MEES Regulations for Landlords: the EPC E Floor, Exemptions, the £3,500 Cap and Penalties

If you let residential property in England or Wales, the operative rule is short: you cannot lawfully let a domestic private rented property with an EPC rating of F or G unless a valid exemption is registered on the PRS Exemptions Register. That is the Minimum Energy Efficiency Standard, MEES, set by the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 (SI 2015/962). The floor has applied to new tenancies since 1 April 2018 and to every continuing let since 1 April 2020. Scotland and Northern Ireland run separate regimes with different rules, so everything here is England and Wales only.

The enacted regime is what binds you when you sign or continue a tenancy: what sub-standard means, when the prohibition bites, the £3,500 cost cap arithmetic, each exemption class with its evidence and lifespan, how the register works, the penalty ladder, and the tax treatment of the money you spend complying. Where the standard is heading, meaning the proposed EPC C requirement and the £10,000 cap the government has now settled on for it, is a question about policy rather than law, and our EPC C 2030 guide takes that on in depth.

The rule as it binds you today

MEES arrived in stages, and the stage that matters now is the last one:

• 1 April 2018: no new tenancy, renewal or extension of a domestic private rented property below EPC E without a registered exemption.
• 1 April 2020: no continuing to let a domestic private rented property below EPC E without a registered exemption, regardless of when the tenancy began.

Since April 2020 there has been no safe harbour for old tenancies. If your tenant moved into an F-rated flat in 2015 and never left, you are in exactly the same position as someone signing a fresh tenancy this month: the letting is unlawful unless the property is improved to E or an exemption is on the register.

The regime keys off the property's Energy Performance Certificate, so start by checking what your current certificate says and whether it is still valid. Our guide to how EPCs work explains what the assessment measures, and how to book an EPC takes you through getting a fresh one, which is worth doing before anything else if the property has been improved since it was last assessed. A re-rating often turns out to be the cheapest route to compliance there is, and it costs less than a single quote for insulation: see what an EPC costs for current prices.

The same Statutory Instrument also applies a minimum standard to commercial property, on different dates, with a different exemption test and much larger rateable-value-linked penalties: that side is covered in our commercial property MEES guide, and nothing in the domestic rules on this page carries across to it.

What "sub-standard" means and when MEES bites

The prohibition machinery sits in two short regulations. Regulation 22 defines a sub-standard property as one with a valid EPC below band E. Regulation 23 then prohibits letting a sub-standard domestic private rented property, where "letting" covers both granting a new tenancy and, since April 2020, continuing to let under an existing one.

That drafting settles most of the edge cases landlords actually run into:

• MEES bites continuously, not just on signing day. Because continuing to let is caught, a breach runs for as long as the sub-standard letting does. The penalty ladder distinguishes breaches of under and over three months, which only makes sense because the breach is a continuing state, not a single event.
• A tenancy granted in breach is still a valid tenancy. The regulations penalise you; they do not void the contract. Your tenant's rights are unaffected, and you cannot use your own MEES breach to unwind a tenancy you regret.
• No EPC is not a loophole. The definition works off a valid EPC, but a property that legally requires an EPC and does not have one breaches the separate EPC regulations instead. Letting without a required EPC to avoid a bad rating swaps one breach for another: the property is still being marketed and let unlawfully under regulation 7 of SI 2012/3118, and the missing certificate carries its own £200 penalty.

One consequence that used to follow a missing certificate no longer does. Section 21 of the Housing Act 1988, the no-fault notice, was abolished on 1 May 2026, when section 2 of the Renters' Rights Act 2025 was commenced by SI 2026/421, and possession now runs on the reformed Section 8 grounds introduced by section 3 of and Schedule 1 to the same Act. Guidance written before that date links EPC paperwork to the service of a Section 21 notice; that route no longer exists for assured tenancies. What has not changed is the enforcement inside the two sets of regulations themselves.

