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Sunset clauses: the one contract clause to read twice

By James Guilford, Development Manager, Heartland Developments ·

The sunset clause decides who can walk away from an off-the-plan contract and when. Here's what it does, the version that protects you, and the version that doesn't.

Ask a room of off-the-plan buyers what their sunset clause says and most will tell you it's the date the project has to be finished by. Close, but the miss matters. A sunset clause is really about one thing: who is allowed to cancel the contract, and when.

We write these clauses into our own contracts, so let me explain them the way I'd want them explained to me.

Sundown at the Durham Estate entrance

Sundown at Durham Estate. A sunset clause is about time running out, and whose clock it runs on.

What the clause actually does

An off-the-plan contract binds you to buy a home that doesn't exist yet. Builds run long for a hundred legitimate reasons, so the contract needs an escape hatch for the scenario where the project drags on indefinitely. That's the sunset clause: a long-stop date tied to a milestone, usually the new titles being issued or code compliance being granted. If the date passes and the milestone hasn't been met, the clause says the contract can be cancelled and the deposit refunded.

So far, so protective. The detail that changes everything is who holds the right to use it.

The question your lawyer should answer in one sentence

Who holds the cancellation right: you, the developer, or both?

A buyer-held right is what the clause is morally for. The project runs years late, your life has moved on, you get out with your deposit. Fair.

A developer-held right is a different creature. In a rising market, a developer holding the cancellation right can let the sunset date pass, cancel your contract, hand back your deposit, and resell the same home at the new, higher price. You carried years of waiting; they captured the upside. In New Zealand nothing in statute stops it, so the contract is the whole game. That is the risk worth naming: the protection you get here is the protection you negotiated, not one the law supplies afterwards.

Both-parties rights sit in between, and plenty of fair contracts use them. The test isn't the label, it's whether the developer could profit from their own delay.

What a fair sunset period looks like

There's no single right number, but there is a right logic. The period should cover the realistic build programme plus an honest margin for consenting, weather and the things construction genuinely throws up. For a standard apartment or terrace project, you'd expect the long-stop to land comfortably beyond the advertised completion date, but not absurdly beyond it.

Two smells worth noticing. A sunset date only barely past the promised completion suggests the developer wants an easy exit. A sunset date many years out, paired with a developer-held cancellation right, suggests you're being warehoused while they keep their options open.

Three questions to ask before you sign

Who can cancel, and under exactly what conditions. Whether the sunset period is realistic for this build, on this site, with this developer's track record. And what happens to your deposit and any interest on it if cancellation happens.

Your solicitor will read the whole contract, but ask them to answer these three in plain words. If any answer is fuzzy, treat it as a warning.

The honest developer's view

A well-drafted sunset clause protects both sides, and a developer confident in their delivery has no reason to hold a cancellation right they could exploit. When you're comparing projects, treat the sunset clause as a window into how the developer thinks about you. Some contracts read like a partnership. Some read like an option the developer holds over your deposit. The difference is visible on paper, before you've paid a dollar.

The deeper protection, as always, is the developer's history of actually finishing. A sunset clause is what you fall back on when delivery fails; a track record of seven completed, sold-out projects is what makes falling back unnecessary.


This is general information only. Have your own solicitor review any agreement before you sign. For the full picture of an off-the-plan purchase, see our buying off the plans guide. If you'd like to hear when Heartland opens registrations on a new project, register your interest.

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