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Recovery of past CAM overcharges depends on your specific lease terms, including any audit rights deadlines or ‘binding and conclusive’ provisions, and on applicable state law.

State statute of limitations periods apply to written contracts and range from 3 to 10 years. Your actual lookback window may be shorter based on your lease.

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I want to compare this year reconciliation to last year

Angel Campa, FounderCAMAudit
Last updated: April 2026

Year-over-year reconciliation comparison is one of the most effective ways to spot billing errors. Line items that spike, appear for the first time, or disappear and reappear are red flags. CAMAudit runs the comparison automatically across all 14 detection rules, highlighting exactly which charges changed and whether the changes comply with your lease provisions.

TL;DR

Comparing two or more years takes slightly more upload time but dramatically increases the accuracy of the audit by revealing trends and anomalies that a single-year review would miss.

Who this is for

Tenants who have multiple years of CAM reconciliation statements and want to identify year-over-year anomalies, new charges, or suspicious increases.

Who this is not for

Tenants in the first year of their lease with no prior reconciliation to compare against.

What CAMAudit Checks in This Scenario

Rule 6

CAM Cap Violation

Year-over-year comparison is essential for cap verification. CAMAudit calculates the maximum allowable increase from the prior year and flags any amount above the cap.

Rule 8

Controllable Expense Cap Overcharge

The scan separates controllable from uncontrollable expenses across both years and verifies that controllable expense growth stays within your lease cap.

Rule 7

Base Year Error

Comparing reconciliation years helps identify whether the base year amount has been modified or whether the year-over-year increase methodology has changed.

Rule 18

Estimated Payment True-Up Error

The scan compares estimated payment amounts and true-up calculations across years to flag inconsistencies in how the landlord reconciles estimates to actuals.

What to Do Next

  1. 1Gather reconciliation statements for at least two consecutive years, ideally three or more if available.
  2. 2Create a side-by-side comparison noting the dollar amount and percentage change for each major expense category.
  3. 3Flag any line item that increased by more than 10 percent, appeared for the first time, or disappeared and reappeared.
  4. 4Upload all reconciliation statements and your lease to CAMAudit for multi-year analysis.
  5. 5Review the findings focusing on year-over-year trends and cap compliance across the full period.
  6. 6If overcharges span multiple years, determine whether prior years are still within your audit rights window and dispute each year separately.
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Related Guides

CAM ReconciliationGuide
I Just Got a $12,000 'Reconciliation' Bill: What Even Is This?
CAM OverchargesGuide
Base Year Error in Your CAM Lease: $120,000 Over 10 Years

Explore Related Resources

Tenant TypeRetail StoreTenant TypeMedical OfficeDetection RuleCAM Cap ViolationDetection RuleBase Year ErrorScenarioMy CAM reconciliation just went up 30% or more year over yearScenarioMy landlord won't provide CAM backup documentation

Next Best Step

Choose your next move

Scenario pages should bridge from diagnosis into the dispute path and audit proof.

What is a CAM audit?

Use the audit process if you still need to validate the billing error.

See the CAM dispute guide

Use the dispute playbook if the issue is already active.

Start Free Audit

Run the free audit once you are ready to quantify the overcharge.

Ready to skip the reading and document the overcharge directly?

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Relevant Tenant Types

Retail StoreMedical OfficeRestaurant

Related Scenarios

Are My CAM Charges Too High? How to TellIs it worth auditing my NNN lease CAM chargesWhat Is Included in CAM Charges (And What Shouldn't Be)How to verify my pro-rata share is calculated correctlyHow to Read a CAM Reconciliation Statement

Related Resources

ToolCam Overcharge EstimatorTenant TypeRetail StoreTenant TypeMedical OfficeResourcesCAM Overcharge Detection GuidesToolsFree CAM Audit ToolsGlossaryCAM Glossary

Frequently asked questions

Need 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.io

This 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.