Korea-specific scope
This calculator models a Korean rental-property liability scenario in KRW using user-entered policy terms and Korean statutes checked on August 7, 2026.
It does not decide the landlord’s legal liability, classify a Korean special building, interpret a particular insurer’s wording, approve a claim, or recommend an insurance product.
Use the current policy schedule, endorsements, and aggregate-payment history rather than treating the example amounts as statutory or market-standard limits.
Why a landlord liability coverage-gap calculator matters
A leak, fire spread, falling facade element, stairway fall, lift incident, or parking-facility accident can create several losses at once.
A tenant or visitor may suffer bodily injury, a lower unit or neighbouring shop may sustain property damage, a tenant may claim temporary relocation or loss of use, and the landlord may incur counsel, expert, investigation, or adjustment cost.
The landlord may also need to repair the source in the insured building and absorb lost rent while the premises remain unusable.
A large headline per-occurrence limit does not answer whether all those amounts are protected.
Property damage and relocation may have smaller sublimits, a deductible may apply to every occurrence, defense cost may erode the occurrence and aggregate limits, and earlier claims may already have consumed part of the policy-period aggregate.
Own-property source repair and rental-income interruption may sit outside the basic liability section altogether.
Questions this model separates
- Projected insurance payment and landlord out-of-pocket for the first incident
- Policy-period payment and aggregate exhaustion when the same-size incident repeats
- Property and relocation sublimit gaps before the combined limit is reached
- Deductible capacity after protecting the landlord’s operating reserve
- Own-property, lost-rent, defense-cost, and cause-of-loss gaps that need separate review
The output is a policy-scenario arithmetic check, not a damages award or claim settlement.
It is most useful when the user copies exact terms from the policy and records a defensible maximum credible loss instead of relying on a national average.
What each input means
Third-party incident loss
Bodily injury can include estimated treatment, lost income, and damages for tenants or visitors.
Property damage can include tenant contents, the lower unit, an adjacent shop, or another person’s building and equipment.
Relocation or loss-of-use cost should be entered only as a liability scenario, not as an assumption that every accommodation charge is legally recoverable.
Policy limits and sublimits
Copy the per-occurrence combined limit and policy-period aggregate from the current schedule.
If property damage, tenant contents, relocation, a leak, or fire-spread liability has a smaller sublimit, enter that amount rather than the larger combined limit.
A zero sublimit deliberately models no payment for that item.
Deductible and defense cost
Check whether the deductible applies once per occurrence, separately by damage type, or differently by cause.
For defense cost, choose inside the limit, outside the limit, or not covered according to the policy and insurer confirmation.
The outside-limit choice is a simplified full-payment candidate for the entered defense amount; actual consent, necessity, counsel selection, and a separate defense cap still control.
Aggregate already used
Enter payments already charged against the same policy-period aggregate.
Do not combine a payment from a separate coverage part, a different policy period, or a reinstated aggregate without insurer confirmation.
When prior use equals or exceeds the entered aggregate, the model sets the remaining aggregate to zero rather than producing a negative amount.
Calculation order
- Separate total loss. Add bodily injury, third-party property damage, relocation or loss of use, defense cost, own-property source repair, lost rent, and another separate or excluded amount.
- Apply cause-of-loss coverage first. If the incident is excluded or unchecked, the current projected payment is zero and third-party loss plus defense cost becomes a cause-of-loss gap.
- Apply sublimits. Covered property damage is the lower of the entered loss and property sublimit, and relocation uses the same method.
- Apply one deductible. The simplified model subtracts the deductible once from covered bodily injury, property damage, and relocation loss without allowing a negative result.
- Apply the occurrence limit. Inside-limit defense cost joins post-deductible indemnity before the limit, while outside-limit defense cost remains separate and uncovered defense remains with the landlord.
- Apply the remaining aggregate last. The occurrence-limit payment candidate is multiplied by the stress incident count and compared with the aggregate remaining after prior payments.
Core simplified formulas
covered property = min(property loss, property sublimit)
post-deductible indemnity = max(covered indemnity − deductible, 0)
occurrence candidate = min(limit-subject claim, occurrence limit)
aggregate payment = min(occurrence candidate × incident count, aggregate − prior use)
annual out-of-pocket = total modelled loss × incident count − annual payment
Worked Korean leak example
The default scenario uses KRW 30 million of third-party property damage, KRW 5 million of relocation or loss-of-use loss, KRW 3 million of defense cost, KRW 8 million of own-property source repair, and KRW 4 million of lost rent.
The policy has a KRW 20 million property sublimit, KRW 5 million relocation sublimit, KRW 50 million occurrence limit, KRW 100 million aggregate, KRW 40 million of prior aggregate use, and a KRW 1 million deductible, with defense cost inside the limit.
