Civil Law and UAE Engineering Liability and Professional Negligence

1. Introduction

Engineering liability and professional negligence in the UAE arise when an architect, engineer, consultant, contractor, or other construction professional fails to perform the professional, contractual, technical, or statutory duties applicable to the project and that failure causes legally compensable loss.

The subject sits at the intersection of:

• UAE civil liability;
• professional standards;
• engineering and construction contracts;
• tort/delict;
• contractual liability;
• expert evidence;
• building regulations;
• causation and damages; and
• decennial liability for serious structural defects.

There is an important legislative update for the current date. The UAE promulgated a new Civil Transactions Law in Federal Decree-Law No. 25 of 2025, replacing the previous 1985 Civil Code framework from 1 June 2026. The new legislation largely preserves the traditional decennial-liability structure but reorganises and renumbers provisions.

Accordingly, older reported cases commonly refer to Articles 880–883 of the 1985 Civil Code, while the corresponding provisions under the new Civil Transactions Law are principally Articles 821–824.

2. Meaning of Engineering Liability

Engineering liability means legal responsibility arising from professional engineering activities such as:

• architectural design;
• structural design;
• engineering calculations;
• site supervision;
• inspection;
• certification;
• project management;
• approval of construction work;
• technical advice;
• quality control;
• safety assessment;
• preparation of specifications.

An engineer may therefore be liable where the professional service contains a defect and that defect legally causes damage.

For example:

Defective structural design

→ inadequate load calculations

→ structural cracking

→ loss to building owner

→ engineering liability.

However, the mere existence of a defect does not automatically establish ordinary professional negligence. The claimant normally needs to establish the applicable legal basis of liability, causation and compensable damage.

3. Professional Negligence

Professional negligence generally involves a failure to exercise the level of care and technical competence expected from a reasonably competent professional performing the relevant professional function.

Typical examples include:

1. defective structural calculations;
2. inadequate soil assessment;
3. failure to detect serious construction defects;
4. improper supervision;
5. negligent approval of defective works;
6. inaccurate engineering certification;
7. failure to comply with applicable technical requirements;
8. inadequate safety measures;
9. failure to warn of material structural risks;
10. negligent project-management decisions.

The professional standard is especially important because engineering is a specialized profession.

4. Contractual and Tortious Liability

Engineering liability may arise through different legal routes.

A. Contractual liability

An engineer may have a contract with:

• the owner;
• developer;
• contractor;
• project manager.

If the engineer fails to perform contractual obligations, the claim may be contractual.

B. Tort/delict liability

A claim may also arise where an engineer's wrongful conduct causes legally compensable damage independently of contractual obligations.

C. Statutory decennial liability

Serious structural defects may trigger the special statutory regime concerning the durability and safety of buildings.

This is particularly important because decennial liability is not simply ordinary professional negligence.

5. The Professional Standard of Care

Under the traditional UAE Civil Code framework, Article 881 stated the professional-care principle in substance: a person who professes a particular skill or profession must exercise the diligence generally observed by persons practicing that profession in the same circumstances and place.

This principle has been important in engineering disputes.

Therefore, an engineer is not ordinarily judged solely by whether the project eventually experienced a problem.

The relevant questions include:

• What was the engineer retained to do?
• What professional standard applied?
• What information was reasonably available?
• What technical steps should have been taken?
• Did the engineer depart from accepted professional practice?
• Did the departure cause the damage?

The new Civil Transactions Law continues the modernisation of the general civil-liability framework, while the older case law remains important for interpreting the corresponding principles.

6. Elements of Ordinary Professional Negligence

A useful framework is:

1. Professional duty

The engineer owed a contractual, professional, statutory, or civil-law duty.

2. Breach

The engineer failed to exercise the required professional care.

3. Damage

The claimant suffered actual legally compensable loss.

4. Causation

The professional breach caused or materially contributed to the damage.

Thus:

Duty + Breach + Damage + Causation = potential professional negligence liability.

The Dubai Court of Cassation has repeatedly treated liability in contractual and tort contexts as dependent upon the required combination of breach/fault, damage and causation. A recent DIFC judgment discussing UAE law cited Dubai Cassation Case No. 33/2019 in precisely this context.

7. Engineering Negligence and Expert Evidence

Engineering disputes are frequently technically complex.

A court may therefore require expert evidence concerning:

• structural calculations;
• design compliance;
• construction methodology;
• soil conditions;
• materials;
• project specifications;
• supervision;
• defects;
• causation;
• repair costs.

