How Anchor Tenant Exclusions Inflate Your Retail CAM Bill

If you're an in-line retail tenant in a shopping center with a grocery store, department store, or big-box anchor, your CAM bill almost certainly reflects the anchor exclusion — even if no one told you about it.

The anchor exclusion is a negotiated provision in most anchor tenant leases that exempts the anchor from contributing to the shared CAM pool. In exchange for bringing traffic to the center, major anchors often pay reduced or zero CAM — while contributing 30% to 60% of the property's gross leasable area. The math consequence: when a tenant occupying 40% of the center pays nothing, the remaining 60% of tenants pay 100% of costs. Each in-line tenant's effective cost per square foot goes up.

That's the intended structure — when it's properly documented in your lease. The overcharge occurs when the denominator in your pro-rata calculation is adjusted to exclude the anchor's square footage without your lease explicitly authorizing that adjustment. You end up with a larger percentage than you agreed to, paying more than your contract requires.

The Denominator Problem: GLA vs. GLOA

Your pro-rata share is calculated as your square footage divided by some measure of the total property's square footage. The question is: which total?

Gross Leasable Area (GLA): All leasable square footage in the center, including anchors, regardless of whether each tenant pays CAM. If your lease uses GLA, the anchor's square footage is in the denominator even if the anchor is excluded from the cost pool.

Gross Leasable Occupied Area (GLOA): Only the square footage of tenants actually occupying and (usually) paying into the shared pool. If your lease uses GLOA, the anchor's square footage is excluded from the denominator.

Here's how the same property looks under each method:

Same center, same tenant, same square footage. The GLA method produces $25,000; the GLOA method produces $62,500 — a $37,500 difference driven entirely by whether the anchor's square footage is in the denominator.

If your lease defines pro-rata share using GLA, the landlord cannot switch to GLOA without a lease amendment. That switch, if unauthorized, produces an overcharge of $37,500 annually in this example.

How to Check Which Method Your Lease Uses

1. Find the pro-rata definition. Look in Article 1 (Definitions) or the CAM pass-through article, often Article 4 or 5. The definition will say something like "Tenant's Proportionate Share means a fraction, the numerator of which is the rentable square footage of the Premises, and the denominator of which is..."

2. Read the denominator definition carefully. Look for one of these phrases:

   • "...total rentable square footage of the Building" — GLA method
   • "...total rentable square footage occupied by tenants" — GLOA method
   • "...Gross Leasable Area of the Shopping Center" — GLA method
   • "...as adjusted from time to time to reflect occupancy" — GLOA-adjacent, creates flexibility

3. Compare against the reconciliation. The reconciliation statement should show the denominator used. If it shows a number smaller than the total GLA of the property — say, 80,000 SF in a property you know to be 140,000 SF — ask why.

When the Anchor Exclusion Is Legitimate

To be clear: anchor exclusions are not inherently an overcharge. They are a common and well-established deal structure. The issue is whether your lease authorized the specific denominator the landlord applied.

Legitimate anchor exclusion structure (from your perspective as an in-line tenant):

• Your lease uses GLA in the pro-rata definition
• The anchor exclusion is mentioned elsewhere in the lease or a lease amendment
• The denominator in your reconciliation matches GLA (includes anchor SF)
• The anchor simply doesn't contribute to the CAM pool — that's the anchor's deal, not yours

In this case, you're paying your correct GLA-based share of the full CAM pool. The fact that the anchor pays nothing is the landlord's economic arrangement with the anchor, not your obligation.

Problematic anchor exclusion structure:

• Your lease uses GLA in the pro-rata definition
• The landlord calculates your pro-rata share using GLOA (a denominator that excludes the anchor)
• You end up with a higher percentage than your lease specifies
• The difference between your GLA percentage and the GLOA percentage is the overcharge

What courts have held

Texas appellate courts applying the plain-language rule have consistently held that when a lease defines the pro-rata denominator as GLA, the landlord cannot substitute GLOA or any other smaller measure without an amendment. The Shopping Center Law Outline (International Council of Shopping Centers) identifies denominator substitution as one of the five most litigated CAM provisions in retail leases. Courts presented with a GLA-defined lease and a reconciliation using a smaller denominator have ordered recalculation using the contractual definition, with refunds for all open reconciliation periods.

The principle applies regardless of which party the tenant is, which state the property is in, or how the anchor exclusion came to exist. The controlling question is always what the lease says the denominator should be.

What to Do If You Suspect an Anchor Exclusion Error

Step 1: Locate your pro-rata definition and write down the denominator specification.

Step 2: Pull the most recent reconciliation and find the denominator used (often in a footnote or the methodology summary on the last page).

Step 3: Compare. If the reconciliation denominator is smaller than your lease's definition requires, you have the basis for an audit request.

Step 4: Calculate the overcharge. Apply your lease's correct denominator to the total CAM pool each year. The difference between the correct amount and what you paid is the overcharge per year. Multiply by the lookback period to get the recoverable amount.

Step 5: Send a written audit request under your lease's audit rights clause. The request should ask for the landlord's pro-rata calculation worksheet and the current rent roll showing all tenant square footages.

Run a free scan on your retail CAM charges — the analysis extracts your pro-rata definition from the lease and compares it against the denominator in the reconciliation automatically.

Frequently Asked Questions

If the anchor exclusion is in my lease, does that mean I agreed to the GLOA method?

Only if your lease explicitly says that the pro-rata denominator excludes anchor tenants or uses GLOA. Many leases include anchor exclusion language in the anchor tenant's side of the deal — which doesn't automatically change your lease's denominator definition. Read your own lease's pro-rata definition, not just the center-wide exclusion provisions.

What if the anchor moved out mid-year? Does the denominator change?

This depends on your lease's pro-rata definition. Under GLA, the anchor's space remains in the denominator even if vacant (because GLA is the total leasable area, not the occupied area). Under GLOA, a vacancy reduces the denominator and inflates occupied tenants' shares. If the anchor leaves and the denominator suddenly shrinks, check whether your lease authorizes that adjustment.

Can I negotiate out of a GLOA denominator if I'm signing a new lease?

Yes. Insist on a GLA denominator. Most in-line tenants in anchored centers with real bargaining power can negotiate GLA definitions, because the difference compounds over a 5–10 year lease term. A GLOA clause in a 10-year lease at a center with a 15% anchor exclusion can cost six figures in overcharges at a mid-size retailer scale.

How common is this error?

The anchor exclusion denominator issue appears regularly in CAM disputes. The Shopping Center Law Outline (International Council of Shopping Centers) identifies it as one of the top five disputed CAM provisions in retail leases. Any in-line tenant in a center with a non-contributing anchor should verify which denominator their lease requires.

Related Resources

• Retail & Shopping Center CAM Overcharges: Full Guide
• Pro-Rata Share: GLA vs. GLOA
• CAM Proration Errors
• CAM Overcharge Detection Playbook
• CAM Dispute Guide

CamAudit is a document analysis and automation tool. The analysis described on this page does not constitute legal advice. Consult a licensed attorney before sending any legal correspondence to your landlord.