Construction Finance
Do You Need A Fixed Price Contract?
5 min read- Finance Guide
- Updated 2026
Quick answer
Most standard lenders usually want a
1x signed fixed price contract
for standard residential construction loan approval
- Contract should include price and progress stages
- Draw approvals Usually staged
- Exceptions Owner builder or specialist policy
1300 421 044
1300 421 044
Detailed explanation
A fixed price contract matters because construction lending is not only about the borrower. The lender is also funding a building process that unfolds over months, usually through staged drawdowns. If the total contract price is unclear, the lender has less confidence that the approved facility will be enough to finish the build.
What the lender wants to see in the contract
A construction lender usually wants the signed agreement to line up with the full project documents
- 01Total contract sum
- 02Builder details
- 03Progress payment schedule
- 04Plans and specifications
- 05Permits and approvals
- 06Variation process
Why it helps:
Reduces uncertainty around total build cost- Makes progress payment approval easier
- Helps the valuation reflect the intended finished product
- Shows the lender how cost overruns may arise through variations
Why fixed price contracts matter for construction loans
They usually make the application cleaner because:
-
The contract states a defined build amount rather than open ended cost estimates
-
Progress payments can be matched to standard construction stages
-
The lender can assess whether the completed value supports the full facility
-
Variations become easier to identify as extra costs rather than hidden gaps
-
Registered builders with standard contracts generally fit mainstream lender policy better
How lenders usually view structures
-
Fixed price contract
Strongest fit
-
Cost plus or loose pricing
More scrutiny
-
Owner builder approach
Specialist policy
How approval works
Lenders review
signed fixed price building contract- builder credentials and licence
- plans specifications and permits
- full contract price and payment stages
- valuation based on completed improvements
- borrower income liabilities and servicing
- allowances for contingencies and variations
Typical policy position
-
Mainstream residential lender
Usually wants fixed price
-
Progress payments
Matched to contract stages
-
Owner builder loans
More restrictive
-
After completion
Loan usually reverts to standard terms
Need Help with your Project?
Common problems
A construction loan can become harder to approve when the contract does not clearly define cost, builder responsibility or payment stages.
Contract price is not truly fixed
Allowances, provisional sums or poorly defined variations can make the project cost less certain than it first appears.
Possible solutions include:
tighten the inclusions and specifications- reduce provisional sums where possible
- allow a contingency buffer outside the contract
- ask the builder to clarify the variation terms
Builder does not fit lender policy
Even with a fixed price contract, the lender may still reject the deal if the builder is not licensed, experienced or acceptable under policy.
Possible solutions include:
- provide licence and insurance evidence
- provide the builder's credentials and track record
- choose a lender with a more suitable builder policy
- change builder if necessary
Large variations after approval
Material design changes after approval can create funding gaps because the original valuation and contract no longer match the actual build.
Possible solutions include:
- keep variations controlled and documented
- fund upgrades from your own cash if needed
- check whether a revised valuation is required
- review the budget before construction starts
Steps to get Finance
Step
01
Choose the builder and finalise the plans and specifications
Step
02
Obtain a signed fixed price building contract with progress stages
Step
03
Submit the contract with plans permits and financial documents
Step
04
Lender assesses servicing builder policy and completed value
Step
05
Construction loan is approved and progress payments are set up
Step
06
Manage approved stages and keep variations under control until completion
Speak with a Property Finance Specialist
Construction finance can look straightforward on paper, but builder policy, contract structure and valuation detail often decide whether the deal moves smoothly or stalls.
A specialist can review the contract package and help identify which lenders may be more suitable for your build.
Speak with a finance specialist about your Property funding project
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