A rental property at an EPC D was perfectly lettable a few years ago. With the direction of travel now firmly towards a minimum C rating, that has changed. Landlords with D-rated stock are quietly working through their portfolio, and agents are increasingly being asked, “how do I get this one up a band?”
The good news is that most D-rated properties do not need a heat pump and a full re-roof to get to a C. The work splits cleanly into three tiers — cheap wins, medium upgrades and bigger fabric jobs.
Tier one: the cheap wins
- Swap all remaining halogen and incandescent bulbs for LEDs.
- Insulate the hot water cylinder properly (a foam jacket and pipe insulation).
- Draught-proof the front door, internal doors to unheated rooms and the loft hatch.
- Service the boiler and provide the assessor with the certificate.
These changes rarely add up to more than a few hundred pounds and can lift the points score noticeably. Done before the assessor visits, they sometimes do all the work needed on a borderline D.
Tier two: the mid-budget upgrades
- Top up loft insulation to current recommended depth.
- Install a modern programmable thermostat with zone control.
- Replace any remaining single-glazed windows with double-glazing.
- Cavity wall insulation, where the construction allows it.
These are jobs you would not do casually mid-tenancy, but at the next void they are sensible. Most properties at a low D can be pulled to a comfortable C with one or two of these in combination with the tier-one fixes.
Tier three: the bigger jobs
If the property has solid walls, an old back-boiler, or a non-standard construction, expect a bigger conversation. Internal wall insulation, a new heating system, solid-wall external render — these are budgeted projects rather than weekend jobs, and your landlord needs the heads-up early.
For any property heading towards a re-rating, get the EPC re-issued promptly once the works are done. A landlord who improves the property but never updates the certificate gets none of the benefit.
