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A year-end property bill is easier to question when every number has a clear basis. Commercial Lease & CAM Check connects expense categories, allocation shares, gross-up rules, caps and payments.
Rebuild the calculation line by line, compare years and keep the relevant lease clause beside each entered rule. Separate arithmetic differences from terms that need clarification, then prepare a documented request for supporting information.
Enter the order in which your lease applies gross-up, the admin fee, the cap, a base year or expense stop and your share — the result follows exactly that order. When a cost's treatment is unclear, it stays marked as unknown and the result is shown as a range, not as a final amount. An unclear capital item becomes a question to the landlord, never a claim that the charge is unlawful.
What you get
- Lease versions with share (area ÷ contract denominator or a fixed %), proration, deadlines and the clause and page for every condition.
- Cost categories with four independent flags: recoverable, controllable, variable, in the admin-fee base — Yes, No or Unknown.
- Gross-up of the variable part only, admin fee on its stated base, cumulative or non-cumulative caps with optional carry-forward, base year or expense stop.
- Line review against the landlord's statement: correct, arithmetic difference, classification question, missing documents.
- Year history, scenario comparison and closed reports that never change after later corrections.
- Question pack, printable request for supporting information and an evidence ZIP with a document index.
How it works
- Enter the lease. Parties, term, area periods, the contract denominator or fixed share, proration and the statement and objection deadlines — each with its clause and page.
- Set the allocation rules. Classify the cost categories and enter the gross-up, admin fee, cap and base year or stop in the order your lease applies them.
- Add the year. Record the invoices with recoveries, the advances you paid, credits, the actual occupancy and the landlord's statement — or import them.
- Review the result. See the charge and true-up step by step, the range where items are unresolved, and every line compared with the statement.
- Ask and document. Turn differences into questions with the calculation and clause, print the request and keep the evidence pack.
Limits
Does not interpret ambiguous lease language or determine whether a charge is legally recoverable. It calculates the terms you enter. Calendar-year statements, one project currency (other currencies with an entered rate), one tenant share per calculation; no document reading or bank connection.
Questions
Does it use AI?
No. No AI guesses: every result is calculated with fixed formulas from the terms and records you enter, and shows its working.
Do I need a subscription?
No subscription is required for the one-time purchase of this product. Access through TidyCents PRO follows the current PRO terms.
What does PRO include?
The full online version of this tool while your PRO is active, including exporting your own reports and backups. Those exports do not use your downloadable-library allowance.
Is the offline program included in PRO?
No. The downloadable offline program, guide and import templates come with the one-time purchase.
Where is my data stored?
Working records are stored in your browser on your device (IndexedDB). Nothing you enter is sent to a server. Keep a backup, especially before changing browsers, clearing browser data or moving to another device.
Can I move my records to another device?
Yes. Export a full backup and restore it in the same product on the other device.
Can several people edit the same workspace at once?
This version is designed for one local workspace. It does not provide simultaneous shared editing.
What happens when PRO ends?
Your records stay on your device. Without an active PRO or a purchase the online version opens them read-only, and you can still export a backup and CSV files. Renewing PRO or buying the tool makes them editable again.
Can I see how a result was calculated?
Yes. Every step of the sequence opens to its inputs, the rule, the intermediate values, the rounding and the result, and the printed report repeats them.
Which countries and lease types does it fit?
Any country and currency, because it uses the terms you enter rather than a built-in legal rule. It suits leases where the tenant pays a share of building operating costs (CAM, service charges, operating expenses) with optional gross-up, admin fee, caps, base year or expense stop. Legal recoverability under local law is outside its scope.
Does it read my lease or the landlord's statement?
No. You enter the terms and figures and note the clause and page each one comes from. Expenses, advances and categories can be imported from CSV or XLSX.
What if the lease is unclear about a cost?
Mark the flag as Unknown. The result is then shown as a range of the entered model — with the item excluded and included — and you can send a documented question. It is never presented as a final amount or as proof that a charge is wrong.
Can a different order of operations change the result?
Yes, and the tool keeps the order your lease states. For example, a $100,000 pool with a cap applied after a 5% admin fee gives a different tenant charge than the same pool with the cap applied before the fee.
What happens to a closed year if I correct an invoice later?
The closed report keeps its stored figures, inputs and hash. Year history shows that today's data would give a different result, and you can create a revised edition.
Business license for use in your own business. No resale or redistribution. Opens in your browser right after payment, on phone and computer. Your figures stay on your device. No physical item.
Commercial Lease & CAM Check
Reconstruct CAM and operating-expense charges from your lease terms, payments and supporting records.
Rebuild your CAM bill — buy once for $24.
- One-time purchase
- Full version of this tool on the site plus an offline version to download. One payment. The offline copy works without a subscription.
- Access with PRO
- Full version on the site while your PRO is active. Export of your results and backups is included. The offline program is bought separately.
Pay by card, Apple Pay or Google Pay
- Works in any country · your own currency
- Download link on the confirmation page and by email
- What you need: Any modern browser · phone and computer · offline HTML file · printable reports, CSV & evidence ZIP · 8 languages
- Refund within 14 days, for any purchase
- Formats: Interactive tool in your browser — phone and computer; PDF & CSV export
- Interactive tool · modern browser · phone and computer · downloadable offline version.
- Explicit calculations: every result shows how it was calculated, with exact arithmetic and rounding only where stated.
- Your working records stay on your device. Export a backup to move them to another device.
- Use your own currency and enter the lease terms, rates and amounts that apply to your premises.
- Printable reports (PDF via your browser), CSV exports, an evidence ZIP and complete backups.
- One-time purchase for the listed product.
Any purchase is refunded if you ask within 14 days of payment. Files that will not open, and anything that does not match its description, are refunded in full at any time, with no time limit.
