10.1 Comprehensive Form (IBC 1155) All-Risks Structure

Key Takeaways

  • The IBC Comprehensive Homeowners Form (IBC 1155) provides 'All Risks' coverage across Coverage A (Dwelling Building), Coverage B (Detached Private Structures), and Coverage C (Personal Property / Contents), representing the broadest habitational protection available in Canada.
  • Under the all-risks doctrine, the reverse onus of proof applies: the insured only bears the prima facie burden of demonstrating fortuitous physical loss or damage during the policy period, shifting the full legal burden onto the insurer to prove that the loss falls squarely within an explicit exclusion.
  • IBC 1155 provides crucial coverage advantages unavailable in named perils forms, including mysterious disappearance of personal property, accidental breakage of fragile articles (such as crystal or statuary), accidental paint or beverage spills on carpets and furniture, and contents damaged during residential moves.
  • Core all-risks exclusions under IBC 1155 include wear and tear, gradual deterioration, marring, scratching, mechanical breakdown, latent defect, rust, rot, vermin, rodents, insects, bats, raccoons, earth movement, settling, intentional acts of an insured, and war or nuclear hazards.
  • The Comprehensive Form may be written with a Single Limit of Insurance bundling Coverages A through D into one aggregate pool, with property claims settled on a Replacement Cost basis provided repairs are executed with reasonable dispatch on the same or adjacent site.
Last updated: September 2026

10.1 Comprehensive Form (IBC 1155) All-Risks Structure

Key Focus: The Insurance Bureau of Canada (IBC) Comprehensive Homeowners Form (IBC 1155) is the most protective habitational property policy available in Ontario personal lines insurance. Unlike named-perils policies that only cover enumerated losses, IBC 1155 provides "All Risks" coverage on both the physical real estate structures (Coverage A & B) and personal property (Coverage C). Insurance brokers preparing for the RIBO Level 1 examination must master the legal doctrine of all-risks coverage, the procedural mechanics of the reverse onus of proof, distinct coverage advantages like mysterious disappearance and accidental breakage, standard policy exclusions, and the operation of single limits and replacement cost settlement.


The Architecture of the IBC Comprehensive Form (IBC 1155)

In Canada, habitational property insurance forms are standardized by the Insurance Bureau of Canada (IBC). The Comprehensive Homeowners Form (IBC 1155) is designed as an integrated package combining property and legal liability protection into a single modular contract. Section I of the form is divided into four interconnected property coverage sections:

┌────────────────────────────────────────────────────────┐
│         IBC 1155 SECTION I: PROPERTY COVERAGES         │
├──────────────────────────┬─────────────────────────────┤
│ Coverage A: Dwelling     │ Insured on an ALL RISKS     │
│ Building                 │ basis subject to exclusions │
├──────────────────────────┼─────────────────────────────┤
│ Coverage B: Detached     │ Insured on an ALL RISKS     │
│ Private Structures       │ basis subject to exclusions │
├──────────────────────────┼─────────────────────────────┤
│ Coverage C: Personal     │ Insured on an ALL RISKS     │
│ Property (Contents)      │ basis subject to exclusions │
├──────────────────────────┼─────────────────────────────┤
│ Coverage D: Additional   │ Consequential loss arising  │
│ Living Expenses (ALE)    │ from covered property loss  │
└──────────────────────────┴─────────────────────────────┘

Under IBC 1155, the insuring agreement undertakes to indemnify the insured against all risks of direct physical loss or damage to insured property from any external cause, except as otherwise excluded. This universal "All Risks" scope applies equally across the primary residence (Coverage A), outbuildings such as detached garages, gazebos, and sheds (Coverage B), and personal belongings worldwide (Coverage C).


The Legal Doctrine of All Risks and Fortuity

The phrase "All Risks" is a recognized legal term of art; it does not mean that the policy covers every conceivable loss. Instead, Canadian courts have established two foundational criteria that define all-risks coverage:

  1. Fortuity (The Element of Chance): The loss or damage must be fortuitous. As articulated in the classic English House of Lords authority British and Foreign Marine Insurance Co. v. Gaunt [1921] and firmly adopted into Canadian jurisprudence, a "risk" involves an event that is accidental, unforeseen, and unexpected. Damage that is inevitable—such as natural wear and tear, ordinary depreciation, or deliberate self-inflicted damage—lacks fortuity and cannot be an insured risk.
  2. External Cause: The damage must originate from an external fortuitous event rather than from the internal nature, inherent vice, or structural decay of the insured object itself.
All Risks Scope = Direct Physical Loss + Fortuitous Event + External Cause - Explicit Policy Exclusions

The Reverse Onus of Proof (The Evidentiary Shift)

The most significant legal distinction between an All-Risks policy (IBC 1155) and a Named-Perils policy (IBC 1151) lies in the burden of proof (onus of proof) during claims litigation.

