Yooshin Engineering Corporation v Aia Architects Limited
The bottom line
#Kenya's Court of Appeal freed a contractor from depositing Kshs 413 million before defending a case, but confirmed that appearing in court waives complaints about unserved summons.
What this practically means
#Executive summary
#Key legal issues
#Whether the interlocutory judgment was regular or irregular given non-service of summons
Although summons were never served, the Appellant, by filing a memorandum of appearance and participating in proceedings without raising the issue of non-service, waived its right to object, rendering the judgment regular and settable aside only on just terms.
The trial judge found summons were not served, but the Appellant filed a memorandum of appearance on 20th May 2019 and participated in proceedings without objection. Applying Nanjibhai Prabhudas v Standard Bank, a defect in service that has come to the defendant's knowledge is an irregularity capable of waiver, not a nullity. An unconditional appearance has always been regarded as waiving any irregularity in service.
Whether the trial court's imposition of a deposit of Kshs 413,900,005.00 as a condition for setting aside the default judgment was a proper exercise of discretion
It was not. Having awarded thrown away costs and found the defence raised triable issues, it was an error of principle to additionally order the deposit; the conditions were based on irrelevant factors (foreign status, lack of assets) drawn from Order 39 attachment-before-judgment principles inapplicable to setting aside default judgment.
Discretionary decisions must rest on fixed principles and evidence, not private sentiments. The judge's reasons - the Appellant's foreign status and absence of fixed assets in Kenya - would be relevant only to an Order 39 application, whose conditions precedent are irrelevant to setting aside a default judgment. Absent evidence of intention to overreach, obstruct or delay, the overriding consideration is to do justice to both parties; the deposit of an unproved contested sum did not advance the overriding objective.
The standard for appellate interference with discretionary decisions
An appellate court interferes only where discretion was exercised injudiciously - on a whim, capriciously, on wrong principle, on irrelevant considerations, or in disregard of relevant ones - not merely because the appellate court would have decided differently.
Guided by the Supreme Court in Apungu Arthur Kibira and Kacem v Bashir, the criteria for a successful appeal against a discretionary decision are stricter than for a general appeal. The same standard is restated in Mbogo v Shah: the court interferes where satisfied the decision is clearly wrong or the judge misdirected himself. That standard was met here because irrelevant factors were taken into account and relevant ones ignored.
Whether a default judgment entered without service can attract conditions when set aside
Where a judgment is irregular because service was not effected, it must be set aside as of right without conditions; conditions may only be imposed where a regular judgment is being set aside, and such conditions must be just to both parties.
The Court drew the Bouchard distinction between irregular judgments (set aside ex debito justitiae, no conditions attach) and regular judgments (set aside on just terms within a wide judicial discretion). Where a regular judgment is set aside, conditions - such as thrown away costs - may be imposed, but not every case warrants conditions beyond costs; the court must ask itself whether conditions, if any, are just to both plaintiff and defendant.
Legal principles established
#- Where default judgment is entered without service of summons to enter appearance, it is irregular and must be set aside ex debito justitiae as a matter of right, regardless of whether a defence exists, and no conditions may be imposed; but where the defendant has appeared and participated without raising non-service, the defect is waived and the judgment becomes regular, settable aside only on just terms at the court's discretion.
- An unconditional appearance to an action waives any irregularity in service; procedural defects are not nullities unless of a most fundamental nature.
- Where a regular default judgment is set aside and the intended defence raises triable issues, imposing an onerous monetary deposit as a further condition is an error of principle; the overriding consideration is to do justice to both parties.
- An appellate court will not interfere with the exercise of discretion by the High Court unless it is shown that the discretion was exercised injudiciously - based on error of law or principle, taking into account irrelevant considerations, failing to take account of relevant considerations, or that the decision is plainly wrong.
- The conditions precedent for granting an attachment-before-judgment order under Order 39 of the Civil Procedure Rules are irrelevant to, and cannot be imported into, the determination of conditions for setting aside a default judgment.
- In interlocutory appeals, the Court may only express its views on a prima facie basis so as not to embarrass or tie the hands of the trial court that will ultimately hear the case.
Court orders
#- 1.The appeal is allowed
- 2.The decision setting aside the interlocutory (default) judgment and directing that the matter go to trial on merits is affirmed
- 3.The award of thrown away costs of Kshs 100,000.00 to the Respondent is affirmed
- 4.The order directing the Appellant to deposit Kshs 413,900,005.00 as a condition for setting aside the ex parte judgment is set aside
- 5.Costs of the appeal awarded to the Appellant
- On appeal from
- High Court of Kenya (station not stated)
- Not stated
- Jurisdiction invoked
- First appeal to the Court of Appeal under Article 164 of the Constitution (provision not expressly cited in the judgment)
Key timeline
#Practical implications
#Frequently asked questions
#Later judgments citing this (11)
#Judgments in the corpus that rely on this one. Where the Court said how it treated the authority, that is shown.
- Watamu Men Fridays Limited v Attorney General & 4 others (Environment and Land Case E104 of 2019) [2026] KEELC 895 (KLR)[2026] KEELC 895 (KLR)17 Feb 2026applied
- Robert Mugo Cyrus v Mathew Mugo Gacenge T/A Gibs Estate Limited Givs Limited Super Gibs Limited[2025] KECA 2099 (KLR)5 Dec 2025applied
- Austin Sadala Khamisi & 4 others v Thomas Jerry Khamisi & 1 other[2025] KECA 1703 (KLR)24 Oct 2025applied
- Ndegwa v Mwangi (Environment and Land Case E15 of 2023) [2025] KEELC 6732 (KLR)[2025] KEELC 6732 (KLR)7 Oct 2025
- Kili v Maiyo & 4 others (Environment and Land Case E014 of 2023) [2025] KEELC 5516 (KLR)[2025] KEELC 5516 (KLR)23 Jul 2025followed
- Ethics & Anti-Corruption Commission v Anyega & 4 others (Environment & Land Case 249 of 2018) [2025] KEELC 4571 (KLR)[2025] KEELC 4571 (KLR)18 Jun 2025
- Gikundi v Kenya National Chamber of Commerce and Industry & 2 others (Cause E013 of 2021) [2025] KEELRC 1422 (KLR)[2025] KEELRC 1422 (KLR)16 May 2025applied
- Vickers Security Services Limited v Public Procurement Administrative Review Board & 3 others[2025] KECA 671 (KLR)11 Apr 2025
- Kenya Naional Private Security Workers Union v Patriotic Group of Companies (Cause E006 of 2023) [2025] KEELRC 933 (KLR)[2025] KEELRC 933 (KLR)26 Mar 2025applied
- Wahome v Lupra Manpower & Human Resource Services Limited & another (Cause 924 of 2017) [2024] KEELRC 1851 (KLR)[2024] KEELRC 1851 (KLR)16 Jul 2024
- Jonyo v Kandiawo & another (Environment and Land Appeal 7 of 2021) [2024] KEELC 4241 (KLR)[2024] KEELC 4241 (KLR)13 May 2024applied
Cite this brief
#Cite this brief
Caselaw, "Yooshin Engineering Corporation v Aia Architects Limited", Case Analysis (2023). Civil Appeal (number not stated in the judgment; Notice of Appeal filed 27th July 2022). Source: https://new.kenyalaw.org/akn/ke/judgment/keca/2023/872/eng@2023-07-07
Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.