63 Cal.App.5th 719
Cal. Ct. App.2021Background
- A 2010 mudslide affected three adjacent properties in San Juan Capistrano owned by Coral Farms, the Mikoses, and the Mahonys.
- In a 2013 court‑approved Settlement Agreement each owner agreed to implement property‑specific mitigation plans (Exhibits A–C) and to obtain and exchange a written report from their design engineer or geologist stating the work was in "substantial compliance" with their plan.
- Coral Farms and the Mikoses later sued the Mahonys alleging the Mahonys’ as‑built work deviated materially from Exhibit A and breached the Settlement Agreement; the Mahonys produced an engineer’s written report stating their work was substantially completed per the approved plan.
- After a seven‑day bench trial the superior court found the Settlement Agreement did not permit parties to “look behind” a party’s engineer report and further found no evidence of bad faith, fraud, or gross negligence by the Mahonys’ engineer.
- Coral Farms appealed arguing contract misinterpretation and evidentiary errors; the Court of Appeal reviewed the contract de novo (no conflicting extrinsic evidence) and affirmed.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Interpretation of the "Final Approval" clause | Coral Farms: court misinterpreted clause; parties should be able to challenge whether Mahonys actually performed required work (not be limited to engineer's report). | Mahony: clause requires each party to obtain a written engineer/geologist report; that report is conclusive on substantial compliance absent fraud/bad faith/gross negligence. | The engineer's written report is conclusive under the contract; court may not "go behind" it absent fraud, bad faith, or gross negligence. |
| Need for express words ("certificate" or "final") | Coral Farms: contract uses "written report" and lacks explicit words making it "final" or "conclusive." | Mahony: legal rule that third‑party determinations are binding is incorporated by reference; plain language and title ("Final Approval") show intent. | The law presumes incorporation of existing legal principles; finality is implied and the contract’s plain language supports that result. |
| Deviations from the approved plan / impracticability | Coral Farms: Mahonys changed the Norris Plan without invoking impossibility/impracticability and thus breached. | Mahony: changes (e.g., to obtain permits) were addressed by the contract, and the engineer still certified substantial compliance. | Trial court reasonably found no force majeure issue; deviations did not allow rebutting the engineer’s certificate absent proof of fraud/bad faith/gross negligence. |
| Evidentiary rulings (admission/exclusion of impeachment evidence) | Coral Farms: the court erred by excluding/admitting evidence that would impeach the engineer’s conclusion. | Mahony: such evidence is irrelevant because parties agreed the engineer’s certificate is conclusive unless fraud is shown. | Evidentiary rulings reviewed for abuse of discretion; any errors were not prejudicial because the contested evidence was irrelevant to the conclusive engineer certificate. |
Key Cases Cited
- Moore v. Kerr, 65 Cal. 519 (1884) (third‑party superintendent’s approval is conclusive absent collusion or fraud)
- Brown v. Aguilar, 202 Cal. 143 (1927) (architect/engineer certificates treated as final and conclusive in absence of bad faith)
- American Trust Co. v. Coryell, 3 Cal.2d 151 (1935) (engineer’s certificate is a complete defense to owner’s claim absent fraud)
- Pacific Commercial Co. v. Greer, 129 Cal.App. 751 (1933) (determination by a chosen third person is conclusive unless shown to be fraudulent or arbitrary)
- Hagginwood Sanitary Dist. v. Downer Corp., 179 Cal.App.2d 756 (1960) (engineer’s decision is final where contract indicates intent that the engineer be the final arbiter)
- AIU Ins. Co. v. Superior Court, 51 Cal.3d 807 (1990) (contract interpretation governed by objective intent inferred from the writing)
- Founding Members of the Newport Beach Country Club v. Newport Beach Country Club, Inc., 109 Cal.App.4th 944 (2003) (when extrinsic evidence conflicts, appellate courts defer to reasonable constructions supported by substantial evidence)