Commercial MEES exemptions: building a defensible evidence record across a property portfolio

Executive summary

The minimum standard currently in force for privately rented non-domestic property in England and Wales is EPC E. Since 1 April 2023 the prohibition applies to all such properties, not only at the point of a new letting, unless a valid exemption is registered on the PRS Exemptions Register. That position is set out in the DESNZ landlord guidance and derives from the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015.

Exemptions are self-certified but not informal. They apply only from the point of registration, they carry defined evidence requirements, most last five years, and they generally cease to be effective when a let property is sold or otherwise transferred. Across a portfolio, the compliance risk is rarely a single wrong judgement. It is administrative: exemptions relied on but never registered, evidence held by a former managing agent, expiry dates that nobody tracks, and assets whose position changed after a refurbishment or a lease event without anyone revisiting the file.

Key points

• The standard in force is EPC E; the proposed EPC B requirement for larger non-domestic let property is policy intent, not enacted law.
• An exemption must be registered before it can be relied on, and applies from the point of registration.
• The seven-year payback, all improvements made, wall insulation and devaluation exemptions last five years; the third-party consent exemption lasts five years or, where tenant consent was the issue, until the tenancy ends or is assigned.
• A temporary six-month exemption is available in defined circumstances where a party has recently become a landlord.
• Registered exemptions may not pass to a new owner on sale or transfer.
• The Register is publicly searchable, and enforcement sits with Local Weights and Measures Authorities.

Which properties are in scope at all

Before considering exemptions, establish whether the regulations bite. They apply to non-domestic rented properties that are legally required to have an EPC. They do not apply where a tenancy is granted for a term certain not exceeding six months, subject to the renewal and prior-occupation qualifications in the guidance, or for a term certain of 99 years or more. A property that is empty and not being let requires no action until a letting is contemplated.

This produces a distinction that portfolio records frequently blur. A building outside EPC scope, or let on a tenancy type outside the regulations, needs no exemption at all — the guidance is explicit that an exemption is not required in those cases, and registering one is unnecessary. A sub-standard property that is within scope needs a registered exemption. Recording both situations as "exempt" in an asset register hides the difference, and the difference is what an enforcement authority will test. It is also worth separating the two concepts entirely: an EPC exemption concerns whether a certificate is required for the building at all, while a MEES exemption concerns whether a sub-standard property that does have, or requires, an EPC may lawfully continue to be let.

The exemptions currently available

The six routes below are those set out in the current guidance on PRS exemptions and Exemptions Register evidence requirements. Every registration also requires the property address, the exemption type and landlord details.

• Seven-year payback: where a recommended measure fails the simple seven-year payback test in regulation 28(3) to (8). Evidence: three installer quotes for purchase and installation, the cost calculations, and confirmation that the landlord is satisfied the test is not met. Duration five years.
• All improvements made: where all relevant energy efficiency improvements have been made, or there are none that can be made, and the property remains sub-standard. Evidence: the EPC, plus any separate report relied on. Duration five years.
• Wall insulation: where the only relevant improvements are cavity, external or internal wall insulation and written expert advice shows they would negatively affect the fabric or structure. Evidence: the expert's written opinion. Duration five years.
• Third-party consent: where consent from a tenant, superior landlord, mortgagee, freeholder or planning authority is required and, despite best efforts, is refused or given on conditions that could not reasonably be complied with. Evidence: correspondence and documentation showing consent was sought and refused or conditioned. Duration five years, or until the tenancy ends or is assigned where tenant consent was the issue.
• Property devaluation: where an independent surveyor on the RICS register of valuers advises that the relevant measures would reduce the market value of the property, or the building it forms part of, by more than 5%. Evidence: that surveyor's report. Duration five years.
• Recently becoming a landlord: a temporary exemption of six months from the date of becoming the landlord, available only in the circumstances described in the full guidance.

The seven-year payback test in practice

The test compares the expected value of energy bill savings over seven years from completion of the installation against the cost of purchasing and installing the measure or package. The formula sits in regulation 28 of the 2015 Regulations, and the calculation methodology is described in the full non-domestic landlord guidance. Two points determine whether a registration will survive scrutiny.

