Charleston County office lease: estimated payment true-up case study
A public-record government office case study where the pipeline surfaced a gross-up advisory on a $42,875 expense pool. The Rule 18 true-up finding from the prior pipeline run did not reproduce in the current multi-pass extraction.
What happened
Charleston County leased 5,000 square feet at 4000 Faber Place Drive under a triple-net lease with a 10% pro-rata share. Monthly CAM estimates of $3,000 added up to $36,000 paid during the year. When the 2024 reconciliation arrived, the landlord billed a $8,500 true-up. The math from the building expense ledger suggests the correct true-up is $5,283.76. The current multi-pass extraction pipeline did not extract sufficient true-up data to fire Rule 18, so only a gross-up advisory was produced.
Findings from the pipeline
Lease evidence
- Pro-rata share fixed at 10.00% (5,000 SF / 50,000 SF).
- Triple-net structure with annual CAM reconciliation.
- Monthly estimates of $3,000 collected during the year.
- True-up methodology: actual tenant share minus cumulative estimates paid.
Why this matters for your firm
Year-end true-up errors are easy to miss because tenants rarely see the building expense ledger. The landlord presents a single line showing what you owe, and most tenants pay it. The fix is straightforward: multiply total building expenses by your pro-rata share, subtract what you already paid in estimates, and compare. This case demonstrates that extraction quality directly affects detection coverage.
Correction package excerpt
Re: CAM Reconciliation Dispute, 4000 Faber Place Drive, Lease Year 2024. The automated review identified a gross-up advisory on tax charges and recommends manual verification of the year-end true-up calculation.
True-up reconciliation error guide
Lease languageCAM reconciliation checklist
Industry guideOffice building CAM audit guide
Frequently asked questions
What findings did CAMAudit surface in the Charleston County, South Carolina case?
CAMAudit flagged 0 findings with an apparent overcharge of $0. Each finding cites the specific detection rule, dollar amount, and the lease provision that grounds the dispute.
Can my firm reproduce these findings on a live client engagement?
Yes. Your firm uploads the lease and CAM bill. CAMAudit checks them against the same rule set. Your firm reviews the findings. Then your firm sends the branded report to the client.
Is Government office a common property type for CAM audit engagements?
CAMAudit handles all commercial property types: retail, office, industrial, mixed-use, and specialty. The detection rules apply wherever a tenant pays CAM or operating expenses under a lease with specific definitions, caps, or exclusion lists.
What is a correction package and does CAMAudit generate one?
A correction draft is a factual starting point that specifies each overcharge by rule, dollar amount, and lease provision. CAMAudit generates a draft grounded in the specific audit findings for advisor and counsel review.
Run these same detection rules on your client engagements
Upload a client lease and CAM bill. CAMAudit applies the same rule set used in this case study. Your firm reviews the findings and sends the branded report to the client.
Book a partner walkthroughPublic-record note
This page summarizes public-record documents and CAMAudit output for educational and marketing purposes. It does not imply endorsement by Charleston County, South Carolina or any third party. Readers should review the underlying lease, statement, and dispute timeline for their own facts.