The UAE procedural framework has also developed the role of technical expertise. A December 2025 amendment to the Civil Procedure Code expressly strengthened the ability of courts to appoint local or international experts to prepare or review expert reports.

Expert evidence does not automatically determine the case. The court remains responsible for deciding the legal consequences of the established facts.

8. Design Engineer vs Supervising Engineer

A very important distinction exists between different engineering functions.

An engineer who:

Only designs

may primarily be responsible for defects resulting from the design.

An engineer who:

Designs and supervises

may potentially bear wider responsibility for both design-related defects and failures in supervision.

An engineer acting as:

Site supervisor/consultant

may have responsibility for negligent inspection, certification or failure to detect serious defects falling within the scope of the engagement.

This distinction is reflected in the UAE case law concerning Articles 880 and 881.

9. Case Law 1 — Federal Supreme Court, Appeal No. 416 of 2006

Engineer's responsibility depends upon the engineer's function

This is an important authority concerning the liability of an architect or engineer.

The Court considered Articles 880 and 881 of the Civil Transactions Law and distinguished the responsibilities of an engineer according to the scope of the engineer's professional work.

Where an engineer participates in the design and/or supervision of construction, the engineer may fall within the statutory responsibility applicable to construction defects.

Where the engineer's function is limited to design, responsibility is principally connected with defects arising from that design.

Principle

Engineering liability must be connected to the professional function actually undertaken by the engineer.

The case is particularly important because it prevents the automatic imposition of liability for every defect on every professional involved in a construction project.

10. Case Law 2 — Dubai Court of Cassation, Civil Appeal No. 6 of 2004

Scope of decennial liability

The Dubai Court of Cassation considered Articles 880 and 883 of the Civil Transactions Law.

The Court explained that the special guarantee of the contractor and supervising engineer is directed toward:

• total or partial collapse; and
• defects threatening the durability and safety of the building.

It does not automatically extend to every defect discovered in a building.

Importance

This distinction is fundamental.

For example:

Structural defect threatening building stability

→ potentially decennial liability.

But:

Minor aesthetic defect

→ ordinarily does not fall within the special decennial regime merely because it is a defect.

The nature and seriousness of the defect therefore matter.

11. Case Law 3 — Dubai Court of Cassation, Case No. 150 of 2007

Decennial liability and soil conditions

This case is an important authority concerning the mandatory character of the decennial-liability regime.

The Court held, in substance, that the statutory responsibility concerning serious structural defects could apply even where the defect was connected with conditions in the underlying soil.

The owner's acceptance of the building did not simply eliminate the statutory responsibility.

Principle

Acceptance of the building by the employer does not necessarily waive the mandatory statutory protection applicable to serious structural defects.

This case is frequently cited in discussions of UAE decennial liability.

12. Case Law 4 — Federal Supreme Court, Appeal No. 312 of Judicial Year 19

Contractor/engineer and contractual relationships

The Federal Supreme Court considered the construction-contract framework and the relationship between the employer, contractor and subcontractor.

The Court emphasized the contractual nature of the statutory decennial warranty in the relevant relationship.

The decision is important because it illustrates that the statutory construction guarantee should not automatically be extended to every person suffering loss from a construction defect.

Principle

The scope of the special construction warranty depends upon the legal relationship contemplated by the statutory provisions.

A third party suffering damage may need to rely upon a separate tortious basis rather than automatically invoking the contractual decennial warranty.

13. Case Law 5 — Dubai Court of Cassation, Case No. 567 of 2018 Commercial

Engineer's payment certification

This case is particularly relevant to professional engineering services.

The Dubai Court of Cassation considered the legal significance of a payment certificate issued by an engineer/consultant.

The judgment has subsequently been discussed by the DIFC Courts in International Electro-Mechanical Services Co. LLC v Emirates Speciality Hospital FZ-LLC.

The principle was that an engineer's payment certificate can constitute significant evidence concerning:

• inspection of works;
• quantity;
• quality;
• value;
• conformity with contractual requirements;
• entitlement to payment.

The DIFC Court noted that the certificate may operate as evidence against its issuer, subject to issues such as authority and fraud/collusion.

Importance

This demonstrates that engineering professionals can incur legal consequences not only from defective designs but also from professional certifications and representations made during project administration.