Named Perils vs. All Risks Burden of Proof

  • In Named Perils (IBC 1151): The insured carries the strict legal burden of proving, on a balance of probabilities, that the loss was directly and proximately caused by one of the specific perils enumerated in the contract (e.g., proving that a structural collapse was caused by an explosion rather than rot). If the cause of loss is mysterious or unproven, the claim fails.
  • In All Risks (IBC 1155): The insured bears only a lightweight prima facie burden of proof. The insured must merely prove that:
    1. They hold an insurable interest in the property;
    2. The property was physically lost or damaged; and
    3. The loss occurred during the policy period and was fortuitous.

Once the insured establishes these three basic facts, the reverse onus of proof shifts the entire legal burden onto the insurer. To deny coverage, the insurer must affirmatively prove, on a balance of probabilities, that the loss was caused by an event that falls squarely within an explicit, unambiguous policy exclusion (MacDonald v. Fine).

Exam Key Concept: Under IBC 1155, if the true cause of a fortuitous loss remains unexplained, undetermined, or doubtful following a forensic investigation, the claim must be paid in full. Any evidentiary ambiguity is resolved against the insurer because the insurer failed to substantiate an applicable exclusion.


Exclusive Coverage Advantages of the Comprehensive Form

Because Coverage C (Personal Property) is insured on an all-risks basis under IBC 1155, policyholders enjoy protections that are completely absent in named-perils forms:

1. Mysterious Disappearance

Under named perils, personal property is covered against theft, which legally requires evidence of felonious taking, forced entry, or unlawful deprivation. If an insured misplaces a gold bracelet, expensive camera, or laptop while traveling, named perils contracts deny the claim because "unexplained disappearance" is not an insured peril. Under IBC 1155, mysterious disappearance is fully covered because the loss is fortuitous and unexplained loss is not an excluded peril for personal property (subject to deductible and specific special limits for jewelry).

2. Accidental Breakage of Fragile Articles

Under named perils, fragile personal belongings (such as fine bone china, porcelain figurines, crystal glassware, marble sculptures, and glass tabletops) are protected only if broken by an enumerated peril like fire, lightning, or vehicle impact. If a homeowner accidentally drops a crystal vase or knocks over a porcelain heirloom while dusting, named perils forms exclude the loss. Under IBC 1155, accidental breakage is covered as an unexcluded fortuitous event.

3. Accidental Spills and Stains

If an insured accidentally tips over a can of oil-based paint, dark wood stain, or a glass of red wine onto a high-value Persian area rug, an imported sofa, or dining chairs, the resulting ruin is covered under IBC 1155. In contrast, named-perils contracts reject this claim because accidental staining is not an enumerated peril.

4. Personal Property in Transit and Moving

Under IBC 1155, personal property is covered while in transit worldwide. If furniture shifts inside a moving van during a residential move and sustains crushing, breakage, or scratching from sudden vehicular maneuvers, IBC 1155 responds to the contents damage, whereas named perils forms restrict transit coverage to collisions or derailments of the conveying commercial vehicle.


Core Standard Exclusions in the Comprehensive Form

To keep habitational premiums affordable and prevent the assumption of uninsurable business or maintenance hazards, IBC 1155 contains standard absolute and qualified exclusions:

Exclusion CategorySpecific Excluded Conditions / HazardsUnderwriting Rationale
Normal Wear & TearMarring, scratching, chipping, gradual deterioration, rust, corrosion, wet or dry rot, mold, fungi, dampness of atmosphere, and extremes of temperatureInevitable physical processes that lack fortuity; represent routine homeowner maintenance duties
Mechanical & ElectricalMechanical breakdown, internal electrical arcing or short-circuiting (unless fire or explosion ensues)Operational machinery failure; insurance does not act as an extended warranty
Defective Design & Inherent ViceLatent defects, faulty materials, faulty design, faulty workmanship, and inherent vice (natural internal degradation)Pre-existing structural flaws must be borne by manufacturers and contractors, not habitational insurers
Pest and Animal InfestationBirds, vermin, rodents (mice, rats, squirrels), insects (termites, bedbugs), bats, raccoons, and domestic petsPreventable maintenance hazards; infestations develop over time rather than occurring as sudden accidents
Earth MovementEarthquake, landslide, snowslide, mudflow, volcanic eruption, earth sinking, or risingCatastrophic geographic perils; requires specialized underwriting endorsements (e.g., Earthquake Rider)
Settling & Soil MovementSettling, expansion, contraction, moving, shifting, bulging, or cracking of pavements, foundations, walls, or floorsInevitable soil interaction and compaction over time; standard building maintenance risk
Water Perils (Base Form)Overland flood, surface water runoff, storm surge, waves, ground water seepage through basement slabs, and sewer backupHigh-frequency catastrophic perils; standard base policy covers plumbing burst, but flood and sewer require endorsements
Intentional & Criminal ActsAny intentional or criminal act committed by or at the direction of any insured named in the declarationsEliminates moral hazard; courts prohibit wrongdoers from profiting from intentional wrongdoing
War, Nuclear & TerrorismHostile warlike action, insurrection, nuclear reaction, radioactive contamination, and acts of terrorismUninsurable macro-catastrophic perils threatening total solvency of the insurance industry