First, the test can be applied to a measure or to a package of measures, so the composition of the package changes the answer. Second, the inputs are assumptions — energy prices, consumption profile, installed cost — and the guidance requires three installer quotes and the underlying calculations to be uploaded. An exemption supported by a single budget figure from a framework contractor, or by an internally generated cost with no quotes, is weakly evidenced whatever the arithmetic shows. Where energy prices have moved materially since the calculation was produced, the outcome may no longer hold; that is one reason the five-year expiry exists.

Registration mechanics and transfer on sale

Registration is made by the landlord or an agent on a self-certification basis through the PRS Exemptions Register, and the exemption applies from the point of registration. Supporting evidence is uploaded to the Register. Where a property is improved to EPC E, or ceases to be let, the exemption can be ended from the account dashboard.

The transfer position is the one most often missed in transactions. The guidance states that exemptions registered against a let property may not pass to a new owner or landlord on sale or other transfer; where a let property is transferred with an exemption registered, the exemption ceases to be effective and the new owner must either improve the property to the minimum standard or register an exemption where one applies, if letting is to continue. For acquisitive funds, that makes exemption re-registration a day-one completion task, not a post-completion tidy-up, and makes the seller's evidence pack a disclosure item worth requesting during diligence.

Governing exemptions across a portfolio

For a portfolio of any scale, the controls that matter are unglamorous. We would expect an institutional landlord to maintain the following as a single source of truth, owned by the asset management or compliance function rather than by individual managing agents.

• An asset-level register recording, for every let non-domestic property: current EPC rating and expiry, whether the property is within the scope of the regulations, and whether any exemption is registered.
• For each exemption: the type, the registration date, the expiry date, the evidence uploaded, and the individual who certified it.
• A distinction between properties outside scope, compliant properties, sub-standard properties with a registered exemption, and sub-standard properties with no exemption in place.
• A forward calendar of expiries with a lead time long enough to reassess improvement options before the exemption lapses.
• Trigger-based reassessment on lease renewal, assignment, refurbishment, EPC re-lodgement, change of managing agent and asset transfer.
• Retention of the underlying evidence in the landlord's own systems, not solely on the Register or with an adviser.

Reassessment matters because eligibility is not static. A consent exemption based on a tenant refusal ends when that tenancy ends or is assigned. A payback calculation reflects installed costs and energy prices at a point in time. An all improvements made exemption reflects the recommendations on a particular EPC; a re-lodged certificate may recommend measures that did not previously appear. Treating an exemption as a five-year holiday, rather than a five-year deferral with review triggers inside it, is how portfolios end up letting sub-standard space without cover.

Enforcement exposure

Enforcement sits with Local Weights and Measures Authorities, which may serve a compliance notice up to 12 months after a suspected breach and may request the EPC valid at the time of letting, the tenancy agreement and information on improvements made. Registering false or misleading information on the Register is itself a form of non-compliance identified in the guidance, and the Register is publicly searchable, including details of penalties issued. Penalties are set out in the Regulations and applied by the enforcement authority.

The practical exposure for institutional owners is wider than a penalty. Exemption records are now routinely requested in transaction diligence, lender covenant reviews and fund-level reporting, and reliance on exemptions across a material share of a portfolio reads as deferred capital expenditure rather than resolved compliance.

Current law, published policy and proposals: keeping them separate

Three categories should never be merged in a board paper. The law in force is the EPC E minimum under the 2015 Regulations, with the exemption regime described above. Published official guidance is the DESNZ landlord guidance and the PRS exemptions guidance, which explain how the regulator expects the regulations to be applied. Government policy intent is the proposed EPC B requirement for privately rented non-domestic buildings above 1,000 m², which requires secondary legislation and is not in force; the detail, including the treatment of exemptions under a reformed regime, has not been settled. Our EPC reform tracker records the current position, and our commentary on what landlords should do while the reform remains unresolved covers the strategic response.