The regime covers property let on assured tenancies, regulated tenancies and most other domestic lettings where an EPC is required. Holiday lets and genuinely EPC-exempt buildings sit outside it, but the exclusions are narrow and worth checking with an assessor rather than assuming.

Your two lawful routes with an F or G property

With an F or G rated property you have exactly two lawful options, and doing neither is the only wrong answer.

Route one: improve the property to E. The regulations only require "relevant energy efficiency improvements", defined in regulation 24 as measures of the kind listed under the Green Deal framework that are recommended for your property, in practice the recommendations section of your EPC report or an equivalent surveyor's report. Loft and cavity wall insulation, heating controls, low-energy lighting and draught proofing are the workhorses; many F-rated properties reach E for well under the cap. Grant funding can cut the out-of-pocket cost further, and our guide to landlord energy grant schemes covers ECO4, the Great British Insulation Scheme and the Boiler Upgrade Scheme in detail.

Route two: register an exemption. Where improvement is impossible, uneconomic within the cap, blocked by a third party or damaging to the property, the regulations provide specific exemption classes, each with its own evidence requirements and lifespan, registered on the public PRS Exemptions Register. An exemption is not a waiver you apply for and wait on: it is a self-certified entry that takes effect when you register it, backed by evidence you must be able to produce.

The two routes meet at the cost cap, which is where most real decisions get made.

The £3,500 cap arithmetic

The gov.uk landlord guidance states the cap plainly: you are not currently required to spend more than £3,500, including VAT, on energy efficiency improvements per property. The figure is set by regulation 24 of the SI, as amended in 2019, and the exemption you register on reaching it sits in regulation 25. Three mechanical points decide how the cap works in practice:

• VAT is inside the cap, not on top. £3,500 is the gross ceiling. At 20% VAT that is roughly £2,917 of net installer cost, which is worth remembering when comparing quotes.
• Only relevant improvements count. Money spent on energy efficiency measures recommended for the property counts toward the cap. Redecorating, rewiring or a new kitchen does not, even if the work happens in the same project. Spend since 1 April 2019 counts, and unregistered improvement spend from the 1 October 2017 to 31 March 2019 window can also be counted against the cap.
• Grants change the arithmetic. Where third party funding, such as an ECO4 or Great British Insulation Scheme measure, covers the full cost of reaching E, the cap does not apply at all. Where funding covers part of the cost, you top up your own spend only as far as the £3,500 ceiling.

A worked example shows both branches. Ffion owns an F-rated terraced house in Wrexham with an empty loft and unfilled cavity walls. Her EPC recommends insulating both and fitting heating controls; a full works package including new glazing is quoted at £5,200, but the assessor confirms the insulation measures alone should reach band E. She spends £3,480 including VAT on the loft and cavity work, £600 of it covered by a Great British Insulation Scheme contribution, the property reassesses at band E, and she lets lawfully with £3,500 never breached and nothing to register.

Now run the other branch. Suppose Ffion's house was solid-walled and the three quotes she obtained all showed the cheapest recommended measure capable of moving the rating, external wall insulation, costing £9,000 or more. No relevant improvement can be made within the cap, so she registers a high cost exemption, uploading the three quotes as evidence, and can lawfully continue letting for five years. Reach E within £3,500, or evidence that you cannot and register: that is the whole of the cap logic.

The exemption classes: evidence and durations

Six exemption classes are available for domestic property. The first five last five years, running from the date you register them rather than the date the grounds arose; the temporary new landlord exemption lasts six months.

Exemption	Provision	Duration	Evidence required
All relevant improvements made	reg 25	5 years from registration	Details of every relevant improvement installed; a surveyor's report where you are not relying on the EPC recommendations, showing the property remains below E with all relevant improvements done
High cost	reg 25, cap in reg 24	5 years from registration	Three quotes from different installers showing the cheapest recommended improvement would exceed £3,500 including VAT
Wall insulation	reg 24(2), registered under reg 25	5 years from registration	Written expert opinion that cavity, external or internal wall insulation would negatively affect the fabric or structure of the property
Third party consent	reg 31	5 years, or until the current tenancy comes to an end where the refusal came from the tenant (reg 31(3))	Correspondence showing consent was sought from the tenant, superior landlord, lender or planning authority and was refused, or granted only with conditions you could not reasonably meet
Property devaluation	reg 32	5 years from registration	Report from an independent surveyor (gov.uk guidance points to the RICS register) concluding the improvements would reduce the property's market value by more than 5%
New landlord	reg 33	6 months from becoming the landlord	The date and circumstances in which you became the landlord, in the prescribed situations, such as buying a property with a sitting tenant