Policy Architecture: Single Limit vs. Itemized Limits

Standard habitational policies issue coverage using itemized sub-limits expressed as fixed percentages of Coverage A (Dwelling Building):

  • Coverage A: 100% of assessed dwelling replacement cost (e.g., $600,000)
  • Coverage B: 10% of Coverage A ($60,000 for detached garages/sheds)
  • Coverage C: 70% to 80% of Coverage A ($420,000 to $480,000 for contents)
  • Coverage D: 20% of Coverage A ($120,000 for additional living expenses)

The Single Limit Endorsement

Many insurers issuing the IBC 1155 form offer a Single Limit of Insurance. Under this structure, all four coverage sections are aggregated into one unified lump-sum limit:

Single Limit=Coverage A+Coverage B+Coverage C+Coverage D\text{Single Limit} = \text{Coverage A} + \text{Coverage B} + \text{Coverage C} + \text{Coverage D} Single Limit=$600,000+$60,000+$480,000+$120,000=$1,260,000\text{Single Limit} = \$600,000 + \$60,000 + \$480,000 + \$120,000 = \$1,260,000

In a catastrophic loss (such as a total fire destroying the home and all contents), the insured is not restricted by rigid percentage ceilings. If actual personal property losses reach $550,000 while building reconstruction requires only $550,000, the single limit absorbs the overage without penalizing the policyholder.


Basis of Settlement: Replacement Cost Endorsement

IBC 1155 policies routinely incorporate a Replacement Cost Endorsement on both the building and personal property. Under this settlement clause, the insurer pays the cost to repair, rebuild, or replace damaged property with materials of like kind and quality, without deducting physical depreciation.

Replacement Cost = Full Reconstruction or Replacement Cost
(Zero Deduction for Age, Wear, Tear, or Depreciation)

Mandatory Preconditions for Replacement Cost Settlement

  1. Actual Repair or Replacement: The insured must actually repair or replace the property. If the insured chooses not to rebuild and demands a cash payout, settlement strictly reverts to Actual Cash Value (ACV).
  2. Reasonable Dispatch: The work must be executed promptly and with due diligence.
  3. Same or Adjacent Site: Rebuilding must occur on the same premises or an adjacent site for the same occupancy purpose.
  4. Personal Property Replacement: Contents must be replaced with items of like kind and quality within a reasonable timeframe. Specialized items (antiques, fine art, collector items) that cannot be duplicated are settled on an agreed value or ACV basis.
Loading diagram...
All-Risks Burden of Proof Framework (IBC 1155)
Test Your Knowledge

A homeowner insured under an IBC 1155 Comprehensive Form returns from a vacation to discover that an original, custom-carved mahogany mantelpiece attached to the living room fireplace has suffered extensive, splintering structural fracture. A professional claims adjuster inspects the damage and cannot find any evidence of impact, settling, vermin, dry rot, or intentional tampering, but hypothesizes that unseen residual tension within the wood may have caused it to crack. The insurer denies the claim, asserting that the homeowner failed to prove the exact cause of loss. Under Canadian insurance law and the all-risks doctrine, how should this claim be resolved?

A
B
C
D
Test Your Knowledge

A client covered under an IBC 1155 Comprehensive Form travels from Toronto to an Ottawa hotel for a weekend conference. While unpacking in the hotel room, the client discovers that a custom platinum bracelet valued at $4,500, which was packed inside their carry-on luggage, is missing. There are no signs of luggage tampering, forced entry, or witnesses to a theft, and the client cannot determine when or where the bracelet was lost. How will the insurer handle this claim?

A
B
C
D
Test Your Knowledge

An insurance broker is reviewing two separate claims submitted by a homeowner insured under an IBC 1155 Comprehensive Form: Claim 1 involves $8,500 in structural damage caused by raccoons nesting in the attic and gnawing through electrical conduit and roof trusses. Claim 2 involves $3,200 in damage caused when the homeowner accidentally knocked over a gallon of dark walnut wood stain, ruining an imported dining room table and matching chairs. How will the insurer adjust these two claims?

A
B
C
D