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The bill charges an insurance line. You are matching it to the lease, not shopping a policy. Your pen hovers over the line item for $1,872, and you set the printed CAM statement next to your lease to cross-reference clause language directly. No tabs, no extra open browser windows, just these two physical documents on your table for this 10 minute check.
Confirm covered property parameters
You first flip to the common area maintenance section of your lease to find the explicit list of what the landlord’s insurance policy is required to cover for CAM pass-through. Common inclusions are structural damage to shared building exteriors, shared hallway fixtures, parking lot paving, elevator maintenance coverage, and building-wide liability coverage for incidents that occur in common spaces. Exclusions you may find are coverage for tenant-specific improvements you made to your rented unit, personal property inside your space, or liability related to your own business operations or client interactions inside your leased area. You mark each included coverage type in the lease margin to cross-check against the itemized breakdown the landlord included with the CAM bill. If no breakdown is attached, you note that as a first point of follow-up before you approve any portion of the insurance line charge, as you have no way to verify the cost aligns with your contractual obligations without that supporting documentation.
Calculate your pro rata share allocation
Your lease explicitly states your pro rata share of all CAM costs, including insurance, is based on the ratio of your rented square footage to the total leasable square footage of the building. You pull the square footage numbers directly from the first page of your lease to avoid relying on the numbers printed on the CAM bill, which may include unoccupied space the landlord incorrectly passes through to active tenants, or exclude recently completed common area expansions that change the total leasable footprint. Illustrative example: If your space is 2,200 square feet and total leasable building space is 48,000 square feet, your pro rata share is 4.58%, meaning you only cover that percentage of the total eligible insurance cost for the building. You write this percentage on the top of your CAM bill in bright blue ink for easy reference as you move to the next check, so you do not have to flip back to the lease repeatedly during your review.
Cross-reference policy cost with line item charges
You ask the landlord for a copy of the most recent insurance premium declaration page if it is not already attached to the CAM bill, to verify the total annual cost of the policy eligible for CAM pass-through. You only include line items on the declaration page that match the covered property parameters you marked earlier in your lease, ignoring any add-ons that cover landlord-specific assets outside of shared building space, like their off-site administrative office property or commercial auto policies for their maintenance team vehicles. The table below lets you map eligible costs to your share to confirm the charged amount is accurate:
| Eligible Insurance Cost Category | Total Annual Premium | Your 4.58% Pro Rata Share |
|---|---|---|
| Building structure liability | $32,400 | $1,483.92 |
| Shared property damage coverage | $7,200 | $329.76 |
| Severe weather event rider | $1,200 | $54.96 |
If you add up your eligible share across all categories, the total you owe is $1,868.64, which is within $4 of the $1,872 charged on your bill, a variance small enough to be attributed to standard rounding practices across multiple tenants’ pro rata shares. If the variance was more than 1% of the total expected charge, you would flag it for follow-up to understand the source of the discrepancy.
Flag overcharges for formal follow-up
If you find a discrepancy between the amount you calculate you owe and the amount charged on the CAM bill, you draft a short, factual note to your property manager that outlines the specific mismatch between lease language, policy documentation, and the charged amount. You avoid speculative language about intentional overcharging, and instead attach copies of the relevant lease clauses and your calculation to make the review process as fast as possible for the property management team, who may be handling dozens of tenant accounts for the same building. You set a 10 business day reminder on your calendar to follow up if you do not receive a response or adjusted bill in that window, so the issue does not fall through the cracks before your next rent payment is due. If you use a lease tracking tool, you can log the discrepancy and attach supporting documentation for your records, and Lease Jacket is one option you can use for this type of organized record keeping.
Pause this work once you confirm alignment
Once you either confirm the charge aligns with your lease terms or send your follow-up note about a discrepancy, you set both documents aside in your dedicated lease file folder and move on to other tasks. You do not spend extra time reviewing other CAM line items right now, as this check is only focused on the insurance line to avoid scope creep that eats into your scheduled work time. You close any open tabs related to commercial insurance so you do not get pulled into unrelated research about policy options, since your only goal for this session was cross-referencing the existing charge to your signed lease terms. You do not need to take any additional action on this line item until you either receive a response from the property manager or hit your scheduled follow-up reminder.
Pull these documents again at quarterly CAM reconciliation
This is the next time you open this same page, when you are reviewing your quarterly CAM reconciliation statement at the end of each three month period. You will follow this exact same process to confirm the insurance line charge on each reconciliation matches the terms of your lease, even if the charge amount appears to be the same as the prior quarter. Insurance premiums can shift mid-policy if the landlord adds new coverage, files a claim that raises their rates, or adjusts shared building square footage counts when new tenants move in, so a consistent check every quarter prevents you from absorbing costs you are not contractually obligated to cover. You also use this quarterly check to compare any prior period adjustments on the reconciliation to the notes you kept from earlier reviews, to ensure any overcharges you flagged are correctly credited back to your account on future statements. You do not need to request a new copy of the insurance declaration page every quarter unless you see a more than 5% shift in the insurance line charge, which signals a change to the policy terms that require independent verification against your lease terms.