What records a landlord needs to keep

Landlord record keeping has an awkward property: the effort is certain and the payoff is not. You will file hundreds of documents and need perhaps five of them. But those five arrive without warning — a deposit dispute, a tax enquiry, an insurance claim, a tenant who says the boiler was never serviced — and there is no way to produce them retrospectively.

So the question is not whether to keep records. It is how to keep them cheaply enough that you actually do.

What to keep

The tenancy

• The signed agreement and every renewal or variation, in a chain where it is obvious which one was in force on any given date.
• Right-to-rent, identity or immigration checks where your jurisdiction requires them, with the date they were carried out.
• References and guarantor agreements.
• The check-in and check-out condition reports, with photographs.
• Notices served, with proof and date of service. How a notice was served is as important as what it said.

The money

• A record of rent due per period, not only rent received — see tracking rent payments and arrears for why this distinction matters more than it looks.
• Receipts issued, and the bank records they reconcile to.
• The deposit: amount, date, who paid it, where it is held, protection certificate, and any deductions with their evidence.
• Every expense invoice, tagged to a property — not just to a month.

The building

• Safety certificates and inspection records: gas, electrical, fire, alarms, whatever applies locally, with their expiry dates somewhere you will see them before they lapse.
• Insurance policies and claims.
• Maintenance history per unit: what was reported, when, what was done, what it cost.
• Warranties and manuals for appliances — worth more than people expect when something fails in year three.

The correspondence

Underrated, and the category most often lost. Messages about repairs, complaints, rent reminders, access arrangements and notice. In a dispute, the timeline of who said what and when is frequently the whole argument, and text messages on a phone you replace every two years are not a record.

How long to keep it

Retention periods are set locally and differ substantially, but the shape of the answer is consistent. Keep a document until the last of these has passed:

• The tax retention period in your country for business records. Five to seven years after the relevant tax year is the common range.
• The limitation period for a claim arising from the tenancy — often six years for contract claims, sometimes longer.
• The life of the asset, for anything capital. A record of what you paid for a roof matters whenever you eventually sell, which may be decades away.

In practice this means: tenancy and money records for at least six or seven years after the tenancy ends, and purchase, improvement and capital-expenditure records for as long as you own the property. Digital storage is cheap enough that the cost of over-retaining is close to nothing, while the cost of under-retaining can be a disallowed deduction or a lost claim.

Organise by property, then unit, then tenancy

Almost every landlord starts by filing chronologically — a folder per year, or worse, per month — because that is how documents arrive. It works until you own a second property, and then it stops working forever, because every question you are ever asked is about a place, not about a period.

The structure that survives growth:

1. Property — purchase records, insurance, building-wide safety certificates, capital works.
2. Unit — condition reports, appliances and warranties, maintenance history.
3. Tenancy — agreement, references, deposit, rent record, correspondence, notices.

Date-based filing then becomes unnecessary, because dates are a property of each document rather than a place to put it.

Making a record that will still be readable

Three failure modes account for most lost records, and all three are avoidable:

The photograph with no context. A picture of a damaged worktop, in a camera roll, among four thousand others. Without a date, a property and a reason, it proves nothing. Attach it to the unit when you take it, or it is decoration.

The single copy. One laptop, one phone, one filing cabinet. Whatever you use, something else must hold a second copy, and you should have checked at least once that the second copy actually opens.

The format nobody can open. Proprietary formats, an old accounting package, a spreadsheet with links to files that moved. PDFs and plain images are boring and will still open in fifteen years.

A yearly half-hour that pays for itself

Once a year, per property: confirm every safety certificate is current and diarise the next one; check the insurance still reflects what the building is and what it is worth; confirm the tenancy on file is the one actually in force; and spot-check that you can open three documents at random.

That last one catches the backup that stopped running eight months ago, which is the failure everyone discovers at exactly the wrong moment.