Void Period Property Maintenance in London: What to Check Between Tenancies

Making the Most of a Void Period in a London Rental Property

A void period — the time between one tenancy ending and the next beginning — is the best opportunity a London landlord has to carry out maintenance, compliance checks, and improvements without affecting a sitting tenant. Making the most of this window reduces the risk of emergency repairs during the new tenancy, ensures full compliance before the new tenant moves in, and allows any works that would be disruptive to occupied properties to be completed without inconvenience.

Gas Safety: Boiler Service and CP12

The gas safety check is the first compliance item to address during a void period. Every privately rented property must have a valid CP12 Gas Safety Certificate. If the existing CP12 is due to expire before the end of the proposed new tenancy, it must be renewed. Even if the existing CP12 is technically valid, a void period is an ideal opportunity to carry out a full boiler service if one has not been done within the previous 12 months.

As part of the boiler service, the engineer will check the boiler pressure, inspect the heat exchanger and burner, test combustion, check the flue, and confirm all controls are operating correctly. Any faults identified during the service can be repaired during the void period before the new tenant moves in, avoiding an emergency callout in the first weeks of the tenancy. The CP12 must be issued to the new tenant before or on the day of move-in — not within 28 days as applies to existing tenants.

Electrical Safety: EICR and Smoke Alarms

An Electrical Installation Condition Report (EICR) is required at least every five years for all privately rented residential properties in England. If the EICR is due to expire during or before the end of the proposed new tenancy, carry it out during the void period. Any C1 (danger present) or C2 (potentially dangerous) observations identified in the EICR must be remedied within 28 days — or before the new tenant moves in if the void period allows.

Smoke alarms must be tested and confirmed working at the commencement of every new tenancy. The void period is the time to test all smoke alarms and replace any that are not functioning, have flat batteries, or are beyond their operational life (typically 10 years from manufacture date, printed on the back of the unit). A carbon monoxide detector must be present in any room with a gas appliance. Check that detectors are correctly positioned and test them before the new tenancy begins.

Plumbing: Leaks, Seals, and Legionella Flushing

Inspect under all kitchen and bathroom sinks for signs of slow leaks — staining, swollen cabinets, or musty odour. Check toilet cisterns for internal leaks by placing a small amount of food colouring in the cistern and observing whether colour appears in the bowl without flushing. Check shower and bath silicone seals for cracking or mould growth and replace where needed. A failed bath seal allowing water to penetrate the floor structure can cause significant damage before it is noticed.

For properties that have been vacant for more than a week, carry out a Legionella flushing procedure before the new tenant moves in. Run all hot and cold outlets — taps, showers, and any garden taps — for a minimum of two minutes each. This flushes any stagnant water from the system and reduces the risk of Legionella bacteria growth in the pipework. Document the flushing procedure with a note of the date and your initials.

General Condition: Decoration, Fixtures, and Doors

The void period is the time to fill nail holes and touch up decoration where required. Repaint any areas of significant scuffing or staining. Replace worn carpet or flooring — a fresh floor covering significantly improves the impression the property makes on incoming tenants and justifies a higher rental price. Check all internal and external doors to confirm they open and close correctly and that all locks operate smoothly. Test all windows to confirm they open, close, and lock, and check that drainage channels in tilt-and-turn frames are clear. Test extractor fans in bathrooms and kitchens — a blocked or failed extractor is a common source of condensation dampness complaints in the first months of a new tenancy.

Preparing the Compliance Pack

Before the new tenant moves in, prepare the full compliance pack that must be provided by law. This includes the current CP12 Gas Safety Certificate, the current EICR, a valid Energy Performance Certificate (EPC) with a rating of E or above (D or above for new lets from the proposed new standard), the Government How to Rent guide (current edition), and the deposit protection certificate and prescribed information. Having all of these documents prepared during the void period means move-in day is straightforward and legally compliant. Prestige Engineers can provide CP12 and EICR during void periods with short notice for landlords across all London boroughs.