Every record you keep is a message to a future version of yourself who has forgotten everything. The test of a record is not whether it looked thorough when you wrote it. It is whether, eight months later, it answers a question asked by someone who was not there.
Three questions, specifically: what happened, when, and how was this number arrived at?
Why the third question is the one that fails
Most records handle the first two well enough. A payment of KES 24,500 on the twelfth is recorded as a payment of KES 24,500 on the twelfth. What is almost never recorded is the derivation: that it settled 18,000 of August rent, 900 of water at six units by 150, and 5,600 of arrears carried from July.
Without that, the number is true but useless. It cannot be checked, cannot be reconciled against what was owed, and cannot answer the only question anyone will ever ask about it, which is "what was that for?"
What a durable record has
- A date that is the date it happened, not the date somebody wrote it down.
- The parties, named: who paid, who received, which unit, which landlord.
- The derivation, where a number was calculated: the reading, the rate, the multiplication.
- The document behind it, where one exists: the delivery note, the invoice, the receipt number.
- Who recorded it. Not to assign blame; to know who to ask.
Corrections should be entries, not edits
The most common way a good record becomes a worthless one is being tidied. Somebody notices last month's figure was wrong and fixes it in place. The books now balance and the history is gone. and worse, nobody can tell from looking whether anything was changed at all.
A correction should be a new entry that references the original and states the reason. It is slightly uglier and infinitely more defensible. This is the whole idea behind an append-only audit trail, and it is the difference between records that settle a dispute and records that become part of one.
Store it where it survives the person
A great deal of property record-keeping lives in individuals: the manager who knows which tenants pay late, the accountant with the spreadsheet, the caretaker who remembers which unit had the leak. All of it disappears when they do, at exactly the moment you need it most.
The fix is boring and effective: records in a shared system rather than a personal device, with access by role, and backups that somebody has actually tested restoring. An untested backup is a belief, not a control.
What "good" feels like day to day
You can answer a tenant's question about a charge from six months ago in under a minute. You can show a landlord where a figure on their statement came from without rebuilding it. You can hand a new member of staff the file for a unit and have them understand its history without a briefing.
That is the standard, and it is reachable with a notebook, a spreadsheet or a system. The format matters far less than the discipline of recording the derivation at the moment the thing happens, while it is still obvious. It is never obvious later. That is the entire problem.