CAM Gross-Up

Why gross-ups exist

Some operating costs move with occupancy and some do not. Janitorial service, common-area utilities tied to tenant space, and trash removal scale roughly with how many square feet are occupied and in use. A landscaping contract, a base management fee, and the building's insurance premium cost close to the same amount whether the building is 60% leased or fully leased.

That split creates a problem in a partially vacant building. If a landlord simply totaled actual costs and divided by actual occupied square footage, the tenants who are in the building would absorb an inflated share of the variable costs — costs that would have been higher across the board if the building were fuller, but that are instead concentrated on fewer payers. The gross-up clause corrects for this by asking a different question: what would the variable costs have been at a stabilized occupancy, and what is each tenant's share of that hypothetical, more representative number?

Worked example at 95% occupancy

Take a 100,000-square-foot building that was 70% occupied (70,000 SF) for the year. Variable operating costs actually incurred were $147,000. Fixed operating costs were $180,000. The lease stipulates a 95% gross-up occupancy — a common figure, though leases vary between 90% and 100%.

The gross-up formula scales the variable cost by the ratio of stipulated occupancy to actual occupancy: $147,000 × (95% ÷ 70%) = $199,500. That grossed-up variable figure is added to the unchanged fixed costs to build the CAM pool used for allocation: $199,500 + $180,000 = $379,500.

A tenant occupying 10,000 SF — a 10% pro-rata share of the 100,000-SF building — owes 10% of $379,500, or $37,950. Without the gross-up, that same tenant's 10% share of the actual $327,000 in costs would have been $32,700. The $5,250 difference is not a markup; it is the correction for the fact that a half-empty building understates what variable costs would run at normal occupancy, and only variable costs move through the calculation.

Where gross-up disputes come from

• ✓Applying gross-up to fixed costs: grossing up a fixed management fee or insurance premium inflates the bill with no cost basis — this is the single most common overbilling pattern tenant auditors catch
• ✓Ambiguous or missing stipulated occupancy: some leases set no fixed gross-up percentage and instead reference "fully occupied" or a range, leaving the actual rate to be negotiated at reconciliation
• ✓Wrong denominator for the ratio: the gross-up should scale against actual average occupancy for the period, not point-in-time occupancy at year-end, which can materially change the multiplier
• ✓No gross-up right at all: not every lease grants the landlord a gross-up clause — if the lease is silent, the landlord has no basis to scale costs, however empty the building was that year
• ✓Interaction with caps: a gross-up applied before a controllable-cost cap changes the capped number; applied after, it does not — the order matters and is rarely spelled out clearly in the lease itself

Why this belongs in the abstract, not just the reconciliation statement

The gross-up right, its stipulated percentage, and which cost categories it applies to are lease terms set at signing — usually a single paragraph in the operating expense article — but they determine a real dollar swing every single year of the term. An abstract that captures "CAM: pro-rata" without recording the gross-up mechanics leaves the property manager to renegotiate the calculation from scratch at every reconciliation, or worse, to apply a default assumption that does not match what the lease actually says.

Because gross-up is a recovery-setup field in Yardi and MRI alike — it changes how the system compares estimated to actual charges at year-end — getting the stipulated percentage and its scope right in the abstract is what keeps the annual reconciliation a mechanical run instead of a dispute. Our specialists record the exact gross-up language, the stipulated occupancy, and which cost categories it covers, cited to the page it comes from, alongside the rest of the CAM recovery structure.