Construction Loan Cost Estimator

What will building it actually cost to fund?

A construction loan doesn't work like a normal mortgage. The lender pays the builder in stages, you pay interest only on the money drawn so far, then the whole thing converts to a standard principal-and-interest loan once you've moved in. This estimator walks through all three: total project cost, the indicative loan and LVR, the staged interest build-up across slab, frame, lockup, fixing and completion, then your ongoing repayment.

This is general information only and an indicative estimate. Not credit assistance, a loan offer, or a quote. Figures are estimates and may differ from a lender's assessment.

Your project

Do you already own the land?

Land value (your equity in it)

Build contract cost

Contingency (buffer on the build)

Please enter a build cost to continue.

Total project cost

Indicative loan · LVR

Your construction loan, end to end

1 · Total project cost

2 · Indicative loan and LVR

3 · Progressive-drawdown interest during construction

Stage	Drawn this stage	Cumulative drawn	Months held	Interest
Total interest during construction				$0

4 · Repayment once it converts to a standard loan

Loan amount at conversion$0
Ongoing rate (P&I)0%
Loan term0 years
Monthly repayment (P&I)$0

See your full construction loan breakdown

Enter your details to unlock the staged interest build-up, the conversion repayment and a downloadable summary. We'll send you our guide, Construction finance 101, too.

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Rates and figures current as at 3 June 2026. Verify with a lender before relying on this estimate.

Important information

This is general information only and an indicative estimate, not credit assistance, a loan offer, or a quote. Figures are estimates and may differ from a lender's assessment. Consider your circumstances and seek advice before acting.

Construction lending varies between lenders. Progress-payment schedules, interest treatment during construction, valuation methods (some lenders cap the loan against the land plus the fixed build contract, others against the completed "on completion" valuation), and the rate you ultimately receive all differ. The stage drawdown percentages and rates used here are typical defaults, not a particular lender's terms. Rates and figures are current as at 3 June 2026 and you should verify them with a lender before relying on this estimate.

LenderBridge is pursuing its credit licence pathway. Nothing here is, or should be taken as, licensed credit assistance.