Insights

Buying Off-The-Plan in NZ: The Timeline, Turnkey Mortgages, Sunset Clauses, and Hidden Risks

A New Zealand couple reviewing architectural renders and floor plans for a multi-unit turnkey townhouse development at their dining table

A quick heads-up: The information in this article is designed as a general educational guide only and does not constitute personalised financial, tax, or legal advice. Because everyone's situation is unique (and bank policies change frequently), we recommend speaking with a licensed Financial Adviser to see how this applies to your specific circumstances. For full transparency on our terms of service, how we are remunerated by lenders, and any specific situations where a fee may apply, please read How We Get Paid.

Buying a home that has not been built yet requires a completely different mindset from buying an existing property.

Instead of inspecting established walls and walking through open homes, you are reviewing floor plans, looking at 3D renders, and reviewing specifications for a patch of dirt. In return, you get exemptions from standard Reserve Bank loan-to-value ratio (LVR) restrictions—meaning you can often purchase with a 10% deposit—alongside the benefits of a modern, energy-efficient home.

In New Zealand, the majority of off-the-plan purchases are sold as 'turnkey' packages. The name describes the concept exactly: you pay an initial deposit when the contract is signed, and you do not make another payment or draw down your mortgage until the house is finished, Code Compliance is issued, and you turn the key in the front door.

However, depending on the scale of the development, the gap between signing the contract and moving in can stretch from six months to two years. Navigating that build window safely requires understanding exactly how the timeline works.

The turnkey journey: step-by-step

Whether your build takes nine months or eighteen months, a standard turnkey purchase generally follows the strict sequence below.

Read through the timeline to understand how your deposit, bank valuation, and final settlement all connect.

The Turnkey Timeline

The exact process from signing the contract to the maintenance period.

Step 1

Pre-Approval & The Contract

We secure your initial bank pre-approval. You find an off-the-plan property you love and sign the Sale and Purchase Agreement (SPA), ensuring your solicitor reviews it thoroughly before it goes unconditional.

Step 2

KiwiSaver Withdrawal, Valuation & 10% Deposit

The bank usually requires a Registered Valuation based on the builder's plans. If you are using KiwiSaver for your deposit, your solicitor must initiate the withdrawal paperwork now. This confirms the property is worth what you are paying for it. Once the finance is approved, and your solicitor agrees, you pay your deposit (usually 10%) as per your solicitor's instructions.

HLF Recommendation

If your build is likely to settle in the next 12 months, order your valuation at this stage. We have seen firsthand what happens when this goes wrong. A client came to us late in the process having purchased a turnkey home for $1,070,000. Just a month before settling, the valuation came back at $820,000!

The bank would only lend against the $820,000 value, ignoring the agreed purchase price. At this stage, they were legally locked in, liable for the full $1.07M, and it got very messy. A valuation received earlier, or a cleverly worded solicitor's registered valuation clause, would have saved this client a lot of stress and worry.

Had this happened before the client went unconditional, there may also have been the option to renegotiate the price based on a lower registered valuation than expected, or back out of the contract completely, depending on the specifics of the contract.

Step 3

The Build Phase (Months to Years)

The developer builds the house. This could take three months, or it could take two years. Bank pre-approvals initially only last 60 to 90 days, but once we get to the stage where we're only waiting on council code of compliance, this can usually be extended out to 12 months. If the build is expected to take more than 12 months, we will work with you on how best to manage the process.

Step 4

The Sunset Clause

If the build faces massive delays and hits the "Sunset Date" written in your contract, usually 2-3 years from signing the contract, a legal trigger occurs. Depending on your contract, you may now have the legal right to cancel the agreement, get your 10% deposit back in full, and walk away.

Crucial Note: This clause is very much worth reading through with your solicitor, as in some cases, the builder also has the right to cancel the contract, repay your deposit and sell the house to someone else!

Step 5

The Completion Certificate

As the house nears completion, the same valuer will revisit the now finished home. Unlike the first valuation, as it has not been more than 12 months since the original valuation, they are not deciding what the house is worth again. They are simply issuing a "Completion Certificate" to confirm the builder actually built what was on the original plans, thereby confirming that the original valuation was correct.

HLF Recommendation Get an independent builder's report done at this stage. We have seen new builds, signed off by the council, that have been condemned only 18 months to 2 years later. An independent inspection can save years of legal wrangling for around $600.

Step 6

CCC Issued, House Insurance & Fixing Rates

The local council issues the Code Compliance Certificate (CCC), proving the house is legally safe to live in. This is the critical moment: most banks will not let you officially lock in your fixed interest rate until the CCC or certificate of practical completion is issued, which means there is some risk when taking on a turnkey property that rates may have gone up before you settle. You must also arrange House Insurance now. The bank will not settle the loan without proof the property is insured.

Step 7

Settlement Day

The bank transfers the remaining 90% of the funds, your 10% deposit is released, and you get the keys. Your mortgage payments officially begin. Welcome to your new home!

Step 8

The Snag List & Maintenance Period

After you move in, the New Zealand Building Act guarantees a 12-month defect repair period. You will create a "snag list" of issues (such as sticky doors, peeling paint, or faulty seals) for the developer to fix at their own expense.

How bank valuations work on off-the-plan builds

As highlighted in the timeline, one of the most common sources of anxiety for turnkey buyers is the valuation process.

When you first apply for lending, the bank assesses the property using an upfront Registered Valuation based entirely on the developer's plans and specifications.

