Landlords & Property · 9 min read · Intermediate

Energy-Efficient Refurbishment: What Order Should You Do the Work?

Sequence repairs, insulation, heating, glazing, renewables and finishes so expensive work is not undone later.

Key points & steps

Start with defects: stop leaks, diagnose damp, repair failed drainage, stabilise unsafe fabric and resolve ventilation problems before hiding them behind new finishes.
Record the current property condition and EPC/energy information so later decisions are based on the existing fabric and services.
Plan disruptive fabric work early, including roof/loft, walls, floors, window openings and major airtightness improvements.
Coordinate ventilation with airtightness/insulation changes rather than treating it as an afterthought.
Reassess the room-by-room heating load after major fabric improvements before ordering a replacement boiler, heat pump or new radiators.
Install major heating, hot-water and electrical infrastructure before final plastering, flooring and decorating wherever practical.
Plan solar PV, battery, EV-charging or other electrical upgrades alongside roof and consumer-unit/electrical work so routes and capacity can be considered together.
Finish with decoration, flooring and cosmetic work after the disruptive building-services stages are complete.
Keep a property file containing warranties, commissioning certificates, product details, photos and maintenance notes for future owners, tenants or contractors.

Replacing heating before reducing heat loss can lock in an unnecessarily large system.
New decoration is often wasted if damp, rewiring, pipework or window replacement is still outstanding.
A whole-house plan does not mean everything must be done at once; it means each stage should avoid blocking a later improvement.