PI insurance for architects and engineers in Singapore
Who is exposed and for what
An architectural or engineering practice carries three layers of liability on every project.
- Contractual. The appointment with the client sets the scope, the standard of care and often a liability cap and a PI requirement. Under BCA's Public Sector Standard Conditions of Contract, consultants' appointment terms specify the PI limit and the period for which it must be maintained.
- Tort. Third parties who suffer loss from a design defect, including neighbouring owners, subsequent purchasers and contractors, can claim in negligence without a contract.
- Statutory. The Building Control Act 1989 places duties on the Qualified Person for structural and architectural works: to prepare plans that comply with the Act, to supervise, and to certify. Breach can lead to prosecution of the individual and to disciplinary action by the Board of Architects or the Professional Engineers Board.
PI responds to the first two. It pays damages and defence costs for civil claims. It does not pay criminal fines, though many wordings cover the legal costs of defending a prosecution or attending an inquiry.
The exposure is physical as well as financial. Design errors surface as cracking, water ingress, settlement of neighbouring buildings during excavation, and failures in temporary works. The construction fatal and major injury rate was 26.3 per 100,000 workers in 2025. A collapse that injures workers produces claims against the contractor first, then against the designer and the supervising QP.
What a 2022 High Court case shows about PI insurance for architects and engineers in Singapore
SYT Consultants v QBE Insurance [2022] SGHC 251 shows how a design PI policy responds. SYT was the engineering consultant for earth-retaining works that damaged two neighbouring properties. The owners sued the builder and developer, who sued SYT and its director. SYT held a S$2 million PI policy.
SYT denied liability through the proceedings, then signed a settlement accepting 100% liability and consented to judgment of about S$3 million. The insurer had already denied cover. SYT sued for the S$2 million limit and lost.
The reasoning carries 4 lessons.
- A consent judgment on a settlement is an agreement, not an adjudicated liability. The insured must prove it would have been liable anyway, usually by showing the settlement was reasonable. SYT could not, because its director's evidence was that he believed the firm was not liable.
- Settling without the insurer's consent is the fastest way to lose cover. The insurer controls the defence and settlement.
- The dishonesty exclusion was not triggered. A genuine belief that a missing raking strut was a minor deviation was negligence, not dishonesty.
- The duty to cooperate was breached, but it was not a condition precedent in this wording, so that alone would not have defeated the claim.
A practice facing a claim should notify the insurer at the first letter and let the insurer's panel lawyers run the defence. The claim in SYT was within the limit until the settlement took it outside the policy.
Annual practice policy or project-specific PI
Most practices hold an annual professional indemnity policy covering all their work. Some projects add a project-specific policy on top. The two differ in who buys them and how long they run.
| Feature | Annual practice policy | Project-specific PI |
|---|---|---|
| Insured | The practice, for all projects | All consultants on one project, often the contractor too |
| Bought by | The practice | The employer or main contractor |
| Period | 12 months, renewed; claims-made | Construction period plus a fixed discovery period, often 6 to 12 years |
| Limit | Shared across all projects and all claims in the year | Dedicated to the project |
| Retroactive date | Set at first inception, carried forward | Project start |
| Suits | Every practice | Large or high-risk projects where the employer wants one dedicated limit that outlasts the consultants' own policies |
Project PI solves the problem that a consultant's annual limit is shared. A practice with a S$2 million annual limit on 15 projects has S$2 million for all of them. If one project produces a S$2 million claim, the other 14 are uninsured for the rest of the year unless the limit reinstates.
Project PI also survives the consultants. If the structural engineer closes 5 years after completion, the project policy still responds. The employer pays for that and usually deducts it from fees.
Limits, excesses and what moves the premium
The appointment sets the floor. Institutional clients specify a PI limit per claim, often costs in addition, maintained for a period after completion, commonly 6 years to match the limitation period for contract claims.
Three choices shape the premium beyond the limit.
