The 2030 EPC B target is no longer something commercial landlords can leave to the next lease event. It’s a capital planning issue, a tenant retention issue and, for many assets, a valuation issue. For non-qualifying buildings, changes need to start happening now.
Since 1 April 2023, landlords of privately rented non-domestic property in England and Wales cannot let a property below EPC E unless a valid exemption applies. That requirement applies to existing leases, not just new lettings.
The next step is less settled, but the direction of travel is clear. In 2021, Government consulted on raising non-domestic minimum energy efficiency standards to EPC B by 2030, setting out an implementation framework for privately rented non-domestic buildings. There was strong support with 91 percent of respondents backing the EPC B target and 86 percent backing 2030 as the implementation date.
There’s still uncertainty over the exact timetable. Industry commentary in late 2025 and early 2026 suggests the government may revisit the timetable, with some expecting EPC B to fall between 2030 and 2035. But taking this uncertainty as a reason to wait could be a mistake. For offices, warehouses, retail parks, leisure assets and mixed-use buildings, the upgrade cycle is too long for a last-minute response.
What is an EPC B rated building?
An EPC B rated commercial building is one that has been assessed as energy efficient under the non domestic Energy Performance Certificate methodology. The rating is based on the building’s calculated carbon emissions, taking account of its fabric, heating, cooling, ventilation, lighting, controls and energy source.
The EPC scale runs from A to G, with A being the strongest rating and G the weakest. A B rating means the building performs well against the assessment model, although it is still below the top band. In practical terms, a B rated property is likely to have efficient lighting, reasonable insulation, controlled heating and cooling, modern plant, effective zoning and a building management system that helps reduce wasted energy.
For landlords, EPC B is a compliance benchmark and a market signal. It suggests the asset is better placed than lower rated stock for future letting, refinancing and tenant scrutiny. It should still be supported by real consumption data, because occupier behaviour and operating hours can materially change actual energy use.
Start with the real rating, not the certificate
As EPC is a modelled assessment it doesn’t always reflect how a building actually performs in use. A poorly controlled modern building can waste energy despite a decent EPC, while an older building may have sensible operational improvements that don’t fully show on the certificate.
Start by checking the current EPC, its expiry date, the assessor’s recommendations and the assumptions behind the rating. Some certificates rely on default values where data was missing. Better evidence on HVAC controls, lighting, insulation, metering and plant can sometimes improve the score before any major works begin.
That said, don’t treat EPC improvement as a paperwork exercise. The point is to find the cheapest credible route to compliance, then align it with lease events, refurbishments and tenant plans.
Build a upgrade pathway asset by asset
Create a property-by-property plan showing the current rating, likely route to B, estimated cost, disruption risk, lease constraints and timing.
Any F or G rated property needs urgent attention and may already be unlettable unless exempt. D and E rated assets is the second priority. These could become stranded if higher standards arrive quickly. Don’t ignore C-rated buildings either. The jump from C to B is often steeper than E to D because the simple wins may already be done.
Common measures include LED lighting, improved controls, heat recovery, insulation, upgraded glazing, variable speed drives, better zoning, more efficient chillers or boilers, solar PV, heat pumps and better building management systems. What works depends on the asset. A distribution warehouse with large roof space and long operating hours needs a completely different upgrade path from a multi-let office with legacy fan coil units.
Use metering as the control point
You can’t manage what you can’t measure. Sub-metering, half-hourly data, tenant-level consumption reporting and plant-level monitoring should become standard across commercial portfolios.
This matters most in multi-let buildings where the landlord controls central plant and common areas, but tenants control their own occupation patterns. Without good metering, arguments over service charge recovery and energy waste become guesswork.
Smart meters, IoT sensors and energy analytics can identify out-of-hours consumption, simultaneous heating and cooling, poor set points, failing valves, excessive baseloads and equipment left running unnecessarily. These findings often deliver faster returns than major fabric works. They also give landlords better ammunition when speaking to tenants, lenders, valuers and managing agents.
Bring tenants into the plan early
Commercial landlords can’t achieve EPC B alone. Tenant fit-outs, opening hours, supplementary cooling, server rooms and equipment loads all affect energy demand. Green lease clauses help, but they need to be practical rather than window dressing.
Look at your leases now and identify where you have rights to enter, improve, meter, recover costs or control alterations. For new leases and renewals, build in energy cooperation. That means access to consumption data, restrictions on inefficient fit-outs, agreement on plant operating hours and clear rules on who pays for improvements.
The strongest position is to turn compliance into a tenant benefit. Lower energy use, better comfort, more stable service charges and credible carbon reporting all matter to occupiers, especially larger businesses with their own net zero targets.
Time works must follow lease events
Waiting until 2029 creates a delivery crunch. Contractors, assessors, consultants, equipment suppliers and grid connection teams will all face pressure as deadlines loom. Costs and challenges may increase for landlords who leave everything to the last minute.
Map EPC works against planned refurbishments, dilapidations, void periods, rent reviews and lease expiries. Lighting upgrades might happen during occupation. Plant replacement may need a planned shutdown. Solar PV may depend on roof condition and grid capacity. Heat pump projects may need electrical upgrades that take longer than expected.
For larger assets, think about demand management, battery storage and on-site generation too. These measures may support EPC improvement, reduce peak demand charges and make the building more attractive to tenants with high electricity loads.
The following diagram creates a useful visual guide for commercial landlords and their EPC planning:
Exemptions are not a strategy
The current MEES regime allows exemptions in certain circumstances, but relying on exemptions as a portfolio strategy is risky. Exemptions can expire, may not transfer cleanly through ownership changes, and can create awkward questions during refinancing or sale due diligence.
A building with a weak EPC and an exemption may still struggle in the market. Buyers and lenders will price in the risk. Tenants may prefer premises with lower operating costs and a clearer carbon story.
The commercial risk is bigger than compliance
The government estimates that a move to EPC B will bring a much larger share of rented commercial property into scope. One legal analysis puts the increase at around 10 percent to 85 percent of the rented commercial stock covered by MEES (read more about MEES here). That’s where the real force of the policy lies. This isn’t a niche issue affecting a handful of poor assets.
Treat EPC B as part of asset protection. Buildings that can’t show a credible route to compliance may face lower demand, weaker rents, higher capital expenditure allowances during sale negotiations and more difficult funding conversations.
The best move now is straightforward: audit the portfolio, rank the risks, install proper metering, cost the works, engage tenants and fold the upgrades into the asset plan. The landlords who act early will have more choices, better pricing and fewer surprises when the rules tighten.