14. Case Law 6 — Dubai Court of Cassation, Case No. 309 of 2016

Multiple contributors to damage

This case is important where several professionals or construction participants contribute to the same harm.

The Dubai Court of Cassation explained the conditions for joint liability for compensation under Article 291 of the former Civil Code.

The principles discussed include:

1. each liable person must have committed a fault;
2. the fault must have contributed to the damage;
3. the different faults may combine to produce one harmful result.

The case has subsequently been considered in Union Properties PJSC v Trinkler & Partners Ltd [2026] ADGMCFI 0010.

Engineering application

Imagine:

• Engineer A negligently designs a structural system;
• Consultant B negligently supervises construction;
• Contractor C uses defective materials.

If their respective breaches contribute to the same damage, questions of concurrent causation and joint liability can arise.

15. Case Law 7 — Union Properties PJSC & Anor v Trinkler & Partners Ltd & Others

[2026] ADGMCFI 0010

This is a particularly useful recent UAE-law authority.

The ADGM Court examined UAE-law principles concerning:

• tortious liability;
• causation;
• multiple contributors;
• Article 291;
• temporal connection between conduct and damage.

The Court discussed Dubai Court of Cassation Appeal No. 309/2016 and explained the requirements for joint liability under UAE law.

Engineering significance

Construction damage frequently involves multiple actors:

owner + architect + structural engineer + consultant + contractor + subcontractor

Determining which actor caused what part of the damage can therefore be central to liability.

16. Case Law 8 — BAM Higgs & Hill LLC v Affan Innovative Structures LLC

[2021] DIFC CFI 106

Although the case arose in the DIFC and involved construction-contract issues, it is useful for understanding UAE construction law.

The DIFC Court discussed the UAE Civil Code provisions concerning contracts for work (Muqawala), including construction and engineering contracts.

The judgment also discussed compensation under the UAE Civil Code and cited Dubai Court of Cassation Case No. 155/2012 concerning assessment of damages.

Importance

The case illustrates that engineering disputes are not confined to tort.

They may involve:

• contract interpretation;
• termination;
• performance obligations;
• professional duties;
• damages;
• construction standards.

17. Decennial Liability

One of the most distinctive features of UAE construction law is decennial liability.

Under the former Civil Code, Articles 880–883 established a special regime under which the contractor and architect/engineer supervising the construction could be jointly liable for:

• total or partial collapse; or
• defects threatening the stability or safety of the building.

The new Civil Transactions Law, effective from 1 June 2026, preserves this basic regime while renumbering the relevant provisions as Articles 821–824.

18. Why Decennial Liability Is Different

Ordinary professional negligence generally requires proof of:

fault/breach + damage + causation.

Decennial liability is different.

It is a special statutory warranty regime directed at serious structural defects.

Consequently, the claimant does not simply have to prove ordinary negligence in the same way as a conventional professional-negligence claim.

This is why UAE construction law treats decennial liability as a distinct category.

19. Ten-Year Period

The special liability historically operates for ten years from delivery of the building.

The basic statutory concept concerns serious structural defects affecting:

• stability;
• durability;
• safety;
• complete or partial collapse.

The new Civil Code continues this fundamental ten-year structure.

20. What Defects Are Covered?

The special regime is primarily concerned with defects of sufficient seriousness to threaten the building.

Potentially covered

• structural failure;
• foundation failure;
• serious structural cracking;
• defects threatening stability;
• defects creating a substantial safety risk;
• total or partial collapse.

Generally outside the special decennial regime

• purely aesthetic defects;
• ordinary finishing defects;
• minor workmanship defects;
• defects that do not threaten durability or safety.

The Dubai Court of Cassation's Civil Appeal No. 6/2004 is important on this distinction.

21. Design Defects

A design engineer can potentially face liability where the engineering design itself is defective.

Examples include:

• incorrect structural calculations;
• insufficient load capacity;
• inadequate foundation design;
• failure to account for foreseeable environmental conditions;
• incorrect material specifications;
• unsafe design assumptions.

The engineer's liability depends upon the professional role and applicable statutory regime.

Where the engineer was responsible only for design, liability may focus on the design defect itself rather than construction supervision.

This distinction is reflected in Federal Supreme Court Appeal No. 416/2006.

22. Supervision Negligence

A supervising engineer may have a separate professional obligation to inspect and monitor construction.

