Performance Bond in Construction: How It Works in Singapore

When an owner awards a building contract, it takes a risk that the contractor will fail to perform, whether through poor work, abandonment or insolvency. A performance bond is the usual protection. It is a guarantee, typically issued by a bank or insurer on the contractor’s behalf, that the owner can call on to recover a sum of money if the contractor does not perform. It is a short document with large consequences, and it is often signed without much thought.

This article explains how a performance bond works, the difference between on-demand and conditional bonds, how Singapore courts approach disputed calls, and the practical points owners and contractors should consider. It is a general explanation for construction professionals and owners, not legal advice; the effect of a particular bond depends on its exact wording and the underlying contract.

What a performance bond is

A performance bond involves three parties. The contractor (the principal) arranges for a bank or insurer (the surety or issuer) to give an undertaking to the owner (the beneficiary). If the conditions of the bond are met, the issuer pays the owner up to a stated maximum amount. The issuer will then look to the contractor to reimburse it, usually under a counter-indemnity, so the contractor ultimately bears the cost.

The bond amount is normally a percentage of the contract sum stated in the contract, and the bond remains valid until a stated expiry date or event, often linked to completion or the end of the defects liability period. Public sector contracts under the PSSCOC and private forms such as the SIA and REDAS conditions all provide for performance security in some form, with the amount and duration set in the contract particulars.

On-demand and conditional bonds

On-demand bonds

An on-demand (or unconditional) bond requires the issuer to pay on receipt of a written demand from the beneficiary in the stated form, without the beneficiary having to prove that the contractor is in breach or what loss it has suffered. The issuer is not concerned with the underlying dispute. On-demand bonds are common in Singapore construction, and the PSSCOC and many private contracts call for them.

Conditional bonds

A conditional (or default) bond requires the beneficiary to establish the contractor’s breach and the resulting loss, sometimes by a certificate, judgment or arbitral award, before the issuer pays. It operates more like a traditional guarantee. Conditional bonds give the contractor more protection but give the owner less immediate security.

The distinction matters greatly in practice. With an on-demand bond, the money moves first and the parties argue about entitlement later in the underlying dispute. The bond is effectively a cash-flow and risk-allocation tool, not a determination of who is right.

When a performance bond can be called

The bond’s own wording governs when it may be called. Separately, the underlying construction contract may restrict when the owner is entitled to make a call, for example only after notice to the contractor or only for certain kinds of default. A call that complies with the bond but breaches the construction contract may give the contractor a claim against the owner, and in some cases grounds to restrain the call.

Common triggers in practice include contractor abandonment, termination for default, failure to rectify defects, and insolvency. Owners sometimes call bonds shortly before expiry when a dispute is unresolved, which is one reason contractors should track expiry dates and the contract’s provisions on extending or returning the bond.

How Singapore courts treat disputed calls

Singapore law differs from English law on restraining calls on on-demand bonds. In England, fraud is generally the only basis on which a court will restrain a call. Singapore courts recognise two grounds: fraud and unconscionability. The Court of Appeal referred to unconscionability in Bocotra Construction Pte Ltd v Attorney-General (1995), and in GHL Pte Ltd v Unitrack Building Construction Pte Ltd (1999) it confirmed that unconscionability is a separate ground from fraud.

The threshold for unconscionability is high. The applicant must show a strong prima facie case of conduct such as abuse, unfairness or bad faith, for instance a call for an amount clearly and excessively inflated beyond any plausible entitlement. A genuine dispute about who is at fault is not enough. Courts have also upheld clauses in which the parties agreed to limit challenges to a call to the ground of fraud only. The position is fact-specific and continues to develop through case law, so anyone facing or contemplating a call should take legal advice promptly.

Practical points for owners

Check the bond wording against the form required by the contract before accepting it; a bond in the wrong form may not give the protection expected.
Diarise the expiry date and the contract’s requirements for extending the bond if completion slips.
Call only where entitled under the construction contract, with the reasons documented. An unjustified call can lead to injunctions and claims.
Consider the issuer’s standing: a bond is only as good as the institution behind it.

Practical points for contractors

Understand the cost: issuers charge a fee and may require collateral or count the bond against banking facilities, which affects cash flow and capacity to take on other work.
Negotiate the wording where possible, including the amount, the expiry and any notice requirement before a call.
Back it down the chain: where appropriate, require bonds from key subcontractors so that risk is matched.
Keep good records of performance, instructions and disputes, so that any unjustified call can be challenged quickly.

Performance bonds sit alongside other contractual protections such as retention sums, liquidated damages and insurances. Each serves a different purpose, and owners should look at the package as a whole rather than relying on any one of them. On domestic renovation work, formal bonds are rare; protection there comes mostly from choosing a sound renovation contractor and a staged payment schedule.

Frequently asked questions

What is the difference between a performance bond and a retention sum?

A retention sum is a portion of each progress payment withheld by the owner and released later, typically in stages around completion and the end of the defects liability period. A performance bond is a separate guarantee from a bank or insurer that the owner can call on. Both protect the owner, but retention is money the owner holds while a bond is security provided by a third party.

Can an on-demand performance bond be stopped in Singapore?

A Singapore court may restrain a call on an on-demand bond on the ground of fraud or unconscionability, but the threshold is high and a genuine dispute about the underlying contract is not sufficient. Some contracts validly limit the grounds of challenge to fraud only. Anyone facing a call should seek legal advice promptly; this summary is not legal advice.

Who pays for a performance bond?

The contractor arranges and pays for the bond, and the issuer charges a fee for providing it. If the bond is called, the issuer pays the owner and then recovers the amount from the contractor under its counter-indemnity, so the contractor ultimately bears the cost.

When does a performance bond expire?

The expiry date or event is set out in the bond and the construction contract, often linked to completion or the end of the defects liability period. If the works are delayed, the contract may require the contractor to extend the bond so that the owner’s security continues.

Facing a dispute over defects or performance where an engineer’s independent assessment would help? Talk to our consultancy or get in touch.