Title
Ngo Sin Sing vs. Li Seng Giap and Sons, Inc.
Case
G.R. No. 170596
Decision Date
Nov 28, 2008
Petitioners' contractor caused structural damage to respondent's adjacent building during excavation. Court found contractor primarily liable, respondent contributorily negligent for unapproved modifications, reducing damages. Attorney's fees denied.
A

Case Summary (G.R. No. 170596)

Key Dates and Procedural Posture

Trial court: Regional Trial Court of Manila, Civil Case No. 83‑19367 (initial judgment holding petitioners and Contech liable, with allocation). Court of Appeals: Decision dated May 11, 2005 (modified trial court award, held petitioners and Contech solidarily liable for full reconstruction cost). Supreme Court: G.R. No. 170596, decision rendered November 28, 2008 (petition for review granted; trial court judgment reinstated with modification). Applicable constitutional framework: 1987 Philippine Constitution (decision rendered after 1990). Applicable statutory provisions and doctrines: Articles 2176 and 2194 and Article 684 of the New Civil Code; doctrines of quasi‑delict, solidary liability of joint tort‑feasors, contributory negligence, and supervening negligence.

Factual Background

Petitioners contracted Contech in 1978 to construct the NSS Building. During excavation and construction, tenants of the adjacent LSG Building reported cracks, bent doors, falling concrete, tilted floors and distorted frames. Inspections revealed excavation close to the common boundary and exposure of the LSG Building foundation. Contech initially undertook repairs (announced completion in December 1979), but further deterioration continued; consultants later found differential settlement, recommended demolition and reconstruction, and estimated reconstruction cost at P8,021,687.00.

Claims and Relief Sought

Respondent sued petitioners and Contech for sums covering: (1) P8,021,687.00 (demolition and reconstruction); (2) P154,800.00 (consultant fees); (3) P543,672.00 (lost rental income); and (4) P10,000.00 as attorney’s fees. Petitioners moved to dismiss and asserted that the LSG Building had preexisting structural deficiencies and that other forces (e.g., earthquakes, poor maintenance) contributed to the damage. Petitioners filed a cross‑claim against Contech pursuant to their construction contract; Contech denied liability, asserted compliance with plans, and argued any owner claim was waived for delayed notice.

Trial Court Findings and Disposition

The trial court found defendants negligent for excavating near the common boundary without properly braced sheet piles, which permitted soil erosion and damage to the LSG Building. The court also found the plaintiff (LSG) guilty of contributory fault: originally a two‑storey building, the LSG had added two floors (third and fourth) without reinforcing foundations, thereby overburdening the foundation and contributing to progressive settlement. On that basis the trial court apportioned liability equally: ordered defendants (Ngo spouses and Contech) jointly and severally liable for 50% of reconstruction cost (P4,010,843.50) and held Contech to reimburse petitioners for any amount petitioners might pay to respondent; it denied other damage claims for lack of sufficient basis.

Court of Appeals’ Ruling

The Court of Appeals affirmed in part and modified the trial court. It rejected the trial court’s finding of respondent’s contributory negligence, concluding instead that the petitioners (as owner) and Contech (as contractor) were solidarily liable under Article 2194 for the full cost of demolition and reconstruction. The CA awarded P8,021,687.00 with interest from filing date, plus 10% of the principal as attorney’s fees and costs.

Issues Raised in the Petition for Review

Petitioners (spouses Ngo) raised three principal assignments: (1) CA erred in disregarding evidence showing respondent’s contributory negligence as proximate cause; (2) CA erred in holding petitioners jointly and severally liable with Contech despite lack of proof of petitioners’ negligence; and (3) CA unjustifiably awarded attorney’s fees (10% of principal) without legal or factual basis.

Standard of Review and Approach to Conflicting Findings

The Supreme Court emphasized that while it normally defers to lower courts’ factual findings, it will re‑examine evidence when the Court of Appeals’ findings diverge from those of the trial court. The trial court’s proximity to the witnesses and evidence gives its findings greater weight; where the trial court’s factual findings are more consistent with the record, the Supreme Court is inclined to uphold them.

Analysis of the LSG Building’s Structural History

Record evidence showed the LSG Building’s foundation was designed for a two‑storey structure. Although permits and construction history varied (initial permits in the 1950s, fire in 1966, addition of third and fourth floors completed in 1968), the key point is that the original foundation supporting two floors was retained when two more floors were added. Expert testimony and the E.S. de Castro report pointed to progressive settlement and recommended removing the added floors or complete demolition. The Supreme Court emphasized that the overburdening of an unchanged foundation by added floors plausibly contributed to settlement and could not be discounted as a cause of the structural failure.

Contributory Negligence and Apportionment

The Court adopted the trial court’s view that respondent’s decision to add floors without reinforcing the foundation constituted contributory negligence. Contributory negligence is conduct by the injured party that legally contributes to the harm by falling below the protective standard. Given evidence that the LSG Building’s foundation was inadequate for the four‑storey load, the Court agreed a reduction of the award was warranted and that equitable apportionment (50–50) satisfied substantial justice. Therefore the trial court’s allocation that respondent bear 50% of the reconstruction cost was supported.

Liability of Petitioners and Contech; Supervening Negligence

The Court also sustained the trial court’s finding that Contech failed to observe proper excavation safeguards (sheet piles were not properly braced), and that such negligence was the proximate cause of the damage. Under the doctrine of supervening negligence, where multiple negligent acts exist but one party had the last clear opportunity to avoid the harm, that party may be primarily liable. Construction work requires technical expertise; owners may reasonably rely on contractors’ technical care. Contech’s omissions in excavation protocol and failure to secure appropriate insurance (Contractor All Risk / Erection All Risk) were relevant in assigning primary liability to the contractor.

Joint Tort‑feasors, Solidary Liability and Reimbursement Between Co‑defendants

The Court discussed applicable Civil Code provisions: Article 2176 (liability for quasi‑delict), Article 684 (prohibiting excavation that deprives adjacent land/buildings of sufficient lateral or subjacent

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