Possible failures include:

• failure to inspect structural work;
• approving defective materials;
• ignoring obvious deviations from approved drawings;
• certifying incomplete work;
• failing to warn the owner;
• failing to report serious safety problems.

A supervising engineer is not necessarily responsible for every mistake made by the contractor.

The legal question is whether the defect falls within the engineer's contractual and professional supervisory responsibilities.

23. Professional Certification Liability

Engineering certificates can have substantial legal consequences.

Examples include:

• completion certificates;
• payment certificates;
• inspection certificates;
• compliance certificates;
• structural certificates.

A certificate may represent that certain work has been inspected and satisfies specified requirements.

The Dubai Cassation authority discussed in Case No. 567/2018 Commercial demonstrates the evidentiary significance that courts can attach to engineering payment certificates.

Therefore:

Professional certification itself can become the source of legal responsibility when it is negligently or improperly issued.

24. Causation

Causation is often the most difficult issue in engineering-negligence cases.

A claimant may prove:

"The engineer made a mistake."

But that is not necessarily enough.

The claimant must also establish:

"The mistake caused the damage for which compensation is claimed."

For example:

Defective design

→ but contractor materially changed the design

→ unexpected extreme event occurs

→ separate construction defect causes collapse.

The court may then need to determine which event legally caused the loss.

25. Concurrent Engineering Liability

Construction projects commonly involve multiple professionals.

For example:

Where multiple faults contribute to one injury, UAE law can raise questions of joint liability and contribution.

Dubai Cassation 309/2016 and Union Properties v Trinkler [2026] are useful authorities on these issues.

26. Contractor vs Engineer Liability

The engineer and contractor have different professional functions.

Contractor

Generally responsible for executing the works according to:

• drawings;
• specifications;
• contract;
• applicable technical requirements.

Engineer

May be responsible for:

• design;
• supervision;
• inspection;
• certification;
• professional advice.

Therefore, the court should identify which obligation was breached before attributing liability.

27. Employer's Acceptance of the Building

An important UAE principle is that acceptance of the completed building does not necessarily eliminate decennial liability.

This is illustrated by Dubai Court of Cassation Case No. 150/2007.

The special statutory regime exists to protect the structural safety and durability of buildings.

Consequently, an argument such as:

"The owner inspected and accepted the building"

does not necessarily defeat a decennial claim involving a qualifying structural defect.

28. Force Majeure

Decennial liability is stringent, but statutory defences can exist.

Force majeure may become relevant where an extraordinary external event causes the damage and falls within the applicable legal requirements.

However, ordinary:

• poor workmanship;
• defective design;
• inadequate supervision;
• failure to comply with engineering standards

would not ordinarily become force majeure merely because they later produce serious damage.

29. Damages for Professional Negligence

Depending on the legal basis and proof, damages may include:

• repair costs;
• replacement costs;
• cost of correcting defective design;
• additional construction expenses;
• property damage;
• consequential loss where legally recoverable;
• lost profits where sufficiently established;
• other proven economic loss.

The court normally requires evidence that the claimed loss is actually connected to the professional breach.

The UAE construction jurisprudence therefore distinguishes between:

defect

and

financial consequences of defect.

30. Standard of Proof and Experts

Engineering disputes often require technical evidence.

An expert may investigate:

• drawings;
• structural calculations;
• specifications;
• site records;
• inspection reports;
• photographs;
• laboratory tests;
• concrete quality;
• soil investigations;
• construction methodology;
• payment certificates.

The court can then determine the legal significance of the technical findings.

The recent procedural amendments strengthening courts' ability to use local and international experts are particularly relevant to technically complex construction disputes.

31. Contractual Limitation of Liability

Engineering contracts may contain:

• liability caps;
• exclusions;
• insurance provisions;
• indemnity clauses;
• professional-liability provisions.

However, contractual limitations must be assessed against mandatory UAE law.

Particularly important is the decennial-liability regime, because parties cannot simply use an ordinary contractual clause to defeat mandatory statutory responsibility where the law prohibits such exclusion.

Therefore:

Freedom of contract does not necessarily permit an engineer or contractor to contract out of mandatory structural liability.

32. Insurance

Engineering and construction risks may be covered through:

• professional indemnity insurance;
• contractor's liability insurance;
• construction all-risk insurance;
• project-specific policies.

Insurance does not necessarily eliminate the underlying civil liability.

It may instead provide a mechanism for satisfying or mitigating the financial consequences of liability.

