PAS 2035:2023 · TrustMark Registered
Every publicly funded domestic retrofit in the UK needs a retrofit coordinator. We do the job properly: whole-house assessment, risk pathway, costed improvement plan, installer coordination and TrustMark lodgement — one accountable name from first survey to final evidence pack.
The title sounds administrative. The job is not. A retrofit coordinator is the person who takes legal and technical responsibility for the fact that a house, after you have spent money on it, is warmer, drier and safer than it was before — and can prove it.
Under PAS 2035:2023, that responsibility runs across five distinct duties. We carry all five:
The single most expensive mistake in domestic retrofit is insulating a building without dealing with how it breathes. Insulation raises internal surface temperatures and reduces uncontrolled air leakage — both good — but the moisture that was previously escaping through draughts now has nowhere to go.
The pattern is depressingly consistent: walls insulated in year one, condensation and mould complaints in year two, remedial ventilation work in year three at a cost that would have covered the ventilation design in the first place.
PAS 2035 exists largely because this happened at scale under earlier funding programmes. The coordinator's job is to stop it happening again.
In practice that means ventilation is designed at the same time as the fabric measures, not bolted on afterwards; that the heating system is sized against the post-retrofit heat loss rather than the pre-retrofit one; and that the order of works reflects how the building behaves, not the order the installers happen to be available.
| Programme | What we handle |
|---|---|
| Warm Homes: Social Housing Fund (formerly SHDF) | Wave delivery at portfolio scale — assessment, design, coordination, lodgement and the compliance evidence the delivery partner reports against. |
| Warm Homes: Local Grant (formerly HUG) | Able-to-pay and low-income private tenure, including eligibility evidence and coordination across mixed-tenure streets. |
| ECO4 & ECO Flex | Whole-house minimum requirements, flex referral routes and the SAP uplift modelling that determines whether a property qualifies. |
| Privately funded | Homeowners and landlords who want the same standard without a grant behind it. |
However suits your governance: direct award under threshold, call-off from an existing framework, or as a named subconsultant in someone else's bid. Insurances, accreditations and references go out the same day you ask. We are also happy to support a funding application before any commitment exists — if the bid fails, you owe us nothing.
Related: portfolio EPCs for your funding baseline, and air permeability testing for post-works quality assurance.
Before You Ask
One Last Thing
Send us a property list and the funding stream you are targeting. We will come back with what qualifies, what it costs to coordinate, and the order the measures should go in — before you commit to anything.