Loss of rents is the quietest line on a landlord policy and one of the most commonly underinsured. It's the coverage that keeps the mortgage paid when a fire or a burst pipe takes a unit offline — and on most books, its limit is frozen at a rent roll from years ago.
How it works
When a covered peril makes a unit or building untenantable, loss of rents (called fair rental value on a dwelling form, or business income on a commercial one) pays the rent you would have collected during the repair period. Two conditions: the cause of loss has to be covered, and it pays only for the reasonable time it takes to restore the property.
Why it's almost always short
The limit is set when the policy is first written, then it rolls over at renewal, untouched, while rents climb. A limit set against a 2019 rent roll is meaningfully short of today's rents. When the claim comes, the landlord discovers the coverage caps out before the rebuild finishes — and pays the gap out of pocket. It's the cheapest underinsurance to fix and the most common one to find.
The period of indemnity decides everything
Two policies with the same dollar limit can pay very differently depending on the period of indemnity — how long the coverage will keep paying. Major NJ losses (fire, structural) routinely run 9–18 months once you factor adjustment, permits, and contractor scheduling. A 12-month cap can leave you short on a serious loss. And an extended period of indemnity covers the ramp after repairs finish, before the unit is re-leased at full occupancy.
How to keep it right
Set the limit against your current rent roll and a realistic worst-case rebuild time — and update it every renewal. On multifamily especially, where one loss can take multiple units' rent down at once, this is among the highest-leverage numbers on your policy. We re-check it every renewal so it tracks your actual rents.