What is the minimum EPC rating for rental properties in 2026?

The current minimum EPC rating for rented properties in England and Wales is E. From 2028, new tenancies will require a minimum EPC C rating. Existing tenancies have until 2030. Scotland already requires EPC C for new tenancies from 2025 (phased in from 2024). Properties rated F or G cannot currently be let unless an exemption applies.

How much does it cost to improve an EPC rating from D to C?

Typical costs range from £1,500 to £8,000 depending on the property type and existing fabric. Common improvements: cavity wall insulation (£400-£1,200), loft insulation top-up (£300-£500), LED lighting (£50-£200), smart heating controls (£200-£800), new boiler (£1,500-£3,500), solar PV panels (£3,000-£7,000). Most D-rated properties can reach C with £2,000-£4,000 of targeted work.

Are there exemptions to the minimum EPC C requirement?

Yes. Exemptions include listed buildings where improvements would unacceptably alter their character, properties where all cost-effective improvements have been made (capped at £3,500 for the current E band minimum, expected to rise for the C target), temporary exemptions for new landlords (6 months), and where a tenant refuses consent for improvements. All exemptions must be registered on the PRS Exemptions Register.

Can I get a mortgage on a property with an EPC rating below C?

Yes, you can still get a buy-to-let mortgage on properties with EPC D or E ratings. However, lenders increasingly offer preferential rates for properties with EPC A-C ratings. Paragon, Nationwide and Virgin Money all offer green mortgage products with lower rates for energy-efficient properties. As the 2028 deadline approaches, lenders may tighten criteria on lower-rated properties.

Do green mortgages offer better rates for energy-efficient properties?

Yes. Several lenders offer discounted rates for properties with EPC A-C ratings. Paragon offers BTL rates from 3.55% for EPC A-C properties compared to 4.25%+ for lower ratings. Nationwide cut BTL rates twice in June 2026 and offers green discounts. Virgin Money, Leeds Building Society and The Mortgage Works all have green product ranges. The typical discount is 10-30 basis points off the standard rate.

EPC Requirements for UK Landlords 2026: Minimum C Rating Guide

Every UK buy-to-let landlord needs an EPC rating of at least C for new tenancies by 2028, and for existing tenancies by 2030. The first milestone is 18 months away and the new HHSRS framework took effect today. Most D-rated properties can reach C with targeted improvements costing £2,000 to £4,000, and green mortgage incentives mean the work can partially fund itself.

This guide covers everything a UK property investor needs to know about EPC requirements in 2026: the current rules, the 2028 and 2030 deadlines, how to improve your rating, what exemptions exist, and what the green mortgage market offers landlords who act early. You can also use our rental yield calculator to model the impact of improvement costs on your net returns.

Current EPC requirements for rental properties

Since April 2020, all privately rented properties in England and Wales must have an EPC rating of at least E. Properties rated F or G cannot be let, and doing so can result in civil penalties of up to £5,000. The rule applies to both new and existing tenancies, with exemptions available only in limited circumstances (see exemptions section below).

Scotland has already moved ahead: from 2025, all new tenancies in Scotland require an EPC C rating, with the requirement extending to all tenancies from 2028. The divergence between the UK nations means portfolio landlords with properties in Scotland face a tighter timeline than those operating solely in England.

The current minimum E band applies to all buy-to-let properties, whether let to a single household or as an HMO. An EPC lasts ten years, so if your property had one done in 2018, it is still valid until 2028. But if you plan to sell or refinance in the meantime, a current EPC with recommendations for improvement is worth having before you approach lenders.

The 2028 and 2030 deadlines explained

The government confirmed in its 2023 consultation response that the minimum EPC rating for privately rented properties in England and Wales will rise to C. The implementation timeline is:

2028: All new tenancies must have an EPC C rating. This covers every new assured shorthold tenancy granted from that date, including renewals and periodic tenancies that become new tenancies.
2030: All existing tenancies must meet the C standard. This final phase covers all remaining tenancies, including statutory periodic tenancies following a fixed term.

There have been rumblings in the property press about potential delays. The NRLA has lobbied for an extension, arguing that the supply chain for improvements cannot handle the volume of work required. However, with the Renters' Rights Act now law, the new HHSRS framework in force from today, and the government showing no sign of backtracking on energy efficiency, landlords should plan on the current timeline holding. The risk of a delay is not zero, but the cost of waiting is a last-minute scramble at higher prices.

How many rental properties are below C?

Official statistics from the Department for Energy Security and Net Zero show that around 60% of privately rented homes in England and Wales already meet the C standard or above. That leaves roughly 1.4 million rental properties below C. The distribution of lower-rated properties is not uniform:

Pre-1919 properties: Over 55% of pre-1919 housing stock in the private rented sector is rated D or below. These are typically solid-wall construction with single glazing and poor loft insulation.
Interwar and post-war (1919-1980): Around 35% of properties built in this period are below C. Cavity walls and loft spaces make these easier to improve cost-effectively.
Post-1980: Less than 10% of post-1980 rental properties are below C. Modern building regulations effectively baked in higher standards.

For portfolio landlords, the takeaway is clear: if your portfolio is weighted toward older properties, the proportion that needs work is disproportionately high. An EPC audit across your portfolio should be a priority this year, not next.

