What Is a CAM Cross-Check? (And How It Differs From a Lease Audit)
A CAM cross-check is an independent verification of a commercial landlord's CAM (Common Area Maintenance) and operating-cost charges against outside public data — rather than only against the landlord's own reconciliation statement. Every line on that statement multiplies into real dollars off your bottom line, and according to Tango Analytics (2023) roughly 40% of CAM reconciliations contain material errors — so the question isn't whether the statement could be wrong, it's whether you check it against something the landlord doesn't control. A cross-check is the fast first check you run before, or instead of, a full audit. This post defines the category and shows exactly how it differs from a traditional lease audit.
What is a CAM cross-check?
A CAM cross-check is an independent verification of a commercial landlord's CAM and operating-cost charges against outside public data — rather than only against the landlord's own reconciliation statement. Instead of trusting the statement, you check its key numbers against records the landlord doesn't control: county Gross Building Area records for the pro-rata denominator, the landlord's public REIT/SEC filings for self-reported building size, and BOMA benchmark ranges for cost reasonableness. That outside-data step is what makes it a cross-check and not just a re-read of the statement. A re-read can only catch arithmetic mistakes inside the four corners of the document; a cross-check catches the bigger problem — when the document's own inputs (like the building total) are wrong to begin with.
How is a CAM cross-check different from a lease audit?
A CAM cross-check is the fast, independent, public-data first check; a lease audit (also called a CAM audit) is the deep, document-heavy, fee-based engagement that follows if the cross-check turns up something. A traditional lease audit typically runs roughly $2,500–$15,000 per property as a flat fee, or 25–33% of any recovery on contingency — and contingency firms generally won't take small or single-location tenants because the recovery is too small to be worth their time. That leaves most independent and franchise tenants with no first-pass option at all, which is the gap a cross-check fills: it costs nothing to start, uses public data instead of a stack of requested documents, and tells you in minutes whether a full audit is even worth pursuing. Think of the cross-check as the screening test and the audit as the deep diagnostic — you don't pay for the diagnostic until the screen says you should.
What public data does a cross-check use?
A CAM cross-check uses three independent public sources: county Gross Building Area (GBA/GFA) records for the building-size denominator that drives your pro-rata share, the landlord's own REIT/SEC filings for the building square footage it has reported to investors, and BOMA operating-cost benchmark ranges for whether the per-square-foot cost is reasonable. None of these requires the landlord's cooperation, which is the whole point. The county GBA is the highest-leverage of the three, because the denominator multiplies into every line item at once — your pro-rata share is your space divided by the building total, so understating that total inflates your bill quietly, year after year. The REIT filing is a second independent anchor: a building total on your statement smaller than the landlord's own investor disclosure is a self-contradiction. We walk through pulling each of these in verify your CAM with public records, and the glossary explains how GBA differs from net or leasable area so you don't compare the wrong figures.
When should you cross-check vs. order a full audit?
Cross-check first, almost always. A CAM cross-check is fast and free, so it's the natural triage step: it tells you whether the numbers even hint at a problem before you commit to the cost of a full lease audit. It also beats the dispute deadline — most leases give you a limited right-to-review-records window after a reconciliation, and a cross-check fits inside that window when a months-long audit might not. If the cross-check surfaces a material gap, that's your signal that a deeper, document-level review or full audit may be worth the money. Before you decide either way, the free overpayment calculator helps you size the dollars at stake, so you only spend on an audit when the gap justifies it.
What does a cross-check flag?
A CAM cross-check surfaces potential red flags for review — never a determination of wrongdoing. The common ones are an inflated denominator (a building total smaller than the county GBA or the landlord's own REIT filing, which inflates everyone's pro-rata share), capital costs billed as operating expenses, gross-up errors in a partly vacant building, and management-fee creep. Each is informational and meant for human review: you take the flag and the public record behind it to your own attorney or auditor, who can advise on next steps. A cross-check doesn't conclude that you've been overcharged — it shows you where the statement and the public record disagree, so a professional can decide what, if anything, to do about it.
The bottom line: a CAM cross-check is a distinct, named first step — independent, public-data-driven, fast, and free to start — and it's not the same thing as a lease audit. The cross-check tells you whether the audit is even worth it; run it first, beat your dispute deadline, and only pay for the deep dive once the public records say there's something to find.
Start the free CAM cross-check →
Informational only; not legal advice and not an audit or attest service. ReCAM is not a CPA firm and these services are not regulated by the Texas State Board of Public Accountancy. © ReCAM Technologies LLC.