The durations are not renewable on autopilot. When a five-year exemption expires you must reassess against the position at that date, including current costs and current recommendations, and register afresh if the grounds still hold. Improvement costs falling, grant schemes opening or an EPC methodology change can all mean an exemption that was sound in year one is unavailable in year six.

Watch the new landlord class in particular, because six months is not five years. It exists to stop a purchase completing on day one and a breach starting on day two, nothing more. Buy a tenanted F-rated property and you have six months to improve it to E or register a substantive exemption in your own name; treating the six months as breathing space to do nothing simply schedules the breach.

The PRS Exemptions Register in practice

The register, reached through the gov.uk landlord guidance, is a self-certification service. You create an account, add the property address, select the exemption class and upload the supporting evidence. Nobody vets the entry before it takes effect: regulation 36(2) requires you to register the prescribed information in order to rely on an exemption, and regulation 25(2) then runs that exemption for five years starting with the date of registration. The enforcement authority checks the evidence afterwards, if it chooses to.

The register is public and searchable. Tenants, agents, purchasers and journalists can look up your entry, so the exemption class and the property's sub-standard status are visible information, not a private arrangement with the council. And because the entry is self-certified, the quality of the uploaded evidence is your whole defence. An entry backed by three genuine installer quotes survives a compliance notice; an entry backed by a single estimate from a connected builder invites a penalty for false or misleading information, which carries its own fine and publication.

On sale, do not assume the exemption travels with the property. The regulations attach the registration to the person who made it, and the existence of the six month new landlord exemption tells you what the scheme expects: someone who has just taken on a sub-standard property gets their own short window to improve or register in their own name, not the balance of the outgoing landlord's five years. Buyers pricing a tenanted F or G property should budget for their own compliance route from completion.

Enforcement and penalties: the regulation 40 ladder

Enforcement is local. The local authority polices MEES in its area, with power under regulation 37 of SI 2015/962 to serve a compliance notice demanding information, the EPC, tenancy details and exemption evidence, and under regulation 38 of that same instrument to serve a penalty notice where it is satisfied there has been a breach. Regulation 39 adds the publication penalty: details of the breach published on the public part of the register for at least 12 months, a sanction with more commercial sting for a portfolio landlord than the fine itself.

The financial penalties for domestic property sit in regulation 40, and the structure matters more than the headline figure, because the widely quoted £5,000 is an aggregate cap across limbs, not a per-breach amount:

Breach	Maximum financial penalty	Provision
Letting sub-standard property, breach under 3 months	£2,000	reg 40(2)(a)
Letting sub-standard property, breach 3 months or more	£4,000	reg 40(3)(a)
False or misleading information on the register	£1,000	reg 40(4)(a)
Failure to comply with a compliance notice	£2,000	reg 40(5)(a)
Aggregate cap on financial penalties, per property	£5,000 in total	reg 40(6)

Each limb can carry a publication penalty on top, and the aggregate cap applies to the financial penalties only, per property, so a five-property portfolio in breach faces up to £25,000 across the portfolio.

A short example of the stacking. Dermot lets an F-rated flat in Leeds for five months without an exemption, then ignores the council's compliance notice. The letting breach has run three months or more, so up to £4,000 under reg 40(3)(a); the compliance notice failure adds up to £2,000 under reg 40(5)(a); the arithmetic total of £6,000 is then cut back by the reg 40(6) aggregate cap to £5,000, plus publication of both breaches. As the tax section below explains, none of that £5,000 is deductible against his rental income.