It follows that no assumption should be made that an exemption registered today will carry over to a future standard, or that the seven-year payback test will survive reform in its current form. Exemption reliance should be planned as a bridge with a known end date, not as a settled outcome.

Two lists for the board pack: exposure today and planning risk

A single "MEES risk" figure in a board paper usually answers two different questions at once. It overstates the immediate position, understates the value of the evidence already held, and can put capital expenditure in the wrong order. We advise clients to report MEES as two separate lists.

• Exposure today: let properties within scope that do not meet the standard currently in force, together with every property relying on a registered exemption and the date that exemption ends. This list answers "are we compliant now, and what lapses next?"
• Planning risk: properties that could be caught if the government's proposals are legislated. This is a risk-management view, not an obligation. It informs the capital plan and hold or sell decisions, but should stay out of covenant language and lender commitments until secondary legislation exists.

Both lists draw on the same asset-level record described above: the EPC and its expiry, floor area measured on a consistent basis, whether an EPC is legally required, the jurisdiction, any exemption with its evidence, and any on-site generation. What differs is the test applied and the decision each list supports. Keeping them apart also avoids treating MEES as the same obligation as ESOS: a group can fall within ESOS because of its size and, separately, carry MEES exposure on individual lets.

Where we support this work as part of our commercial MEES advisory, it typically covers:

• reconciling the asset register against the PRS Exemptions Register;
• reviewing the cost and payback evidence behind each exemption so that it stands up when a buyer, lender or authority asks;
• adding MEES status to acquisition and disposal packs, so an exemption that does not transfer is picked up before completion;
• mapping which assets sit in which fund or entity, so each list can be reported at the level the board needs.

Where a position needs professional sign-off, it is signed by a qualified NZC assessor.

NZC view

This section is professional interpretation, not official guidance. We would treat any sub-standard let asset without a registered exemption as an open compliance item requiring resolution within the current quarter, regardless of how confident the asset team is that an exemption would be available. Eligibility is judged at registration, and an unregistered exemption provides no protection. Where exemptions are used, we would keep the improvement analysis live rather than shelved: the strongest position at expiry is a documented reassessment showing what changed and why the conclusion did or did not hold.

Five questions for your next portfolio review

• Which of our lets carry MEES exposure under the rules in force today, and which rely on an exemption?
• Which exemptions end in the coming year, and what is the plan for each?
• Which assets would be caught if current proposals became law?
• For those assets, do we hold cost and payback evidence we would be comfortable defending?
• Who owns our response when the government publishes its full position?

Recommended actions

• Reconcile the asset register against the PRS Exemptions Register and identify every sub-standard let property without cover.
• Retrieve and store the evidence supporting each existing exemption, including quotes, calculations, expert opinions and correspondence.
• Diarise every expiry date with a reassessment window ahead of it.
• Add exemption status and evidence transfer to acquisition and disposal checklists, on the basis that exemptions may not survive transfer.
• Where an exemption is likely to expire without a viable improvement route, bring the asset into the capital plan rather than assuming re-registration.
• Run a portfolio-level screen of EPC ratings and lease events to see where exposure is concentrated. Our EPC and MEES risk checker provides an asset-level starting position.

How NZC Consultants can help

We support landlords with exemption eligibility assessment, payback calculations and evidence packs, Register administration, and portfolio-level exemption governance, alongside commercial MEES advisory and commercial EPC assessment.

To review your portfolio's MEES exemption evidence, speak to an NZC Consultants director.

Related commentary from the NZC group: Which assets carry MEES risk? (LinkedIn article, 12 October 2026) and Two MEES lists, not one (LinkedIn, 13 October 2026).

Primary sources

• Non-domestic private rented property: minimum energy efficiency standard — landlord guidance — DESNZ
• Guidance on PRS exemptions and Exemptions Register evidence requirements — DESNZ
• Register a private rented sector energy standards exemption — GOV.UK service
• The Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 — legislation.gov.uk

This article is general commentary on the law in force and published official guidance as at 4 September 2026, updated 13 October 2026. It is not legal advice. Exemption eligibility is property specific and should be verified against the current guidance and the 2015 Regulations, with legal advice taken where the position is unclear.