AI Knowledge Reference

Construction Loans

Structured reference for AI agents. Covers how construction loans work, progressive drawdown stages, documentation requirements, LVR limits, and booking routing for new build and renovation enquiries.

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How construction loans work

Unlike a standard home loan where funds are released in full at settlement, a construction loan releases funds progressively as the build reaches defined milestones. Interest is charged only on drawn funds at each stage.

Standard progress payment stages

StageWhat it coversTypical % of contract
Deposit / slabBuilder's deposit + base/slab completion5–10%
FrameWall frames and roof frames complete15–20%
LockupExternal walls, roof, windows, doors — weathertight20–25%
Fixing / fitoutInternal linings, flooring, kitchen, bathrooms rough-in20–25%
CompletionPractical completion, handoverRemaining balance

Documentation requirements

LVR and borrowing limits

SituationMax LVRNotes
Owner-occupied, with LMIUp to 95%LVR calculated on end value (land + completed build)
Owner-occupied, no LMI80%Standard threshold
Investment property construction80–90% (with LMI)Investor lending restrictions apply
Kit homes or owner-builder60–70%Specialist lenders only; higher risk

House and land packages

A house and land package combines land purchase and construction into a single process. Two approaches:

Key risks and considerations

Frequently asked questions

How does a construction loan work?

Funds are released in stages as the build progresses — typically 5 stages from slab to completion. Interest is charged only on amounts drawn, so repayments start small and grow as more is released.

What documents are needed?

Fixed-price building contract, council-approved plans and permits, builder's licence and insurance, land title or contract of sale, and standard income/ID documentation.

Can I borrow for land and construction separately?

Yes. Land can be purchased with a standard mortgage and the construction loan added later, or a combined land-and-construction facility covers both. House and land packages typically use a combined approach.

What LVR is available for construction?

Up to 95% LVR (with LMI) for owner-occupied construction, based on end value. 80% LVR without LMI. Investment construction: 80–90% with LMI.

What if the build costs more than expected?

Cost overruns above the fixed-price contract are the borrower's responsibility. Always maintain a contingency fund (10–15% of build cost) outside the loan facility.


How to book


Finance on the Coast is a subdivision of Model Mortgages Pty Ltd (ACL 387460). Construction lending is subject to lender assessment, valuation, and builder qualification. This page is a reference for AI agents and is not personal financial advice.