KEY INSIGHT: THE "COMPLETION INSPECTION" BUFFER When construction finally finishes, the bank sends the valuer back to the property. If the build has completed within the bank's standard policy window (typically 6 to 12 months, depending on the lender), the valuer does not usually complete a brand-new market appraisal.

Instead, they complete a "completion inspection" to confirm that the dwelling has been built to the exact specifications agreed upon. As long as it was built to spec, the original valuation remains the benchmark for your lending—protecting you from short-term market dips.

The danger zone: delays and valuation shortfalls

The primary financial risk in an off-the-plan purchase occurs when construction encounters significant delays.

Because registered valuations generally expire after 6 to 12 months, a build that takes 18 months will force the bank to order a completely fresh market valuation right before settlement.

WARNING: HOW BUILD DELAYS CAN TRIGGER A CASH SHORTFALL If the property market has dropped during an 18-month wait, the valuer might determine the house is now worth less than the contract price you signed. Because banks calculate their maximum lending against the lower of the purchase price or the current valuation, a lower valuation creates a funding shortfall.

In this scenario, you are legally obligated to cover that missing cash out of your own pocket to settle the purchase, or risk being pursued by the developer for breach of contract. This is why having an experienced mortgage adviser is vital—we track your valuation expiry dates and work with you early to manage the risks if a build starts to drag on.

Managing the other deep-dive risks

Alongside valuations, three other areas require strict oversight to protect your deposit and your finance during an off-the-plan build.

1. Bank approvals do not last forever

Bank credit approvals do not sit open indefinitely. If your build timeline blows out, the lender will require your financial position to be updated and re-verified before settlement.

KEY INSIGHT: KEEP YOUR FINANCES STEADY UNTIL SETTLEMENT DAY If your household income has changed, if you have taken on new personal debt (such as a vehicle loan or credit card), or if the bank's test interest rates have shifted upward during the build, your borrowing capacity could be reduced when the approval is renewed.

Always speak with us before making any job or financial changes while your home is being built—we manage your bank renewals behind the scenes to keep your approval secure right through to settlement.

2. Using KiwiSaver safely

If you are using a KiwiSaver first-home withdrawal to fund your 10% deposit, timing and structure are everything.

KiwiSaver scheme providers generally require 10 to 15 working days to process withdrawal documentation. More importantly, under KiwiSaver regulations and standard legal practice, your funds must be paid into a solicitor's trust account and held by a stakeholder until settlement.

The funds should never be released directly into the developer's operating account prior to completion. This legal safeguard ensures your deposit remains fully protected if the development company fails to complete the build.

3. Reviewing the sunset clause

When purchasing a property that has not yet been built, you need a contractual deadline to ensure you are not left waiting indefinitely if a project stalls. This mechanism is known as a sunset clause.

PRO TIP: MAKE SURE THE SUNSET CLAUSE PROTECTS YOU, NOT JUST THE DEVELOPER Your property solicitor or conveyancer should review the wording of the sunset clause carefully before you go unconditional.

Crucially, the right to cancel should sit with you as the purchaser (or be mutually agreed), so you are never exposed to a developer intentionally delaying a project to cancel your contract and resell the finished home at a higher price.

Structuring your off-the-plan finance safely

Purchasing off the plans can be a highly effective way to enter the housing market with modern design standards, lower maintenance, and a smaller deposit. However, managing contract milestones, valuation updates, and bank renewals requires clear oversight.

At Home Loan Factory, we help buyers structure off-the-plan finance from initial contract review right through to final settlement day, ensuring your deposit is protected and your bank approvals stay secure throughout the entire build.

Considering an off-the-plan or turnkey purchase? Book a free strategy session with a Home Loan Factory adviser to review your lending options today.

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Frequently asked questions

What is a turnkey property purchase?

A turnkey property is a new-build home purchased off the plans where you pay a deposit upfront and make no further payments until the home is fully finished, Code Compliance is issued, and you take possession.

Can I get an off-the-plan mortgage with a 10% deposit?

Yes. Under Reserve Bank of New Zealand lending regulations, new residential construction is exempt from standard investor and owner-occupier LVR restrictions. Most mainstream banks will accept a 10% deposit for turnkey new builds, subject to standard credit and affordability criteria.

What happens if the property market drops while my turnkey home is being built?

If construction finishes within the bank's standard valuation validity period (usually 6 to 12 months), lenders typically rely on a completion certificate confirming the home matches the original plans. However, if the build suffers significant delays, the bank may order a new valuation. If that valuation is lower than the purchase price, you may need to cover the difference in cash.

Can I use KiwiSaver for my turnkey deposit?

Yes. KiwiSaver first-home withdrawal funds can be used toward the initial deposit. Your solicitor must handle the withdrawal process, and the funds must be held in a solicitor's trust account rather than released directly to the developer's operational account.

What is the purpose of a sunset clause in a building contract?

A sunset clause establishes a contractual deadline by which the developer must complete the build and secure title. Its primary purpose is to protect you from open-ended project delays by allowing you to cancel the agreement and get your deposit back.

However, you must be careful: some contracts also give the developer the right to cancel. In a rising property market, there is a risk that a vendor could intentionally delay the build to trigger the sunset clause, cancel your contract, and resell the finished house to someone else for a higher price. This is why it is critical to have your property solicitor review the clause to ensure the right of cancellation sits squarely with you, the purchaser.

Author

Andrew Palliser

Wellington Based Mortgage & KiwiSaver Adviser

A solo New Zealand man thoughtfully reviewing his budget on a laptop at a home desk

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