33. Professional Licensing

Engineering is a regulated professional activity.

Consequently, civil liability may exist alongside:

• professional licensing requirements;
• municipal requirements;
• building regulations;
• technical standards;
• disciplinary measures.

A professional may therefore face multiple consequences from the same conduct:

civil compensation

professional/administrative consequences

potentially other legal consequences depending upon the conduct.

A professional disciplinary breach and a civil claim for damages should nevertheless be distinguished because they involve different legal questions.

34. New Civil Transactions Law — 2026 Significance

The new UAE Civil Transactions Law is particularly important for engineering liability because it reorganises the rules governing contracts for work and decennial liability.

The UAE Government describes the new legislation as a comprehensive modernization of the civil-law framework. It also expressly notes reforms to the rules governing contracts of works, including clarification of responsibilities and treatment of unforeseen circumstances.

From 1 June 2026, the new statutory numbering should therefore be used when analysing new claims.

The traditional provisions:

Articles 880–883

are now principally reflected in:

Articles 821–824.

35. Comparison of Liability Types

36. Important Case-Law Summary

37. Practical Example

Assume a developer constructs a high-rise building.

The structural engineer:

1. prepares the structural design;
2. approves the structural drawings;
3. supervises construction;
4. certifies structural works.

After several years, major structural cracking appears.

An expert investigation concludes that:

• the original load calculations were inadequate;
• the contractor followed the engineer's drawings;
• the engineer failed to identify the structural deficiency;
• the defect threatens building stability.

The legal analysis could involve:

Contractual liability

Was the engineer's contractual scope breached?

Professional negligence

Did the engineer fall below the applicable professional standard?

Causation

Did the engineering error cause the structural defect?

Decennial liability

Does the defect fall within the mandatory statutory regime?

Contractor liability

Did the contractor independently contribute to the defect?

Joint liability

Did multiple participants contribute to the same damage?

Damages

What is the reasonable cost of repair or replacement?

This illustrates why engineering disputes cannot be reduced to a simple question of whether "the engineer made a mistake."

38. Key Legal Principles

Principle 1 — Professional expertise creates a heightened standard of care

Engineers are expected to exercise the competence and diligence ordinarily expected from professionals performing the same specialized function.

Principle 2 — Role determines responsibility

A design engineer and a supervising engineer do not necessarily have identical liability.

Principle 3 — Defect alone is insufficient for ordinary negligence

Fault, damage and causation must generally be established.

Principle 4 — Decennial liability is exceptional

The special statutory regime addresses serious structural defects affecting durability and safety.

Principle 5 — Not every construction defect is a decennial defect

Minor or aesthetic defects ordinarily fall outside the special regime.

Principle 6 — Multiple participants can contribute to one loss

Engineer, consultant and contractor may potentially share liability where the legal requirements for joint responsibility are satisfied.

Principle 7 — Expert evidence is often crucial

Technical questions frequently require specialist evidence.

Principle 8 — Mandatory statutory liability cannot simply be eliminated by contract

Parties' contractual arrangements operate subject to mandatory UAE law.

39. Conclusion

UAE engineering liability and professional negligence combine ordinary civil liability principles with specialized construction-law rules.

The principal analytical structure is:

Professional duty → applicable engineering standard → breach/defect → causation → damage → appropriate liability regime → compensation.

Where the dispute concerns ordinary negligent professional services, the claimant generally needs to establish the relevant duty, breach, damage and causal connection.

Where the dispute concerns a serious structural defect, the analysis may instead engage the special decennial-liability regime, historically found in Articles 880–883 of the former Civil Code and now reorganized principally under Articles 821–824 of the new Civil Transactions Law effective 1 June 2026.

The UAE case law—from Federal Supreme Court Appeal No. 416/2006, Dubai Cassation Civil Appeal No. 6/2004, Dubai Cassation No. 150/2007, Dubai Cassation No. 567/2018, Dubai Cassation No. 309/2016, through the recent Union Properties v Trinkler [2026]—shows that courts pay close attention to the engineer's actual professional role, the nature of the defect, causation, the involvement of other construction participants, and the distinction between ordinary negligence and mandatory structural liability.

Key principle

An engineer in the UAE is not automatically liable for every construction defect; liability depends on the professional function undertaken, the applicable contractual and civil-law duties, the nature and seriousness of the defect, causation, and—where structural safety is involved—the mandatory statutory regime governing decennial liability.