The OTP decoded: six elements every seller and buyer must know

Safeda and AssociatesConveyancing attorneys, Bryanston5 min read

The short answer

An offer to purchase becomes a binding sale agreement the moment both parties sign it, and neither side can then walk away without facing penalties. Six things decide whether it protects you: it must be signed in wet ink, it must name the parties, property, price and possession, and it must be clear about suspensive conditions, the 72 hour clause, the voetstoots clause and which fixtures and fittings are included.
Contents

The power of wet ink

Buying or selling a home is one of the largest financial decisions most people make, and in South Africa that transaction begins with a single document: the offer to purchase.

Once both the buyer and the seller have signed, the document stops being paperwork and becomes a legally binding contract of sale. Neither party can simply withdraw without facing penalties.

The Alienation of Land Act governs property sales in South Africa. It requires that every agreement for the sale of land be in writing and signed by both parties.

Property transactions also require wet ink signatures. Unlike many modern contracts, an offer to purchase cannot be validly signed electronically. If the seller is a company or a trust, check that the person signing has documented authority to do so, such as a formal resolution.

The four Ps of a valid offer

For an offer to purchase to be enforceable it must clearly define four things.

  • Parties. Full names and ID numbers of the buyer and the seller, their legal capacities, physical addresses and contact details.
  • Property. A clear description of the property, normally matching the details in the title deed.
  • Price. The agreed price, any deposit required, and whether the price includes VAT.
  • Possession. The date the buyer moves in, and any occupational rent payable if that happens before transfer is registered.

Suspensive conditions

Most property sales are suspended until certain conditions are met. These are known as suspensive conditions, and if they are not fulfilled by the deadline the contract lapses automatically.

The two most common examples are worth understanding before you sign.

  • Bond approval. The buyer securing a home loan within a set period, often around 30 days.
  • Sale of the buyer's current home. Where the purchase depends on the buyer successfully selling the property they already own.

The 72 hour clause

To protect a seller from being held up while a buyer waits for a bond, an offer often includes a 72 hour clause.

If the seller receives a better, unconditional offer from a second buyer while the first deal is still conditional, the seller can give the first buyer 72 hours to either waive their conditions or fulfil them. The period typically excludes weekends and public holidays. If the first buyer cannot do so, the seller is free to proceed with the second offer.

Defects and the voetstoots clause

In private sales, property is generally sold voetstoots, a Dutch term meaning as is. The buyer accepts the property with its existing faults.

There is a vital distinction, and it is where most disputes begin.

  • Patent defects are visible flaws, such as a cracked window. The buyer is responsible for spotting these during inspection.
  • Latent defects are hidden flaws, such as a leaking roof concealed by fresh paint. If the seller knew about a latent defect and deliberately hid it, they can still be held liable regardless of the voetstoots clause.

Fixtures, fittings and the mirror dispute

Disputes often arise over what stays and what goes, whether that is the pool pump, the bathroom mirrors or custom curtains.

The general rule is that fixtures, meaning items permanently attached to the land or the building, remain with the property, while fittings leave with the seller. To avoid conflict, include an inventory annexure that lists explicitly which items are included in the price.

One further protection is worth insisting on. Under the Property Practitioners Act a mandatory disclosure form is compulsory, and a seller signs a comprehensive defects list that gives the buyer transparency about the property's condition.

Better safe than stuck

An offer to purchase is not just a document. It is a legal roadmap, and once you sign it you are committed.

Before you commit to your next move, have the agreement reviewed professionally so that your interests are protected.

Common questions

Can an offer to purchase be signed electronically in South Africa?
No. Property transactions require wet ink signatures. The Electronic Communications and Transactions Act excludes agreements for the sale of immovable property from electronic signature, so an offer to purchase signed digitally is not valid.
When does an offer to purchase become binding?
The moment both the buyer and the seller have signed it. At that point it is a sale agreement, and neither party can withdraw without facing penalties, subject to any suspensive conditions written into it.
What happens if a suspensive condition is not met in time?
The contract lapses automatically. No party has to cancel it, and neither is in breach: the agreement simply falls away because the condition on which it depended was not fulfilled by the deadline.
Does the voetstoots clause protect a seller who hid a defect?
No. Voetstoots covers patent defects the buyer could have seen and latent defects the seller did not know about. A seller who knew about a latent defect and deliberately concealed it can still be held liable.
Who decides what counts as a fixture and what counts as a fitting?
The general rule is that anything permanently attached to the land or building is a fixture and stays, while a fitting goes with the seller. Because the line is often arguable, the practical answer is an inventory annexure listing exactly what is included.
Does the 72 hour clause include weekends?
Typically not. The period is usually written to exclude weekends and public holidays, but this depends on the wording of your particular agreement, so read the clause rather than assuming the convention applies.

Sources

Every figure on this page traces to one of these.

Published 1 September 2026. Figures verified 12 August 2026. General information about South African property practice, not legal or financial advice. Speak to a conveyancing attorney about your own transaction.

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