- Basis of limit. Any one claim with reinstatements costs more than an annual aggregate. Design claims cluster, so reinstatements matter.
- Excess. Design PI excesses are higher than for other professions because claims are large. It should be affordable 2 or 3 times in a bad year.
- Fee split. Structural and geotechnical engineering rate higher than architecture, which rates higher than interior design or project management.
Insurers also look at the largest projects, use of subconsultants, liability caps, and 10 years of claims and circumstances. Chubb's Singapore underwriting view records that PI rates began hardening in 2019 and that appetite narrowed through 2021. Chubb offers a dedicated PI product for architectural and engineering firms in Singapore, as do other insurers; wordings differ on contractual liability and on pollution and asbestos exclusions.
Worked example. The figures are an example. A practice holds a S$2 million any-one-claim limit, costs in addition, with a S$50,000 excess. A neighbour's settlement-damage claim settles at S$1.6 million with S$400,000 of defence costs. The insurer pays both; the practice pays S$50,000. On a costs-inclusive S$2 million limit, the same claim exhausts the limit, leaving nothing for a second claim that year.
Run-off: what happens when the firm closes or the QP retires
Claims-made cover means the policy in force when the claim is made pays. When a practice closes, merges or a sole practitioner retires, the annual policy stops. Claims for the last 10 to 15 years of work still arrive.
Run-off cover is an annual PI policy that accepts no new work but continues to accept claims for past work. It is bought for a fixed term, often renewable year by year, and priced as a declining percentage of the last live premium. A practice that merges into another should check whether the acquirer's policy covers prior acts of the acquired firm, or whether separate run-off is needed.
A Qualified Person who retires faces the same issue personally. Claims are pleaded against the QP by name as well as against the firm. The firm's policy covers the individual for work done as its employee or director, but only while the policy, or its run-off, is in force. A QP leaving a practice should obtain written confirmation that the policy continues to cover their past work.
The time horizon is long. Latent defects are discovered when water ingress appears, when a tenant fits out, or when a neighbour excavates. A practice that stops buying PI 2 years after closing is exposed for the following decade. The claims-made and retroactive date explainer sets out the mechanics, and the contractors' all risks explainer covers the project policy alongside.
Frequently asked questions
Is PI compulsory for registered architects and PEs in Singapore?
No statute requires it in the way Section 75A of the Legal Profession Act does for lawyers. The Building Control Act 1989 sets duties on Qualified Persons but does not mandate insurance. In practice every institutional appointment, and BCA's PSSCOC consultancy terms, require a stated PI limit, so the requirement is contractual.
How long after project completion can a design claim arrive?
Years. Latent defects surface on fit-out, water ingress or neighbouring works. Appointments often require PI to be maintained for 6 years after completion, and limitation periods for latent damage can run longer. The policy in force when the claim is made is the one that pays.
Annual practice policy or project-specific PI?
Every practice needs an annual policy. Project PI is added by the employer on large or high-risk projects to give one dedicated limit that outlasts the consultants' own policies, with a discovery period of 6 to 12 years. The employer usually pays and deducts the cost from fees.
What happens to cover when the firm closes?
The annual policy stops accepting claims when it lapses. Run-off cover continues to accept claims for past work for a fixed term. Without it, the firm and its Qualified Persons are uninsured for every project they ever delivered. Acquirers and retiring QPs should obtain run-off or written prior-acts cover.
Sources
- Building Control Act 1989
- [SYT Consultants Pte Ltd v QBE Insurance (Singapore) Pte Ltd [2022] SGHC 251](https://www.elitigation.sg/gd/s/2022_SGHC_251)
- MOM: Workplace Safety and Health Report 2025
- BCA: Public Sector Standard Conditions of Contract
- Chubb Singapore: Professional indemnity insurance
- Chubb Singapore: The evolving landscape of professional indemnity
General information only, not advice on any particular policy. Cover depends on the policy wording and the insurer's terms.