For years, the EPC has been a “tick-box” exercise. That is about to change.

We are currently seeing the most significant overhaul of energy reporting in a generation. The shift from RdSAP to the Home Energy Model (HEM) isn’t just a software update—it’s a fundamental change in how your property’s value and compliance are measured.

If you manage a portfolio, here is why 2030 needs to be on your radar right now:
The “Evidence is King” Era
The days of “assumed” insulation values are over. Audit rigour is tightening. To secure a top rating, you’ll need granular data: precise insulation specs, heating efficiencies, and—crucially—photographic evidence of works. Without proof, surveyors will have to default to “worst-case” values.

New Metrics = New Risks
The A–G rating is moving beyond just “fuel cost.” The new model introduces Energy Use Intensity (EUI) and Carbon Emissions. If your strategy relies on old gas boilers or traditional storage heaters, your rating could take a hit under the 2030 methodology.

Winners & Losers
The HEM methodology heavily favours electrification and modern tech. Properties with heat pumps and solar PV will see a boost. Properties relying on older “fabric” standards without modern tech may see their ratings slide.

Avoid the “Double-Spend” Trap
This is our most critical advice: Build for 2030, not today. If you renovate to hit a marginal “C” under current rules, you might find yourself non-compliant again in just 24 months. By adopting a “Fabric First” approach now, you protect your investment against future “Sub-standard” headaches and avoid paying for the same work twice.

The Bottom Line: A property that is compliant today may require expensive retrofits by 2030 if you don’t account for the HEM transition now.

Professionals plan ahead. Is your portfolio ready for the “Big Shift”?

Landlords: Are you already factoring HEM into your 2026 refurbishment budgets? Let’s discuss.