As a subtenant, you are especially vulnerable to CAM double-billing. The master tenant pays CAM to the landlord, and you pay your share to the master tenant. If the allocation is not carefully managed, you can end up paying CAM through your sublease and also having your space counted in the master tenant pro-rata share, effectively being charged twice for the same expenses.
TL;DR
Double-charged CAM can double your operating expense burden; verifying the allocation protects you from paying your share twice.
Who this is for
Subtenants in a commercial sublease who suspect they are paying CAM charges that overlap with what the master tenant already pays to the landlord, resulting in double billing for the same expenses.
Who this is not for
Direct tenants with a lease signed directly with the building owner, or subtenants whose sublease explicitly defines a fixed CAM contribution not tied to the master lease reconciliation.
Pro-Rata Share Error
CAMAudit checks whether your subleased square footage is being counted in both the master tenant pro-rata calculation and your sublease allocation, which produces a double charge.
Excluded Service Charges
The scan verifies that charges passed through to you under the sublease are actually recoverable under the master lease and not charges the master tenant is responsible for absorbing.
Management Fee Overcharge
CAMAudit checks whether the master tenant is adding a management or administrative fee on top of the CAM pass-through and whether your sublease permits that markup.
Upload two PDFs. 14 detection rules. Under 15 minutes. Free.
Next Best Step
Scenario pages should bridge from diagnosis into the dispute path and audit proof.
Use the audit process if you still need to validate the billing error.
Use the dispute playbook if the issue is already active.
Run the free audit once you are ready to quantify the overcharge.
Ready to skip the reading and document the overcharge directly?
Find My OverchargesNeed to extract lease terms before your audit?
A CAM audit is only as accurate as your lease data. lextract.io extracts 126 structured fields from any commercial lease PDF: CAM definitions, pro-rata share, caps, base year, and audit rights. So you have the exact terms your landlord is supposed to follow.
Go to lextract.ioThis page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.
