About Retrofit Radar — built for UK retrofit installers
Retrofit Radar is one indie product, built by one person. It exists because the data to find every cold, leaky UK rental already exists — it just sits in three different gov.uk registries with no map, no filter, and no installer in mind. The work was pulling it together, deduplicating on UPRN, and putting a postcode-radius filter on top.
If you fit heat pumps, lay external wall insulation, swap single-glazing, or run any small UK retrofit crew — this page is the long version of why it got built.
A note from the founder
This is a solo build. No team. No sales rep. No investor on a board calling about ARR. Every email is read by one person.
The trigger was a fortnight on the EPC Open Data register trying to find a list of EPC G rentals near one postcode for an insulation crew. The result was a 3 GB regional CSV, three Excel crashes, and every owner looked up by hand on Companies House. The crew sent four cold emails and got one job. The whole thing took eleven days.
The data was free. The work was the work. The wall was the absence of a tool.
A private preview shipped in April 2026, self-serve checkout opened in May 2026, and the index covers around 17.78 million unique properties across England and Wales, deduplicated by UPRN, on Cloudflare. Two tiers — £99 a month for one postcode patch, £299 a month for full UK coverage. No demo. No sales call. Email gets answered.
Not raising. Not hiring. The plan is to reach about 200 paying installers in 24 months. That’s it.
Why now — the seven-month tailwind
If you fit retrofit kit for a living, the next seven months are the tightest demand-window UK retrofit has ever had. Four government decisions converged in early 2026 and the timing is unkind to anyone without a way to find work fast.
1 Oct 2030 is now a single deadline. The DESNZ Government Response of 21 January 2026 confirmed a single 2030 cliff for private rentals — every let in England and Wales must hit at least EPC C under a new dual-metric standard. The earlier 2025/2028 ladder was never enacted. That gives landlords roughly four and a half years to upgrade around 2.5 million homes (DESNZ estimate). They cannot do it without you.
GBIS just closed. The Great British Insulation Scheme closed to new applications on 31 March 2026 after delivering around 130,800 measures. Every homeowner who was about to apply is now hunting for an alternative.
ECO4 ends 31 December 2026. The Energy Company Obligation Round 4 — the biggest insulation funding pipeline — sunsets in seven months with no announced successor. If 80% of your pipeline is ECO4 today, you already know what January 2027 will feel like.
BUS extended; £400m a year through to 2030. The Boiler Upgrade Scheme is now extended to March 2030 at £7,500 per air- or ground-source heat pump for MCS-certified installers. That is a five-year work pipeline with the cheque already written.
MCS heat-pump installs grew +76% in 2024 and only +3% in 2025. Demand has plateaued. The supply side — you — is hungry for matched demand. The work exists. The match does not.
The match is the product. Nothing else.
What this product believes
These are the four beliefs that shape every product decision. If you disagree with any of them, this is probably not the tool for you.
1. The regulatory deadline is the product
Other tools rank UK property leads by affordability or by how likely a household is to act. Retrofit Radar ranks by how close a home sits to its 1 Oct 2030 cliff — its current EPC band, the recommended measures on its certificate, and whether it is a private let. The order is: who legally has to fix this, by when, and what would you fit there.
If MEES 2030 gets pushed back, the entire premise of the scoring softens. The risk is owned and the MEES enforcement guidance plus the DESNZ MEES consultation response is cited on every page so you can read the rule yourself.
2. Public records, not scraped data
Every property in the index comes from one of three open registries: the MHCLG Energy Performance of Buildings Register, Companies House, and HM Land Registry. All three are published under the Open Government Licence v3.0 — except the HMLR title queries, which are licensed for paid use. HMLR is passed through at cost: £7 per registered-proprietor unlock, no markup, with 10 free per month on Pro.
No bought lead lists. No Rightmove scraping. No LLM over photos. The data is yours to verify against the gov.uk source on every page.
3. Installer-first, not landlord-first
The installer side of the marketplace was chosen on purpose. There are around 22,000 retrofit-relevant UK trades businesses across MCS, TrustMark, FENSA and CIGA registers. They are findable, they pay monthly, and they convert one £15,000 retrofit job into five years of Pro subscription. The landlord side is fragmented across roughly 2.7 million private landlords with low willingness to pay for tooling.
This product sells to the people doing the work. Snugg, Furbnow and Heat Geek do good work on the homeowner side; they’re linked from the FAQs and there’s no overlap.
4. Self-serve or it does not exist
The product has to work for one person with a phone in their van. If you have to book a call to use it, it was built wrong. Sign up with Google in four clicks. Subscribe for £99 a month with Polar (Merchant of Record — they handle UK and EU VAT). Cancel from a button. Email the founder if anything is off.
The headline filters will never sit behind a sales call.
Two things this product will not do
No enterprise chase. No housing-association portfolios, no national contractor accounts, no government RFPs. Those deals need a team that doesn’t exist here. Plentific does that work better. If you are an indie crew with one to ten vans, this is built for you.
No data resale. Lead exports leave the app to your CSV; that is the end of the chain. No reselling installer search behaviour, no enriching third-party brokers with your patches, no trackers sending your filters to ad networks. The full UK GDPR posture and the lawful basis for HMLR lookups is on the Privacy page — concise on purpose.
What you get
A live map of around 2.5 million UK rental homes that legally must hit EPC C by 1 Oct 2030. Filter by your postcode plus a radius you choose, by EPC band, by fuel type, by measures recommended on the certificate. Each property gets a 0–100 retrofit-priority score. Click any one to see its full EPC history, the measures the assessor flagged, and — for £7 per unlock or 10 free a month on Pro — the registered proprietor at HM Land Registry.
Export up to 50 leads a month on Solo, 1,000 on Pro. CSV is yours. Outreach is yours. The work is yours.
What this asks of you
If you fit retrofit kit and you have a postcode, subscribe and get started. No call required. If something on the page is wrong or out of date, email it in — every email gets read and the date at the foot of every long-form page bumps when the claim is fixed.
— Built solo for UK retrofit installers
Last verified: 2026-05-10