What is enacted, and what is only consulted on

The floor that binds you when you sign a tenancy this month is EPC E with the £3,500 cap. The direction of travel is better documented than it used to be. The government's response to its consultation on improving the energy performance of privately rented homes, published on 21 January 2026, settled on a £10,000 cost cap, a dual-metric standard and a 1 October 2030 compliance date, and said it will seek to lay a statutory instrument with the aim of it coming into force in 2027.

None of that is law. No amending Statutory Instrument has been made: the most recent instrument to touch SI 2015/962 is SI 2026/325, the Renters' Rights Act consequential amendments that took effect on 1 May 2026, and the legislation.gov.uk entry for the 2015 Regulations records no outstanding effects. Until an instrument is laid and made, £10,000 is a decided policy figure and £3,500 is the one you can be penalised against. The proposals deserve a place in your capital planning, as assumptions with dates that have already slipped once, not as deadlines. Our EPC C 2030 guide is the full treatment of what is enacted versus what is proposed and how to plan across the gap.

How MEES spend, grants and penalties are taxed

The money questions do not stop at the register, and they are governed by ordinary tax principles rather than by MEES itself.

Improvement spend splits on the repair-or-addition test. Replacing part of the property with its nearest modern equivalent is an allowable repair, deductible against rental income in the year. HMRC's Property Income Manual at PIM2030 gives single glazing replaced with double glazing as its own example, on the basis that alterations due to advances in technology are generally an allowable repair where the functionality and character of the asset are broadly the same; a broken boiler swapped for an equivalent modern unit works the same way. Capital treatment is for genuine additions and upgrades beyond that modern equivalent: insulation put into a loft or cavity that had none, first-time central heating, extending a system into rooms it never reached, or a specification uplift a repair would not have delivered. Capital spend is not deductible against rental income; it is added to the property's CGT base cost and reduces the gain when you eventually sell. Ffion's insulation, going into an empty loft and unfilled cavities, is in that second category.

Grants reduce base cost. Receipts under ECO4, the Great British Insulation Scheme or the Boiler Upgrade Scheme are matched against the expenditure they fund, so where the works are capital, the grant comes off the amount added to base cost. Ffion adds £2,880 to base cost, not £3,480, because £600 was grant-funded. You can estimate what a base-cost addition does to a future disposal with our capital gains tax calculator.

The £3,500 cap is a compliance ceiling, not a tax category. Spending past the cap voluntarily, to reach a D for marketing reasons, say, changes nothing for tax: every pound still splits capital or revenue on ordinary principles. The cap decides when you may stop spending and register an exemption; it never decides deductibility.

Penalties are not deductible. A regulation 40 financial penalty is punitive, and punitive penalties fail the wholly-and-exclusively test on the principles in HMRC's Business Income Manual at BIM38500 onwards. Dermot bears his £5,000 out of taxed income. Professional fees for genuine compliance, an assessor's report or exemption evidence, are ordinary revenue expenses of the rental business.

Two boundary points. None of this touches Section 24: MEES costs are not finance costs, so the mortgage interest restriction is irrelevant to them. And a company landlord runs exactly the same capital-versus-revenue analysis, with revenue items relieved against corporation tax rather than income tax and capital items feeding the company's chargeable gain computation. Where a single package straddles the line, ask the installer to itemise the quote by measure, because an itemised invoice is what your accountant can actually split.

Getting the compliance sequence right

The efficient order of operations for an F or G property is: check whether a fresh EPC already solves the problem, then price the recommended improvements against the £3,500 cap with grant funding explored first, then improve or register the exemption the evidence genuinely supports, and only then sign or continue the tenancy. Keep the quotes, surveyors' opinions, correspondence and invoices together as you go. That one folder is doing three jobs at once: it is your exemption evidence if the council serves a compliance notice, your record of what counted toward the cap, and your CGT base-cost file when the property is eventually sold. Only the first of those three is MEES, and the other two are the ones nobody reconstructs successfully three years later.