Worked Korean landlord leak insurance coverage-gap example| Result | Amount | Meaning |
|---|
| Total modelled loss per incident | KRW 50,000,000 | Third-party loss, defense, own repair, and lost rent |
| Property sublimit gap | KRW 10,000,000 | KRW 30 million loss less the KRW 20 million sublimit |
| First-incident projected payment | KRW 27,000,000 | Covered sublimited loss less deductible plus inside-limit defense |
| First-incident landlord out-of-pocket | KRW 23,000,000 | Sublimit, deductible, own repair, and lost-rent amounts |
| Annual projected payment | KRW 54,000,000 | Two same-size incidents within the KRW 60 million remaining aggregate |
| Annual landlord out-of-pocket | KRW 46,000,000 | KRW 100 million annual modelled loss less projected payment |
| Modelled annual protection ratio | 54% | Projected annual policy payment divided by annual modelled loss |
| Reference annual aggregate | KRW 120,000,000 | Prior use plus the capacity-adjusted scenario, rounded by KRW 10 million |
Why the headline limit is not enough
The KRW 50 million occurrence limit appears large enough for a KRW 50 million total loss, but the smaller property sublimit creates a KRW 10 million gap first.
Another KRW 12 million of own-property repair and lost rent is kept outside the basic liability payment.
Reviewing only the combined limit would therefore understate the landlord’s cash exposure.
How to read each gap
Cause-of-loss gap
Check whether the incident is a covered hazard and whether known defects, intentional acts, ageing, mould, pollution, or construction work triggers an exclusion.
Property sublimit gap
Compare damage to a lower unit, tenant contents, and neighbouring property with the smallest applicable property sublimit.
Relocation sublimit gap
Confirm whether temporary accommodation, relocation, or loss of use is legally covered and subject to a separate amount or time cap.
Deductible gap
Check whether the deductible applies once or by item and whether it fits cash capacity after protected reserves.
Defense-cost gap
Confirm insurer consent, selected counsel, necessary-cost wording, inside-versus-outside-limit treatment, and aggregate erosion.
Aggregate gap
Check prior payments, reinstatement, shared aggregates across properties, and the policy definition of related occurrences.
Own-property gap
Review property, fire, water-leak, machinery, or another first-party section for source repair and own-building restoration.
Lost-rent gap
Review rental-income or business-interruption coverage, waiting period, indemnity period, and any vacancy condition.
Practical incident scenarios
Leak or pipe failure
Put lower-unit finishes, tenant contents, and legally assumed accommodation loss in the third-party fields.
Put detection, pipe replacement, waterproofing, and restoration of the landlord’s own premises in own-property source repair.
Do not assume that household personal liability, landlord premises liability, and water-leak property cover pay the same cost merely because their Korean product names sound similar.
Fire spreading beyond the rental premises
Separate tenant or visitor injury from neighbouring property damage, and keep the landlord’s building restoration and rent loss in separate fields.
Korean Act on Liability for Fire Caused by Negligence Article 3 allows a court to consider a reduction when the fire was not caused by gross negligence, but it supplies no automatic reduction percentage for this calculator.
A building classified as a special building requires a separate mandatory-insurance review.
Falling object, slip, lift, or parking incident
Installation, preservation, control, actual possession, and preventive steps may matter under Korean Civil Act Article 758.
The calculator does not allocate liability among the landlord, occupier, management entity, tenant, contractor, or another causal party.
Before that allocation is resolved, use a documented maximum amount that could be asserted against the landlord rather than treating the model as a legal apportionment.
Korean legal framework checked for 2026
Civil Act Articles 623, 750, and 758
Article 623 requires a lessor to deliver the leased object and maintain the condition necessary for the lessee’s use and benefit during the contract.
Article 750 states the general tort rule for unlawful intentional or negligent conduct causing damage to another.
Article 758 addresses damage caused by a defect in the installation or preservation of a structure, the occupier’s primary position, the owner’s position when the occupier exercised necessary care, and recourse against the responsible causal party.
The model assumes liability only for financial planning and does not decide any element of those provisions.
Commercial Act Articles 719, 720, and 724
Article 719 provides the basic liability-insurer obligation when the insured becomes liable to a third party because of an incident during the insurance period.
Article 720 addresses necessary judicial and non-judicial defense cost and separately addresses insurer-directed conduct.
Article 724(2) permits the injured third party to claim directly against the insurer within the insured amount, subject to the insurer’s defenses relating to the incident.
These provisions do not establish one universal occurrence limit, aggregate, sublimit, or deductible for every Korean landlord policy.
Special-building mandatory insurance is a separate gate
Korean Act on Indemnification of Fire-Caused Loss and Purchase of Insurance Policies Articles 4, 5, and 8 address a special-building owner’s fire liability, mandatory special-clause fire insurance, annual renewal, and insured-amount boundaries.
