PAS 2035 is the UK’s domestic retrofit standard that sets the roles, process and quality framework for safe, effective, whole-house upgrades (Assessor, Coordinator, Designer, Installer). It was introduced in 2019 and has since been updated, ensuring projects are assessed, designed and delivered consistently.
At Eco Sure Energy, we work to PAS 2035 so improvements complement each other (fabric, services, ventilation) and support a lasting EPC uplift.
A qualified Retrofit Assessor visits to capture detailed information about your property—construction and fabric, current condition (including damp/condensation risk), existing heating/hot water, lighting and ventilation, plus occupancy details and any special considerations. They’ll typically need access to all rooms (including loft, basement/cellar and attached garages). Assessments can take up to around 2.5 hours depending on the home.
We use this data to identify appropriate energy-saving measures and to avoid unintended consequences (for example, ensuring insulation and ventilation strategies work together).
Postcode, benefits/LA Flex, EPC status.
Thorough property survey and evidence capture.
Coordinator aligns design, ventilation strategy and sequencing.
Accredited teams deliver measures to standard.
We prepare the documentation pack and liaise with the energy supplier.
Your Retrofit Coordinator oversees the project end-to-end—assembling the whole-house plan, aligning roles and evidence, and making sure designs and installations meet PAS 2035 requirements through to handover.
What you get:
We provide a named contact to talk through your survey results and plan, answer questions, and offer practical energy-saving advice tailored to your property. (Think of them as your day-to-day guide while the Coordinator manages technical compliance.)
Our Process:
ECO4 is a UK Government scheme administered by Ofgem that funds approved energy-efficiency measures for eligible households. The scheme runs until 31 March 2026. We pre-check eligibility (including LA Flex routes where your council uses them), confirm details at survey, and manage evidence for supplier sign-off.
Why it helps: qualified homes can receive funded measures with no upfront cost for works within ECO4 scope; anything outside scope is quoted in advance.
We’re here to ensure your experience with us is as seamless and enjoyable as possible.
The Assessor collects detailed information; the Coordinator analyses it and creates your plan. We’ll then talk you through the options and next steps.
Allow up to around 2.5 hours, depending on property size and access.
Improvements that reduce heat loss or improve system efficiency (e.g., insulation, heating controls, ventilation). We prioritise measures that work together to cut bills and improve EPC ratings.
Eligibility is based on benefits criteria and property factors; LA Flex lets local authorities widen eligibility in some areas. We’ll run a quick check and confirm at survey.
For eligible homes, approved ECO4 measures are funded; anything else is priced transparently before work starts.
Tell us your postcode and a few details. We’ll confirm ECO4 eligibility, arrange a survey, and manage everything from funded supply to sign-off.
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