Want lower bills and a better EPC without a major build? These sub-£25k upgrades suit homes in Kings Worthy, Headbourne Worthy and Twyford — and they’re quick wins for comfort and resale.
Prioritised upgrade list (cost bands & typical payback)
| Upgrade | Typical cost band | Typical benefit |
|---|---|---|
| Loft/roof insulation top-up (to 300 mm+) | £800–£2,500 | Big heat-loss cut; fast payback |
| Cavity wall insulation (where suitable) | £1,200–£2,500 | 10–15% heating reduction |
| Airtightness + draught-proofing | £500–£2,000 | Comfort + reduced infiltration |
| High-performance doors/windows (targeted swaps) | £4,000–£12,000 | Better EPC; comfort/noise cut |
| Heating controls & TRVs / smart zoning | £600–£1,800 | 8–12% energy savings |
| Cylinder & pipe insulation | £200–£600 | Cheap, quick, effective |
| Solar PV (small array) | £5,000–£8,000 | Bill reduction; export revenue |
| ASHP-ready system tweaks (emitters/pipework) | £2,500–£8,000 | Future-proofing for low-carbon heat |
Combine loft insulation + airtightness + smart controls for the best ROI under £5k.
Low-disruption “weekend fixes”
- LED upgrades, radiator reflector panels, smart thermostats.
- Trickle vents and MVHR in wet rooms to manage moisture.
- Chimney balloons in unused fireplaces.
Funding & approvals
- Check current local/utility grants for insulation, PV, and low-carbon heating.
- Most upgrades are Permit-free; Listed or conservation homes should verify window changes first.
Next step: Ask a local architect/assessor for a fabric-first mini-audit to prioritise wins for your house type and budget.