Enforcement Decree Article 2 lists many special-building categories, including apartments of 16 or more floors and, subject to stated exceptions, buildings of 11 or more floors.
The complete use, floor-area, floor-count, and exception rules must be checked for the actual building.
Korean special-building mandatory insurance boundaries under Enforcement Decree Article 5| Loss type | Enforcement Decree Article 5 boundary | Calculator treatment |
|---|
| Death | Up to KRW 150,000,000 per victim | Not applied automatically |
| Injury or permanent impairment | Attached Tables 1 and 2 limits | No grade determination |
| Property damage | Up to KRW 1,000,000,000 per incident | Use the entered policy amount only |
Do not generalise these figures
These are special-building mandatory-insurance boundaries, not recommended limits for every landlord liability policy.
The calculator does not classify a special building, verify mandatory purchase, apply injury grades, or certify statutory compliance.
Policy-renewal and incident checklist
- Correct owner, landlord entity, management entity, and additional insureds
- Correct property address and actual residential, retail, office, warehouse, or mixed use
- Exact Korean coverage section for premises-owner, landlord, fire-spread, or another liability exposure
- Leak, fire, falling object, lift, parking, construction, ageing, known-defect, mould, and pollution wording
- Occurrence and related-occurrence definition, deductible frequency, and every relevant sublimit
- Defense-cost consent, counsel, necessity, limit treatment, and aggregate erosion
- First-party property, machinery, water leak, fire, rental-income, and interruption sections
- Any special-building, multi-use-business, contract, or lender insurance requirement
- Prior aggregate payments, reinstatement, and whether multiple properties share one aggregate
- Incident evidence process for photographs, inspection logs, repair notices, quotations, and receipts
Interpretation tips and limitations
Change one term at a time
Enter the current policy first, then change only one sublimit, deductible, occurrence limit, or aggregate.
This shows which term actually reduces the out-of-pocket result before comparing premium quotations.
Protect operating cash
A larger deductible may reduce premium but still be unaffordable after debt service, tax, planned repairs, and essential living or operating cash are reserved.
The capacity ceiling uses the lowest of available liquidity, budget per stress incident, and third-party liability loss.
Payment is not liability
The projected payment assumes liability and covered loss for scenario planning.
Actual causation, fault, comparative negligence, damages evidence, exclusion, recourse, settlement, and litigation can change both liability and payment.
Keep written policy answers
The same premium can buy materially different sublimits, defense wording, retroactive treatment, territory, and exclusions.
Keep insurer or intermediary answers with the renewal date and policy number, then confirm that the final schedule and endorsements reflect them.
Frequently asked questions
Does a large occurrence limit mean the loss is fully insured
Not necessarily.
An excluded cause can produce no payment, and a property or relocation sublimit, deductible, inside-limit defense cost, or depleted aggregate may create a gap before the headline limit helps.
Is repair of the leaking pipe automatically paid by landlord liability insurance
Do not assume so.
Basic liability coverage focuses on legal liability to a third party, while source repair and own-building restoration may require a first-party property, water-leak, machinery, or another endorsement.
Why are there three defense-cost treatments
Korean Commercial Act Article 720 addresses necessary defense cost, but policy consent, insurer direction, scope, and limit treatment still require contract review.
Outside the limit is therefore a simplified scenario, not a promise that every entered legal expense will be reimbursed.
Is the reference limit an insurer recommendation
No.
It subtracts the entered deductible capacity from the modelled third-party loss and rounds the result by the selected KRW unit.
Property count, occupancy, contractual requirements, tail risk, premium, underwriting, and special-building rules require separate review.
Does a non-special building need no fire or liability insurance
Mandatory classification and risk protection are different questions.
A lease, loan covenant, business use, neighbouring exposure, or ordinary risk-management need may still justify property and liability coverage even when the special-building mandate does not apply.
Official sources and verification date
The National Law Information OPEN API current-law records and article text were checked directly on August 7, 2026.
The model records Korean Civil Act law ID 001706 and MST 284415, Commercial Act law ID 001702 and MST 272919, Act on Liability for Fire Caused by Negligence law ID 001244 and MST 93181, Fire Insurance Act law ID 000520 and MST 248933, and its Enforcement Decree law ID 005669 and MST 254165.
Recheck current statutes after an amendment, use or floor-count change, insurance renewal, endorsement change, or aggregate payment.
Audit the actual policy now
Place the policy schedule, endorsements, and current aggregate history beside the calculator and enter each term exactly.
Check cause-of-loss coverage and sublimits first, then compare deductible capacity and remaining aggregate.
Use the resulting questions with the insurer, intermediary, adjuster, or Korean legal adviser, while confirming final liability and payment from official documents and incident-specific facts.