Multi-unit property insurance: inspect the shared systems

Use dotted terms for definitions. You can also browse the glossary.

Before you decide

Unit count alone does not establish the right policy form.
Shared systems can interrupt several leases at once.
Schedule separate structures and uses explicitly.

Create a building schedule

For each structure record its address, construction, stories, units, occupied uses, roof and major systems. Add garages, laundry rooms, detached buildings and common amenities. A mailing address is not a complete property schedule. Ask the partner which structures and interests the proposed form actually includes.

Travelers describes commercial property protection for physical business assets and optional exposures. This does not establish a universal five-unit threshold. Eligibility depends on the insurer, program and property details; obtain a direct answer for your actual building.

Find shared points of failure

Inspect concentration within the property
Shared item	Operational question	Insurance question
Boiler or electrical service	How many units stop operating?	Breakdown, repair and income terms
Roof or central plumbing	Which units could be affected together?	Water, roof settlement and applicable deductible
Common stairs and walkways	Who inspects and fixes hazards?	Insured premises and liability activities
Leasing office or laundry	Who owns the contents and equipment?	Property definitions and scheduled values

Worked scenario: one boiler, six leases

Suppose a six-unit building has one heating plant. A failure may affect the entire rent roll even when only one piece of equipment needs repair. Build a continuity plan with qualified contractors and ask about the cause of breakdown and any corresponding income protection. A building-damage policy label does not answer that question.

For planning, list monthly rents separately, then identify which expenses continue during a disruption. Do not assume every dollar of gross rent is a payable insurance loss. Apply the proposed income wording to the scenario.

Close the schedule review

Reconcile units and uses against leases and inspection records.
Confirm ownership entities, manager role and lender interests.
Ask how per-building and shared limits or deductibles interact.
Update the schedule before an addition, conversion or newly acquired building.

Sources & scope

Travelers: Commercial property insurance
Carrier description of physical assets and optional exposures; not a universal unit-count eligibility boundary.
NAIC: Business interruption and businessowner policies
Updated June 25, 2026. General covered-event and income context; no universal eligibility or claim determination.

Sources checked October 24, 2026. General descriptions do not replace the policy, endorsements, declarations or an insurer’s coverage determination. Examples are hypothetical unless explicitly identified otherwise.

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