One partner. Every stage.
Installation is one stage of six. As Principal Contractor we take accountability for all of them, so your programme has one point of contact and one line of responsibility.
For councils, housing providers and energy companies planning or funding a home energy improvement programme.
- Find
- Engage
- Assess
- Design
- Deliver
- Assure
The six stages
Find
Identify appropriate households.
Data-led targeting, Help4Homes referrals and client stock data, combined into a pipeline that stands up to scrutiny.
Engage
Build trust and support residents.
Advisers who explain what is on offer, what it means and what happens next, in plain language, at the household's pace.
Assess
Understand the property and household.
Retrofit assessment and household needs captured once, so nothing is asked twice and nothing gets missed.
Design
Develop appropriate compliant solutions.
Whole-house design under PAS 2035, coordinated by us, with the measures chosen for the property rather than the grant.
Deliver Installation
Coordinate trusted regional installation capacity.
Our managed delivery network installs to a single standard, under our commercial control and programme governance.
Assure
Manage quality, compliance and handover.
Independent quality checks, compliant lodgement, resident sign-off and the reporting your funder needs.
PAS 2035: the UK standard for whole-house retrofit: assessing the home and choosing measures that work together. Lodgement: registering completed work with the scheme so it counts.
What Principal Contractor means for your programme
A Principal Contractor is the organisation responsible for planning, managing and coordinating the work, including safety on site. On your programme that role is ours, and the installers in our managed delivery network work under our commercial control and programme governance.
What partners can expect
- Standard
- PAS 2035 whole-house retrofit
- Progress and reporting
- Progress meetings and formal reports at intervals agreed with you.

We deliver the solutions that cut fuel poverty and protect our environment.
Warm Homes Delivery
Principal Contractor, end to end
One accountable partner for Local Grant and Social Housing Fund programmes: we find the households, engage the residents, manage the programme and assure every improvement.
Household energy support
Advice, eligibility checks, solar PV and appliances for low-income households, delivered through the Warm Home Discount Industry Initiatives route.
Retrofit Schemes
Compliance management
Experts in obligated scheme compliance delivery, led by Mark Antcliff and his more than 35 years' experience in the field.
Energy Locker
Smart battery storage for social housing
Extends the benefits of a retrofitted home with ongoing energy savings for residents, using models that minimise upfront capital for the landlord or housing association.
Questions from programme partners
Which funding routes do you work with?
We deliver Local Grant and Social Housing Fund programmes as Principal Contractor. We run Help4Homes through the Warm Home Discount Industry Initiatives route, which is support funded by energy suppliers under the Warm Home Discount scheme. Our Retrofit Schemes service manages compliance delivery on obligated schemes, and our management team brings experience across ECO (the Energy Company Obligation) and GBIS (the Great British Insulation Scheme).
Who is responsible on site?
We are. As Principal Contractor we plan, manage and coordinate the work, including safety on site. The installers in our managed delivery network work under our commercial control.
How do you find and engage households?
We combine data-led targeting, Help4Homes referrals and your stock data into one pipeline. Our advisers then talk each household through what is on offer and what it would mean for them, before anything is agreed.
How do you report progress?
At the close of a programme, the Assure stage delivers independent quality checks, resident sign-off and the reporting your funder needs.
During the programme, our meeting and reporting commitments are listed under What partners can expect above.
Do you work with residents directly?
Yes, through Help4Homes. Help4Homes is our multi-supplier funded national scheme, delivering energy-saving advice and measures to households in fuel poverty. We operate and run the scheme, which is endorsed by Ofgem and funded by energy suppliers.
Residents can find out what support may be available on the Help4Homes page.