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LiveSlough EPC register connected

Retrofit delivery, seen clearly.

GreenCollar turns open EPC, installer and deprivation data into one working picture: which homes need upgrading, what it will cost, and whether there are enough certified installers to do the work. We help government meet its warm-homes and net zero commitments, street by street.

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Who it is for

One evidence base for the people who have to deliver retrofit

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Inside the workspace
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Lettings standards

Can this home still be let in 2030?

Private rented homes in England need at least an E today. New tenancies are moving to a minimum of C by 2030. Pick a rating to see where a property stands.

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How it works

From open data to a delivery plan

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Guidance on EPCs, MEES and retrofit delivery

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Questions

Common questions

Something else? Email info@greencollar.io or call 07440 181864.

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About us

Started in Slough in 2026 to help government see whether retrofit can be delivered.

GreenCollar was founded in 2026 in Slough. Our starting point was a simple problem: councils, landlords and installers were each working from part of the picture. Energy certificates sat in one register, certified installers in another, fuel poverty and deprivation in a third. Nobody could see all of it at once.

We bring those sources together so the people responsible for warmer, cheaper-to-run homes can make decisions from the same evidence. That means showing which homes need work, what the work will cost, who can carry it out and how long it will take with the workforce that exists today.

We are tackling the challenges government has set itself: lifting homes out of the lowest EPC bands, enforcing minimum standards in private lets, reducing fuel poverty and reaching net zero, with a supply chain that has to grow to match.

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Our journey

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Services

Three workspaces, one set of data.

Choose the workspace that matches your role when you sign up. Every workspace uses the same EPC, installer and area data.

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Contact

Talk to the team in Slough.

Ask about a pilot for your council, a portfolio workspace for your agency, or data for your retrofit business. We reply within one working day.

Phone07440 181864 Emailinfo@greencollar.io
OfficeSlough, Berkshire, United Kingdom
Office hours: Monday to Friday, 9:00 to 17:30.

Send us a message

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Practical guidance for councils and letting agents

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See the EPC data for your area Find the homes that need work, what it would cost and who can do it. Free workspace for councils and letting agents.
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Privacy and data

How we use data

GreenCollar uses public datasets: the EPC Register, the MCS installer register, ONS geography, the English Indices of Deprivation and DESNZ sub-regional fuel poverty statistics. EPC data is used under the Open Government Licence.

Information you add to a workspace, such as a property portfolio, agency profile or follow-up notes, stays in your own browser in this version. We do not sell personal data.

Questions about data can be sent to info@greencollar.io.

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