Almost every dispute a landlord loses is lost on paperwork, not facts. The rent really was in arrears — but the ledger was three screenshots and a bank app. The boiler really was serviced — but the certificate went to an old email address. The deposit deduction really was fair — but there was no signed inventory to prove the carpet wasn't already stained. Since the Renters' Rights Act removed Section 21, possession runs through evidenced grounds — which makes your records the case.
This guide covers what you're legally required to keep, for how long, and the small set of habits that make records dispute-proof rather than merely present.
The legal retention periods
These are the ones written into law or official guidance. Treat them as minimums.
Tax records — at least 5 years after the 31 January submission deadline. If you complete a Self Assessment return with property income, HMRC requires you to keep the records behind it — rent received, expenses, mileage, mortgage interest statements — for at least five years after the submission deadline of the relevant tax year. For the 2025–26 return due by 31 January 2027, that means keeping records into 2032. HMRC can charge penalties for inadequate records, and an enquiry without records tends to be resolved in HMRC's favour. Source: gov.uk — keeping your pay and tax records.
Gas safety records — 2 years, minimum. The Gas Safety (Installation and Use) Regulations require landlords to keep each annual gas safety record for two years. In practice, keep every CP12 for the life of your ownership: a historic record is how you demonstrate a consistent safety culture if anything ever goes wrong. Source: HSE — gas safety for landlords.
Electrical reports (EICR) — until superseded, and given to tenants within 28 days. You must keep each EICR until the next inspection (they're valid up to five years), supply a copy to existing tenants within 28 days of the inspection, and give it to new tenants before occupation. Keep the superseded ones too — they evidence the condition history of the installation. Source: gov.uk — electrical safety standards in the private rented sector.
Right to rent checks — the whole tenancy plus 12 months. Keep copies of the documents you checked (or the online share-code check result), with the date of the check, for the duration of the tenancy and for one year after it ends. This is your statutory excuse against a civil penalty. Source: gov.uk — right to rent checks.
Deposit protection — keep the evidence indefinitely. The certificate of protection and proof that you served the prescribed information within 30 days are the foundation of any future deduction claim — and their absence is the classic way landlords lose disputes outright. There's no statutory retention period; keep them for as long as any claim connected to the tenancy could surface.
EPCs — 10-year validity, but keep the history. Each certificate lasts ten years. With every rented home required to reach EPC C by 1 October 2030, your past certificates plus improvement invoices are how you evidence spending against the £10,000 cost cap — eligible works funded from October 2025 onwards count, but only if you can prove them.
Alarm checks are a record-keeping trap: smoke and carbon monoxide alarms must be working on the first day of each tenancy, but the regulation is only worth anything to you if the check was recorded — a dated entry in the inventory or a signed check-in note. An unrecorded check and no check look identical to a tribunal.
Records the law doesn't demand — but disputes do
- A per-tenancy rent ledger. Every charge, every payment, every date. Under the new possession regime, arrears grounds are decided on evidence — a clean ledger is the difference between a straightforward hearing and an adjournment. "Memory and the bank app" is not a ledger.
- The tenancy file: signed agreement, inventory with date-stamped photos, check-in and check-out reports, the How to Rent guide with evidence of when you served it.
- A written repair trail. Date reported, what was said, who attended, when, and the invoice. Awaab's Law-style hazard-response duties are coming to the private rented sector, and they will be enforced against timelines — which only records can prove.
- Copies of every notice you serve, with proof of service. A notice you can't prove you served is a notice you didn't serve.
Three habits that make records dispute-proof
1. One home per tenancy, not per document type. Filing by document type ("all the gas certs together") means reconstructing a tenancy's story across ten folders under deadline pressure. File by property and tenancy, so the whole case sits in one place.
2. Date-stamp at the moment of creation. Photos taken at check-in with visible timestamps, emails rather than calls for anything material, written confirmation after any verbal agreement. Contemporaneous records carry weight; reconstructions don't.
3. Don't keep everything forever. Tenant data is personal data under UK GDPR, and the storage-limitation principle means holding it without purpose is itself a compliance risk. A reasonable pattern: keep the tenancy file for six years after the tenancy ends (the limitation period for contract claims), then delete. Many landlords also need to pay the ICO's data-protection fee — check with the ICO's data-protection fee guidance.
The quickest way to audit yourself: pick one current tenancy and try to assemble, in ten minutes, the signed agreement, deposit certificate + prescribed information, current gas record, EICR, EPC, right to rent evidence, and a complete rent ledger. Whatever you couldn't produce in ten minutes, you couldn't produce for a tribunal either.
That ten-minute test is essentially what our free Compliance Health Check runs across your whole portfolio — 17 questions, a score out of 100, and your top three gaps.
