The file exists. It is public. It is free to download. It contains energy performance data for millions of homes across the United Kingdom, assessed and recorded by certified surveyors, updated continuously, and published by the government for anyone to use.
Reviewed by:
Diya - Full Stack Developer - CesiumJS @ Yaksha Visual Technologies Private Limited
It is also 25 gigabytes. It has no coordinates. It cannot be opened in Excel. And by itself, it tells you almost nothing you can act on.
That gap — between data that technically exists and insight that actually works — is the problem we build for. This is the story of how we took the UK's EPC national register, joined it to a second dataset of 2.1 million property coordinates, stripped it down to the 16 streets of Marylebone, grouped 3,233 individual flat certificates into 65 buildings, and delivered the result as a real-time interactive 3D map — served from a single HTML file, with no backend, no database, and no framework. Just open data, made usable.