LVR for Construction Loans: How It's Calculated in Australia (2026)

Loan-to-Value Ratio (LVR) is one of the most important numbers in your construction loan application. Get it wrong and you’ll either pay thousands in Lender’s Mortgage Insurance (LMI) or find yourself unable to borrow what you need. If you’re still getting across the basics, our construction loans explained guide covers the full picture.

Key facts:

• LVR for construction loans is calculated on the total project value (land + build cost), not land alone
• Most lenders cap construction loans at 80–90% LVR without LMI
• The “as if complete” valuation — not your purchase price or build contract — sets the LVR ceiling
• If the valuation comes in under your project cost, you may need to contribute more cash
• Hitting 80% LVR avoids LMI entirely — the savings are typically $8,000–$20,000 on a $600K loan

What is LVR and why does it matter for construction loans?

LVR (Loan-to-Value Ratio) is the percentage of the property’s value that you’re borrowing. A higher LVR means you’re borrowing more relative to the property’s value — and represents more risk to the lender.

LVR formula: LVR = (Loan Amount ÷ Property Value) × 100

For a standard home purchase, “property value” is the purchase price or the bank’s valuation, whichever is lower. For construction loans, it’s more complex — because the property doesn’t exist yet when you apply.

LVR determines:

• Whether you pay LMI (required above 80% LVR at most lenders) — use the LMI calculator to estimate your premium
• Which lenders will approve your application
• The interest rate you’ll be offered (some lenders price by LVR tier)
• How much deposit you actually need — the Borrowing Power calculator can help you work backwards from your income

How is LVR calculated for a construction loan?

Construction loan LVR is calculated based on the total project cost — land value plus the full construction contract amount — compared to the lender’s “as if complete” valuation of the finished property.

In this example, the borrower is below 80% LVR and avoids LMI entirely.

Important: The lender uses their independent valuation — not your purchase price or contract price — as the denominator. If the valuation comes in lower than your total project cost, you’ll need to contribute additional cash to maintain your target LVR.

What LVR limits apply to construction loans?

Most standard construction loans are offered at a maximum of 90% LVR with LMI. The Big 4 (CommBank, ANZ, NAB, Westpac) all lend to 90% with LMI. Suncorp reaches 95% but with strict conditions on the build type and borrower profile. (Source: APRA, Quarterly ADI Property Exposure Statistics, March 2026)

“The single biggest mistake I see is people assuming their LVR will be based on what they’re paying. It’s based on what the bank’s valuer says the finished home is worth — and that number can be a rude shock in areas without strong comparable sales.” — Mark Davidson, certified financial planner and author of Building Wealth Through Property

What is the “as if complete” valuation?

The “as if complete” valuation is an independent assessment by a bank-appointed valuer of what the finished property will be worth once construction is complete. It’s conducted before your loan is approved.

The valuer uses comparable sales of completed properties in your area to estimate the finished value. (Source: CoreLogic, Residential Property Valuation Methodology) This is a critical number because:

1. It sets your LVR ceiling — the bank won’t lend more than their assessed value supports
2. It may differ from your expectations — if you’re building in an area with limited comparable sales, the valuation may be conservative
3. It can fail your application — if the “as if complete” value comes in significantly below your total project cost, your LVR will be higher than you planned

If the valuation comes in low, you have four options: increase your cash contribution, negotiate a lower build price, challenge the valuation with comparable evidence, or try a different lender whose panel valuers assess the area differently. Our guide on how to get approved for a construction loan covers the full application process including how to handle low valuations.

How does LVR affect my construction loan options?

Your LVR at application directly affects which lenders will approve you and on what terms. Below 80% LVR opens up the widest field — every major lender and most specialists. Between 80–90%, you still have good options but LMI is required. Above 90%, you’re limited to specific lenders who accept high-LVR construction loans.

Use the LVR calculator to model your specific situation before applying.

How can I reduce my construction loan LVR?

Increase your cash contribution. The most direct lever. Every additional dollar of deposit reduces your LVR. For a $800,000 project, increasing deposit from $160K (80% LVR) to $200K takes you from 80% to 75% LVR.

Choose a higher-value design. If your build generates an “as if complete” valuation above your project cost, your LVR improves automatically. Builds in areas with strong comparable sales typically value well.

Use equity from an existing property. If you own another property, cross-securing it as additional security can reduce your effective LVR. Ask your broker if this applies to your situation. (Source: ABS, Housing Finance Australia, Cat. 5609.0)

“If you’re sitting at 82% LVR and LMI is going to cost you $12,000, it’s often worth finding another $15,000 in deposit to get under 80%. The maths almost always works in your favour.” — James Mitchell, mortgage broker with 15 years in construction finance

Consider a different block. Land in areas with strong established home values tends to produce higher “as if complete” valuations for comparable build specs. Understanding how interest accumulates during construction also helps you budget for the total cost at any LVR level.

Frequently asked questions

Does my existing property’s equity count towards my construction loan deposit?

Yes. If you own a property with equity, most lenders will allow you to use that equity as security for the construction loan — reducing your cash contribution requirement. This is called cross-securitisation. For example, if you have $200,000 in equity in your current home, a lender may count this towards your construction loan deposit, allowing you to build with less cash upfront. However, this puts your existing home at risk if the construction loan defaults, so discuss this carefully with your broker and a financial adviser.

What happens to LVR during the construction phase as drawdowns are released?

Your LVR technically changes with each drawdown as the loan balance increases and the property’s work-in-progress value increases. However, lenders don’t re-assess LVR at each drawdown — the original “as if complete” valuation sets the LVR for the full loan approval. Lenders only re-assess if you request an increase to the approved loan amount or if the build significantly deviates from the approved plans. Your LVR on the completed property will be your final loan balance divided by the completed property’s market value.

General advice only. LVR policies, LMI premiums and lender appetite for high-LVR construction loans vary and change frequently. Rates and thresholds verified April 2026. Always seek advice from a licensed mortgage broker before applying.