Ontario’s condominium warranty landscape continues to evolve, particularly in the context of major structural defect (“MSD”) claims under Tarion. A recent decision of the Divisional Court in Allegra on Woodstream Inc. v. York Regional Standard Condominium Corporation No. 1284, 2025 ONSC 2777, highlights several significant clarifications for condominium corporations, developers, and their advisors.
The appeal arose from a Licence Appeal Tribunal (“LAT”) decision ordering Tarion to pay $1,736,271.23 to remedy MSDs in the underground parking garage used by YRSCC 1284 as part of its shared facilities. Allegra, the developer and builder, appealed the decision on both factual and legal grounds. The Divisional Court upheld the LAT’s ruling in full. While the award itself is substantial, the more impactful elements of the decision lie in the nature and scope of the Tribunal’s findings.
- Full-Structured Damages Recognized for Shared Facilities
The underground garage at issue serves not only YRSCC 1284 but also its sister corporation, YRSCC 1307, and a commercial corporation under a shared easement and cost‑sharing agreement. Despite YRSCC 1284 owning only part of the garage, the LAT awarded — and the Court affirmed — the full cost of repairing the entire structure.
This marks an important shift. Historically, Tarion’s practice limited warranty coverage to defects located strictly within the claiming corporation’s boundaries. By contrast, the Court endorsed the LAT’s conclusion that a partial repair, in this circumstance, would be “absurd” and ineffective because the garage is an integrated structure whose components work together to provide stability. Repairing only YRSCC 1284’s portion of the garage would leave the rest of the structure unstable, meaning the underlying problem would remain and the major structural defect would not actually be fixed.
The decision therefore signals that where a structural system is indivisible and functions as one integrated whole – and where fixing only part of it would not actually resolve the problem – Tarion can be required to cover the cost of repairing the entire structure. This may be the case even if some of the repairs take place in areas owned by other corporations, because that is the only practical way to fully and safely correct the defect. For communities with shared parking garages or podium slabs, this represents a meaningful expansion of warranty coverage.
- MSDs Must Still Materialize Within Seven Years – But they Do Not Need to Be Catastrophic
Allegra argued that the LAT had effectively extended Tarion’s seven‑year MSD warranty by treating future or potential deterioration as a present defect. The Court rejected that argument and clarified an important point: for an MSD claim to succeed, the defect must appear within the seven‑year period, but it does not need to be dramatic or catastrophic. Under Tarion’s “function test,” a defect qualifies as an MSD if it is already materially affecting the ability of a structural element to perform its load‑bearing function over its normal service life. In other words, the structure does not need to be on the brink of failure for the warranty to apply.
Here, the Tribunal accepted expert evidence that the garage’s suspended slabs, perimeter walls, and entrance ramp were already compromised within the warranty period. The use of a construction joint—rather than the continuous expansion joint originally designed—was causing cracking, water penetration, and early concrete deterioration that were already affecting structural performance. The Court has upheld the Tribunal’s finding and reiterated that deterioration that appears within the seven years does not need to be dramatic, sudden, or catastrophic in order to qualify for an MSD claim. It does not require a collapsing slab or a visibly failing column. What matters is whether, within the warranty period, the defect is already materially affecting the structure’s ability to carry loads or perform over its ordinary service life. Even early‑stage deterioration can meet this threshold if it signals a compromise in structural performance.
The Tribunal and the Divisional Court also dismissed the suggestion that poor maintenance by YRSCC 1284 caused these issues. The underlying problem stemmed from how the garage was designed and built, not from any failure by the corporation to maintain it.
- The Ontario Building Code is Informative – But Not Determinative of Warrantable Defect Findings
A key issue on appeal was whether compliance with the Ontario Building Code (“OBC”) shields a builder from an MSD finding. Allegra argued that because the OBC permits the use of construction joints, the LAT erred in finding that the absence of a continuous expansion joint constituted a defect.
Both the LAT and the Divisional Court rejected that argument. The decision emphasizes that the OBC sets minimum construction standards, not industry best practices. While the Code may inform the analysis, warranty liability ultimately turns on whether the work meets the statutory warranty standard — which requires considering both structural performance and prevailing engineering norms.
Here, three of the five expert engineering witnesses testified that using construction joints instead of a continuous expansion joint for a structure of this scale was atypical and fell below industry expectations. That evidence supported the finding of an MSD even if the Builder technically complied with minimum OCB code requirements. This clarification is important: OBC compliance does not immunize a developer from liability where the work nonetheless results in major structural defects under Tarion’s function test.
Implications Beyond MSDs: What About First-Year and Second-Year Warranty Coverage?
The Allegra decision raises an important follow‑up question for performance auditors and condominium corporations: does this expanded approach to shared‑facility coverage apply only to MSD claims, or could it also affect first‑ and second‑year warranty items?
While Allegra was strictly an MSD case, its reasoning has broader implications. Tarion historically required corporations to limit first‑ and second‑year performance‑audit claims to defects located within their own deeded common elements. Traditionally, corporations and their auditors approached shared-facility components – such as central plants, garages, mechanical rooms, or podium slabs – by focusing their claims on defects within their own property boundaries, even when those defects related to larger, interconnected systems.
But Allegra signals that this strict boundary‑based model is no longer tenable where a defect in an integrated system cannot be meaningfully repaired unless the entire system is addressed. The Court affirmed that Tarion must fund the full cost of repairs where partial repair would be “absurd” or ineffective, even if some of the work occurs on property owned by other entities.
Whether Tarion will attempt to confine this principle to MSD claims remains to be seen. However, Allegra makes a clear statement that warranty entitlements must be interpreted in a practical, functional way, especially for interconnected building systems. That raises legitimate questions for shared building components.
Given this uncertainty, performance auditors may need to rethink how they approach shared facilities. At a minimum, auditors should clearly identify the limits of their review, so their client understands. In light of this case, they should potentially offer to extend the claim to cover shared facilities outside the corporation’s boundaries, in which case their scope should:
- Identify all shared components servicing the claimant corporation;
- Assess whether defects in those components affect the Corporation’s performance audit rights; and,
- Consider making protective claims where the system and/or component is integrated and defects cannot be isolated to one property boundary.
This will be an evolving area, but Allegra creates a foundation for broader arguments about how Tarion must treat shared-facility claims across the warranty lifecycle – not only for MSDs.
Taken together, the Court’s ruling in Allegra marks a meaningful shift toward a more practical, system‑wide approach to warranty coverage—one that corporations, auditors, and industry professionals will need to keep front‑of‑mind as they navigate Tarion claims going forward.