Witham homes — CM8 commuter-town retrofits, properly.

Almost certainly yes. Most 1930s Witham semis were built with standard brick cavities, currently unfilled, that lose around a third of the home's heat through the walls. Under ECO4, eligible homeowners (on a qualifying benefit and in an EPC D-G property) get cavity wall insulation fully funded. Installation is a single day: small holes drilled into mortar joints, mineral wool or bead blown in, and the holes made good so they're invisible once dry. Typical savings run £250-£450 a year on heating, and the EPC lifts by one band.

Silver End is a bit of a special case. The 1920s-30s Crittall-built modernist village has dozens of Grade II listed flat-roof concrete-framed houses with steel-framed windows — beautiful but thermally dreadful. External wall insulation is rarely permitted on listed Silver End frontages because it would alter the defining character. Internal wall insulation using slim breathable systems (wood fibre, aerogel or calcium silicate) is often accepted, and loft or flat-roof insulation at deck level is usually straightforward. We handle the Listed Building Consent application, coordinate with Braintree District Council's conservation officer and spec build-ups that avoid interstitial condensation in these tricky wall types. ECO4 funding still applies for eligible households.

Yes, and new-build Witham roofs are usually ideal. Modern truss roofs have plenty of structural capacity, clear south or west aspects and no existing tile issues to work around. A typical 4 kWp Maltings Lane array generates 4,100-4,300 kWh/year, which covers 30-50% of a 3-bed's electricity use. Pairing with a 5 kWh battery pushes self-consumption to 70-85%, and Smart Export Guarantee pays around 15p/kWh for exported surplus. If your new-build already has an EV charger, we can integrate solar-aware charging so the car mostly soaks up daytime surplus rather than grid imports. Installation is 1-2 days on site.

Well, in most cases. Terling, Rivenhall and parts of Cressing sit off the mains gas grid, so you're likely on oil, LPG or electric heating — all of which cost more to run than a well-specced air-source heat pump. On a typical 3-bed Terling home a heat pump runs at 300-400% efficiency and cuts annual heating costs by £600-£1,200 compared to oil. The Boiler Upgrade Scheme pays £7,500 off the install regardless of income. We do a full MCS-compliant heat loss calculation at the survey, uprate radiators where needed and weatherproof the outdoor unit properly. Installation is typically 2-3 days on site after a 3-4 week BUS approval wait.