Lighting is one of the cheapest upgrades a landlord can make, and one of the few that pays back three ways: lower bills for the tenant, fewer maintenance callbacks for you, and a small nudge in the right direction on the energy performance certificate. Get it wrong, though, and it shows. A hall full of cold white downlights feels institutional. A cheap LED that buzzes on an old dimmer gets swapped back for a halogen within a month. A stair light nobody can switch off properly runs day and night. What follows is the order of work that gets results without overcomplicating a modest refurbishment.

Start with a walkthrough, not a shopping list

Go round with a step ladder and a notepad — once in daylight, once after dark. If the property is occupied, give proper notice first; if it is between tenancies, do it while the rooms are empty and the ceilings are easy to reach.

For every fitting, note four things: the lamp type (GU10, E27 screw, G9 capsule, or an integrated LED that cannot be replaced), whether a dimmer controls it, whether a sensor or timer handles it, and roughly how many hours a day it is left on. Kitchens, hallways, stairs, bathrooms and outside lights usually account for most of the electricity used, simply because they run the longest.

Replace the lamps that run longest first

A 50W halogen spotlight swapped for a 5W LED cuts that fitting's running cost by roughly nine-tenths. Do that across eight kitchen downlights and the difference is visible on a quarterly bill, not just on paper.

  • Hall, stairs and landing. Left on for hours, often forgotten. Highest return of any room in the house.
  • Kitchen downlights. Usually the largest cluster of high-wattage fittings, and the ones switched on most.
  • Bathroom. Check the IP rating and the zone rules before you buy — a standard fitting in a shower zone is not acceptable.
  • Outside. The light that burns all night. A photocell or PIR sensor, angled so it does not spill into neighbouring windows, deals with it.
  • Odd lamps. G9 capsules and small screw fittings in table lamps are the ones everyone forgets. Leave a labelled box of spares in a cupboard.

Match the colour across a room or a whole floor. Mismatched whites — one warm, one cool — look careless even when the fittings are identical.

Buy brightness in lumens and colour in kelvin

Watts tell you what a lamp costs to run; lumens tell you how much light it gives. Most rental rooms work well with a main fitting somewhere between 400 and 800 lumens, with kitchens and bathrooms needing more light over work surfaces and mirrors. Adjust by how the room feels at night rather than by a formula.

Colour temperature is where landlords lose goodwill. Warm white, around 2700–3000K, suits living rooms, bedrooms and hallways. Cooler white, around 4000K, suits kitchens, bathrooms and utility areas where a crisper look helps. Anything above 5000K reads as car park, and a cold bulb in a bedroom is one of the most common complaints tenants raise. Look for a colour rendering index of 80 or above so food and skin tones do not look grey.

Fix the controls before you fit the lamps

A cheap LED on the wrong dimmer is not an upgrade. It is a callback waiting to happen.
  • Dimmers. Older switches often make LEDs flicker or buzz. Either fit a dimmer rated for LED loads, usually a trailing-edge type, or go back to a simple on-off switch.
  • Sensors. Hallways and communal areas benefit from PIR control. Set the sweep time to at least two or three minutes so nobody is left in the dark mid-task.
  • Timers and photocells. Ideal for external lights, and far more reliable than hoping someone remembers.
  • Two-way switching. Stairs and landings should be switchable from both ends. It prevents a light being left on all evening.
  • Smart bulbs. Think twice if the lighting depends on an app, hub or account. Keep a physical switch that always works, and leave written instructions.

Compliance points that catch landlords out

Fixed lighting forms part of the EPC assessment, so replacing dated fittings with efficient ones helps, though lighting alone rarely moves a property up a full band. In England and Wales, landlords generally need an EPC of E or above to let. Scotland and Northern Ireland have their own rules, and thresholds and dates do change, so check the current position on the relevant government site and take professional advice if you are close to a boundary.

Safety details worth getting right

  • Where a ceiling forms part of a fire-resisting separation — flats, some HMOs, rooms with a habitable room above — replacing a fire-rated downlight with an ordinary one can undermine that separation. Fit fire-rated units or hoods, and take advice if you are unsure.
  • Bathroom zones and IP ratings are not optional. An electrician should handle anything inside the zones.
  • Communal stairwells and escape routes must stay adequately lit. Do not put them on a sensor with a short sweep time, and get advice if emergency lighting may be required.
  • Any alteration to fixed wiring needs a registered electrician and the right certificates kept on file. Private rented homes in England need a five-yearly electrical installation condition report; confirm what applies where you own property.

Where fire safety or electrical compliance is involved, seek professional advice rather than working from assumption.

Keep it tenant-friendly

Two things matter more than specification sheets: glare and layering. Downlights directly above a bed or sofa are uncomfortable, and a diffuser, a shade or a different fitting solves it in minutes. Tenants also want the option of one lamp rather than eight ceiling lights, so leave a floor lamp or two and consider under-cabinet lighting in the kitchen. If you fit sensors, make sure there is a manual override so someone sitting still is not plunged into darkness.

If a tenant reports flicker that causes headaches or eye strain, treat it as a priority repair. They should speak to a GP if symptoms persist.

Record what you have fitted

Keep a one-page log: room, fitting type, lamp type, wattage, colour temperature, and whether it is dimmed or sensor-controlled. Store receipts and electrical certificates together. Check the lamps at each tenancy change and at the annual gas safety visit — two dead bulbs make a well-kept flat look neglected, and replacing them takes a few minutes.

The practical checklist

  1. Walk through after dark and list every fitting, lamp type and control.
  2. Replace halogens in the rooms used most: kitchen, hall, stairs, bathroom.
  3. Standardise colour temperature room by room — 2700–3000K living and sleeping, 4000K wet and working areas.
  4. Match the lumens to the job rather than the wattage to the old bulb.
  5. Check dimmers are LED-compatible, or swap them out.
  6. Fit sensors or timers on hall, communal and outside lighting, with sensible sweep times.Photo: PublicDomainPictures / Pixabay