity the borrower can contribute as cleared funds;
- verified sale or presale proceeds available at the required time;
- approved grants, rebates or other project receipts where applicable; and
- proceeds from the proposed replacement or supplementary facility.
Funding gap = total verified uses − confirmed available sources.
The result should be tested as both a gross facility requirement and a net usable-funds requirement. A loan that capitalises interest and costs may have a headline amount materially higher than the cash released for construction. The related guide to headline LVR versus net usable funds explains why the distinction matters.
Seven cost categories that are often underestimated
1. Unpaid historical claims
Past builder, subcontractor or supplier claims may need to be settled before the site can restart. The calculation should identify disputed and undisputed amounts separately rather than assume they will disappear.
2. Variations and rectification
Design changes, latent conditions and defective work can alter the remaining scope. Updated pricing should show whether each variation is approved, provisional or still contested.
3. Professional and authority costs
Architects, engineers, surveyors, certifiers, project managers, utility providers and authorities may have outstanding or future fees required to reach completion.
4. Finance and transaction costs
Interest, valuation, quantity-surveyor, legal and lender costs may be paid upfront, progressively or retained from the facility. Their treatment changes net construction funds.
5. Holding costs
Rates, land tax where applicable, insurance, security, utilities, site establishment and asset-protection costs can continue while works and sales are completed.
6. Completion and exit costs
Marketing, sales commissions, leasing incentives, settlement costs, discharge expenses or refinance costs may be necessary before the facility can be repaid.
7. Contingency
The allowance should reflect the project stage, quality of documentation, fixed and provisional pricing, defects, builder arrangements and remaining program risk. It should be explained rather than inserted as an arbitrary percentage.
Australian Government construction-industry guidance identifies rising material and labour costs, delays, payment disputes and cash-flow pressures as common risks. A current budget and cash-flow forecast help turn these risks into assessable line items.
How a lender may verify the cost-to-complete figure
A lender may ask a quantity surveyor, valuer, building consultant or other appropriately qualified adviser to review progress and remaining expenditure. The review can compare the physical condition of the site with approved plans, contracts, variations, invoices, earlier drawdowns and the updated construction program.
The credit assessment may also distinguish:
- original budget versus current revised budget;
- costs incurred versus costs actually paid;
- completed work versus work claimed;
- fixed-price items versus provisional or unpriced items;
- remaining construction cost versus total project cost to exit;
- as-is value versus value on completion;
- gross facility amount versus net funds available to the project; and
- base-case exit versus a slower or lower-value downside case.
Independent verification does not eliminate risk, but it gives the lender and borrower a common basis for deciding whether the project is adequately funded. ASIC’s current work on private credit has also emphasised the importance of current valuations and realistic assumptions in real-asset-backed lending.
How cost-to-complete finance may be structured
The proposed facility may need to refinance the existing lender, provide additional construction capital or do both. Depending on security, consents and lender criteria, possible approaches include a replacement first mortgage, a consented second-ranking facility, additional property security or a staged construction-completion facility.
Drawdowns may be controlled through progress reports, approved invoices, quantity-surveyor certification, direct payments or agreed milestones. A lender may retain interest, contingency or particular cost allowances rather than release the entire facility at settlement.
After completion, unsold dwellings or lots may potentially transition to residual stock finance, subject to valuation, sales evidence, servicing and lender assessment.
Calculating the funding gap on a partially complete project
Situation: A company owns a partially completed townhouse development. The original facility has expired, and the project requires revised funding to finish construction and execute a sale-based exit.
Illustrative uses: $2.40 million to refinance existing secured debt; $1.05 million for verified remaining construction and rectification; $180,000 for professional, authority and holding costs; $220,000 for interest and facility costs; and $150,000 contingency. Total illustrative uses are $4.00 million.
Illustrative sources: The borrower can contribute $300,000 of verified cash equity. No further amount is assumed from the original lender. The gross replacement-facility requirement is therefore $3.70 million before testing how lender costs and retained interest affect net usable funds.
Assessment: A lender would still need to test the as-is and on-completion values, security position, builder and contract, quantity-surveyor report, timing, borrower position and sale or refinance exit. If the facility cannot provide the required net funds within lender criteria, the borrower may need additional equity, extra security, scope changes or another solution.
This numerical example is hypothetical and simplified. It is not a completed client transaction, quoted loan structure or indication of approval.
Information needed for a cost-to-complete review
- current title, ownership and all registered or unregistered security;
- existing facility documents and up-to-date payout figures;
- original and revised development budgets;
- detailed cost-to-complete report and progress assessment;
- building contract, variations, claims and payment schedule;
- approved plans, permits, certifications and consultant reports;
- builder details, licence, insurance and updated construction program;
- schedule of unpaid creditors and disputed claims;
- current valuation and any relevant earlier valuation;
- presales, sales evidence, leasing information or refinance proposal;
- borrower cash contribution and evidence of its availability; and
- a clear explanation of the shortfall, corrective action and repayment exit.
The broader commercial property finance documents checklist covers additional borrower and settlement information.
Common mistakes in the funding-gap calculation
- Starting with the desired loan amount. Build the sources-and-uses schedule first, then determine the facility requirement.
- Counting uncertain funds as confirmed. A proposed presale, contribution or refinance should not be treated as available until its conditions and timing are understood.
- Ignoring retained interest and fees. These can reduce the amount released for physical works.
- Using an old progress estimate. Site condition, claims and prices may have changed since the last report.
- Stopping the budget at practical completion. Certification, sales, settlement and refinance costs may still need funding.
- Leaving contingency unexplained. The allowance should be connected to identifiable project risks.
Cost-to-complete finance questions
Is cost to complete the same as the remaining building-contract balance?
No. The complete calculation may also include arrears, variations, rectification, consultant and authority fees, holding costs, finance costs, contingency and expenses required to execute the exit.
Who prepares a cost-to-complete report?
Requirements vary. A lender may require a quantity surveyor, building consultant, valuer or another suitably qualified professional to inspect the project and report in an acceptable format.
Can cost-to-complete finance refinance the existing lender?
Potentially. A facility may combine an existing-debt payout with additional completion funding, subject to valuation, security, documentation, lender criteria and the repayment exit.
Can interest and fees be included in the facility?
Some commercial facilities may capitalise or retain interest and costs. These amounts form part of the gross facility and reduce the net funds available for construction.
What happens if the verified cost exceeds the available loan?
The proposal may require additional borrower equity, extra security, revised scope, creditor arrangements or another funding structure. A lender will not assume an unexplained shortfall will resolve itself.
Why is the exit included in the cost-to-complete calculation?
The loan must be repaid after works finish. The budget and facility term should allow for certification, sales, settlement or refinance rather than ending at the final construction invoice.
Official resources
Need to quantify and fund a development shortfall?
Basic Finance Loans can review the existing debt, revised budget, cost-to-complete evidence, security and exit to identify potential commercial finance pathways.
Commercial and business-purpose finance only. Information is general and does not constitute legal, tax or financial advice. Finance is subject to assessment, valuation, lender criteria, documentation and acceptable security and exit. Seek independent professional advice for your circumstances.