Multi-unit franchise operators spend considerable energy on cost reduction. Group purchasing for food, packaging, and supplies. Technology consolidation. Labor scheduling optimization. These are real wins that show up in EBITDA — and the franchisor's purchasing co-op often provides them at scale. A 3-unit operator who negotiates $8,000 in annual food cost savings through a cooperative has done meaningful work.
The problem is what happens on the other side of the same P&L. While food costs and supply costs are tracked closely, occupancy costs often receive a fraction of that scrutiny. The lease is signed, the monthly payment goes out, and the annual reconciliation arrives as a line item to pay. The assumption is that whatever the landlord says is correct.
That assumption is often wrong — and the cost of the error compounds across every location in the portfolio.
The Procurement Side of the Math
Group purchasing works because you are aggregating volume to reduce unit cost. A 3-unit operator might save:
- 2% on a $400,000 COGS line = $8,000 per year
- $1,500 per unit on technology licenses = $4,500 per year
- 1.5% on packaging across all locations = $3,000 per year
Total procurement savings: roughly $15,000 to $20,000 per year. This number is tracked. It shows up in food cost percentages. It is celebrated in franchisor presentations and operator newsletters.
The procurement team earns it. The work is real.
The Occupancy Side of the Math
Now look at what a 0.5% error in the pro-rata denominator does at a single location.
A tenant occupies 3,000 SF in a 45,000 SF shopping center. The lease says their pro-rata share is calculated based on total leasable area. The landlord's reconciliation uses 41,500 SF as the denominator — a dark anchor space is quietly excluded, making the remaining tenants' shares larger than they should be.
The correct pro-rata share: 3,000 / 45,000 = 6.67% The billed pro-rata share: 3,000 / 41,500 = 7.23%
On a $200,000 CAM pool, the correct share is $13,333. The billed share is $14,458.
That's $1,125 per year at one location from a single denominator error. Across 5 locations with similar structures, that's $5,625 per year. Over a 5-year lease term, that's $28,000 — without accounting for the fact that the CAM pool itself may also be growing.
And that's from a single, relatively small error. Management fee overcharges, capital expense pass-throughs, landlord overhead buried in administrative fees — any one of these can produce larger variances.
Why Procurement Gets Attention and Occupancy Doesn't
Food and supply costs change every quarter. Operators see the movement in their P&L in real time. The feedback loop is short.
Occupancy costs are stable month to month — the same estimate payment goes out each month — and then spike once a year when the true-up arrives. By the time the spike is visible, the window for detailed review may be closing. Most leases require tenants to dispute within 6-12 months of receiving the reconciliation, and many operators don't know that clock is running.
The other factor is confidence. Operators know their COGS intimately. They have comparables, they have market rates, they have benchmarks. CAM reconciliations are presented as professionally prepared documents from the property management firm. Challenging them feels technical and adversarial, even when the amounts are material.
Applying the Same Rigor to Both
The discipline that makes procurement savings real — tracking unit cost, benchmarking against comps, questioning variances, holding vendors accountable — applies equally to occupancy costs. The execution looks different, but the logic is the same.
Track CAM per square foot per location, annually. This is the occupancy equivalent of tracking food cost percentage. It lets you see whether one location's CAM is running materially above the portfolio average, which is the first signal that something may be worth reviewing.
Compare year-over-year changes. A 5-8% annual CAM increase is roughly consistent with inflation. A 25% increase in a single year needs an explanation. You do not need to know whether the increase is correct to know it requires scrutiny.
Know the audit window. Group purchasing agreements have renewal dates you track. Lease audit rights have expiration dates you should track with the same discipline. Once the window closes, the right to recover is gone permanently.
Apply the ROI test. Before a procurement initiative, you estimate the expected savings vs. the cost of the initiative. Apply the same test to occupancy review: if your CAM charges across five locations total $180,000 per year, a 3% error rate is $5,400. A review that costs $1,500-$2,000 across the portfolio has a clear return if an error of that magnitude exists. If there's no error, the review confirms you're being billed correctly — which also has value.
The Portfolio Effect
For a 5-location operator, the occupancy math scales quickly:
| Location | Annual CAM | Est. 3% Error | Error per Year |
|---|---|---|---|
| Store A | $38,000 | $1,140 | $1,140 |
| Store B | $52,000 | $1,560 | $1,560 |
| Store C | $29,000 | $870 | $870 |
| Store D | $41,000 | $1,230 | $1,230 |
| Store E | $35,000 | $1,050 | $1,050 |
| Total | $195,000 | $5,850/yr | $5,850/yr |
Over a 5-year lease term, a 3% error across this portfolio costs $29,250. That's before considering that some errors are not 3% but 10-15%, and that higher-CAM locations have larger absolute exposure.
The procurement team is tracking savings to the dollar. The occupancy review process should hold itself to the same standard.
Verification Action
Pull your CAM totals for each location for the most recent two years. Calculate CAM per square foot for each location. Identify the highest and lowest. If the range is more than 30% between your highest and lowest CAM/SF location (after controlling for market and property type), run those two locations through a CAM overcharge estimator to get an initial read on whether the variance is structural or potentially erroneous. The comparison takes 20 minutes and tells you where to focus first.
Frequently Asked Questions
Is a CAM overcharge something we can recover or just avoid going forward? If you're within the audit window (typically 6-12 months from reconciliation delivery), you can recover overpayments for that year. Prior years where the window has closed cannot be recovered retroactively. This is why timing matters: the sooner you review, the more recovery is available.
Does requesting backup documentation damage the landlord relationship? Requesting documentation is a lease right, not an accusation. Most property managers respond to professional documentation requests routinely. Framing it as a record-keeping review rather than a dispute usually keeps the relationship intact.
How do we prioritize which locations to review first? Start with the highest CAM total, the largest year-over-year increase, and any location where the audit window is closest to closing. Those three factors identify your highest-priority reviews.
Can we do this ourselves or do we need a CPA? Simple reviews — checking the pro-rata calculation, verifying that excluded categories match the lease — can be done by an operator who understands the lease. More complex reviews involving management fee methodology, gross-up calculations, or capital expense classification benefit from a CPA or auditor with NNN lease experience.
Do franchise systems typically share CAM benchmarks? Some systems publish CAM/SF benchmarks as part of their franchisee financial performance representation in the FDD. Many do not. If your system doesn't publish this, the FAC or franchisee association is the best channel for building a network-level benchmark from voluntarily shared data.
Run your reconciliation and lease through CAMAudit to check for these patterns against your specific lease terms.