Commercial MEES Update 2026: Why Data is Your Path to EPC B by 2031
Multi-let Office
What is the June 2026 commercial MEES update?
The UK government interim response has scrapped the proposed 2027 EPC C interim target. Instead, all rented non-domestic properties over 1,000 square metres must move directly to a mandatory EPC B by 2031, provided the upgrades meet the statutory seven-year payback test. Commercial buildings under 1,000 square metres remain safe under the existing EPC E baseline.
The wait is finally over.
The government’s long-anticipated interim response on non-domestic Minimum Energy Efficiency Standards (MEES) (Non domestic MEES interim response 2026) has fundamentally rewritten the compliance landscape for the UK commercial property sector.
For property funds, asset managers, and institutional landlords who have faced years of regulatory paralysis, the update brings welcome clarity, but it also demands a sharp pivot in how we approach sustainability and capital expenditure (CAPEX).
Headlines
Scrapped 2027 EPC C milestone. The proposed 2027 interim milestone requiring an EPC C has been scrapped.
Commercial MEES 1000 sqm threshold. Assets over 1,000 m2 will be required to achieve an EPC B by 2031.
Assets under 1,000m2 will continue to be required to achieve EPC E, as per current requirements.
Crucially, this mandate does not apply universally. In a pragmatic policy shift, the government is introducing a two-tier system that focuses purely on scale. All private rented non-domestic buildings over 1,000 square metres must hit the EPC B target by 2031, while properties under that threshold are currently exempt from the uplift, requiring only the baseline EPC E.
Commercial MEES Update 2026: Navigating the 2031 Timeline
For the past few years, the commercial real estate market has suffered from a form of regulatory gridlock. Transactions, lease renewals, and major refurbishments have frequently stalled because landlords were hesitant to commit capital against a moving target.
By removing the 2027 hurdle and setting a clear 2031 horizon, the government has given the market a definitive runway. The ambiguity is gone. Landlords can now confidently structure lease renewals, asset re-gears, and capital contributions with a stable compliance timeline in mind.
The natural instinct for many asset managers will be to brace for impact, expecting that hitting a B rating across a large portfolio will require millions of pounds in physical interventions, from heat pumps to sweeping solar installations. Crucially, there is an EPC B by 2031 cost effectiveness test.
At HollenPlus, our message is simple: Do not rush into panic-spending on physical works.
Bypassing CAPEX: Why Level 5 Commercial EPC Assessors Matter
The journey to an EPC B on an asset over 1,000 sq m does not begin with a contractor's quote for a new HVAC system. It begins with a laptop, engineering expertise, and painstaking data verification.
When standard energy assessments are carried out, assessors frequently rely on software default values when specific technical data isn't easily accessible. These default assumptions are deliberately punitive. They assume worst-case scenarios for things like U-values, thermal bridging, and plant efficiency, which artificially drags an asset's EPC rating down into a D, E, or F.
Our core approach at HollenPlus has always been to challenge these defaults through Level 5 Dynamic Simulation Modelling (DSM) and meticulous forensic data collection. By tracking down original building specifications, verifying exact equipment model numbers, and accurately modeling the building's thermal behavior, we regularly achieve massive upgrades in rating without a single physical change to the building envelope.
We have successfully lifted large-scale assets, including a 410,000 sq ft logistics hub in Yorkshire and a 300,000 sq ft City office asset, to EPC A’s purely through precision data sourcing and professional level 5 EPC modelling.
In the new regulatory climate, this methodology isn't just a cost-saver; it is the definitive strategy for portfolio management.
Grounded in Institutional Asset Management
Our perspective at HollenPlus is fundamentally distinct because we do not look at energy modeling through a purely theoretical lens.
Our background is rooted deeply in commercial asset management and institutional real estate advisory across the United Kingdom.
We understand that an energy performance rating is not just a compliance tick-box, it is a critical lever that directly dictates asset valuation, debt terms, lease negotiation strength, and long-term liquidity.
Having advised on complex properties from prime city-centre offices to massive industrial hubs, we evaluate every building fabric intervention against its actual impact on the landlord's yield and fund performance.
Our recommendations focus on the most cost effective solutions, to minimise CAPEX spend, and protect and improve IRR’s.
A Strategic Action Plan
With the 2031 target now firmly locked in for properties over 1,000 sq m, asset managers should look to execute a three-step strategy to insulate their portfolios:
Conduct a Scale Audit: Categorise your portfolio assets above and below the 1,000 sq m threshold. The larger assets require immediate strategic attention; the smaller assets are safe for now, though they should still be future-proofed during routine vacancies to protect long-term terminal value.
Deploy Forensic Baselining: Before budgeting any CAPEX for retrofits, invest in high-fidelity Level 5 DSM modelling to establish a true baseline. Discover exactly how close your asset actually is to a B rating when the software defaults are stripped away.
Align Compliance with Building Lifecycles: For assets that genuinely require physical upgrades, use the 5-year runway to align those works with natural lease breaks, scheduled plant replacements, or tenant fit-outs. This ensures compliance is achieved organically, protecting near-term cash flow.