Improving your EPC rating from D to C

Most D-rated properties can reach C with a combination of low-cost and medium-cost improvements. Here are the most effective measures, ranked by cost-effectiveness:

Low-cost improvements (under £500)

Loft insulation top-up: If your loft has less than 270mm of insulation, topping up costs £300-£500 and can add 5-10 SAP points. This is the single cheapest way to move from D to C.
LED lighting: Replacing all bulbs with LEDs costs £50-£200 and can add 2-4 SAP points. This is a trivial cost with an immediate payback.
Draught-proofing: Sealing doors, windows and floorboards costs £100-£300 and can add 2-5 SAP points, depending on the property.
Heating controls: Installing smart thermostats, thermostatic radiator valves and programmer upgrades costs £200-£800 and can add 3-6 SAP points.

Medium-cost improvements (£500-£3,000)

Cavity wall insulation: For cavity-wall properties built after 1920, this costs £400-£1,200 and adds 5-15 SAP points. The highest-impact single improvement for most properties.
Boiler upgrade: Replacing an old G-rated boiler with a new A-rated condensing boiler costs £1,500-£3,500 and adds 5-10 SAP points. Consider a heat pump if the property is suitable, though the upfront cost is higher.
Secondary glazing: For single-glazed properties where double glazing is not feasible (listed buildings, conservation areas), secondary glazing costs £500-£2,000 and adds 3-7 SAP points.

Higher-cost improvements (£3,000-£8,000)

Double glazing: Full replacement of single-glazed windows costs £3,000-£7,000 for a typical three-bedroom house and adds 5-10 SAP points. The payback is longer but the improvement in tenant comfort is significant.
Solid wall insulation: For pre-1920 properties with solid walls, internal or external wall insulation costs £4,000-£8,000 and adds 10-20 SAP points. External insulation is more effective but more expensive and requires planning permission in some areas.
Solar PV panels: A 3-4kW system costs £3,000-£7,000 and adds 10-20 SAP points, often pushing a D-rated property straight to C or even B. The feed-in tariff savings offset some of the cost over time.

The key insight for most D-rated properties: loft insulation top-up, cavity wall insulation and a heating controls upgrade together cost around £1,500-£2,500 and typically deliver enough SAP points to reach C. That is less than two months of rent on an average UK property. For the specific impact on your property, commission an EPC assessment with recommendations prioritised by cost-effectiveness.

EPC costs and the spending cap

Under the current E band minimum rules, landlords must spend up to £3,500 on energy efficiency improvements to reach E. If the property stays below E after £3,500 of improvements, a five-year exemption applies. The government has not yet confirmed the spending cap for the C minimum, but the 2023 consultation proposed a higher cap to reflect the greater improvement needed. Industry estimates suggest a cap of £5,000-£10,000 is likely.

For a realistic assessment of what your property needs, commission an EPC assessment (typically £60-£120) and read the recommendations report. It will list improvements in order of cost-effectiveness and provide estimated costs and SAP point gains. Use this as your roadmap, not a generic checklist. Our deal analyser calculator can help you model the impact of improvement costs on your projected returns.

Green mortgages: turning compliance into profit

One of the most underappreciated aspects of EPC improvements is the mortgage rate benefit. Several lenders now offer green buy-to-let mortgages with preferential rates for properties rated A-C. The discount typically ranges from 10 to 30 basis points off the standard rate, which on a £200,000 mortgage at 4.5% translates to £200-£600 per year in interest savings.

Paragon Bank led the market with its green product range, offering BTL rates from 3.55% for EPC A-C properties (compared to 4.25%+ for lower ratings). As we covered in our BTL mortgage rates update, Nationwide cut its green product rates twice in the week of 15 June. Virgin Money, Leeds Building Society, The Mortgage Works and Precise Mortgages all have green product ranges.

The financial case works like this: if £3,000 of improvements lifts a property from D to C, and the green mortgage discount saves £400 per year in interest, the improvements pay for themselves in 7.5 years through lower mortgage costs alone, before accounting for the rental premium that energy-efficient properties can command. Research from Rightmove shows EPC C-rated properties rent for 3-5% more than equivalent D-rated properties.

If you are looking to remortgage or expand your portfolio, check green product availability with a specialist broker. A regulated whole-of-market broker like Progressive Property can identify the best green BTL rates across the market and factor EPC improvement costs into your refinance strategy.

Exemptions and how to register them

Exemptions to the minimum EPC standard exist, but they are time-limited and require active registration on the PRS Exemptions Register. There is no automatic exemption:

All cost-effective improvements made: If you have spent up to the cap (£3,500 for E band, likely higher for C band) and the property is still below the minimum, a five-year exemption applies. You must register it on the PRS Exemptions Register and provide evidence of the improvements made and costs incurred.
Tenant refusal: If a tenant refuses consent for improvements (e.g., refuses access for cavity wall insulation), a temporary exemption applies for the duration of that tenancy. The exemption lapses when the tenancy ends.
Third-party consent refused: If a superior landlord, planning authority or mortgage lender refuses consent for improvements, an exemption may apply for up to five years.
Listed buildings: Properties listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 are exempt if the improvements would unacceptably alter their character or appearance.
New landlord exemption: New landlords have six months from becoming a landlord to comply with the minimum standard. This covers accidental landlords who inherit a property and need time to arrange improvements.

The PRS Exemptions Register is maintained by the Department for Energy Security and Net Zero. Registration is free and can be done online. Failure to register an exemption means the EPC minimum applies to you, even if your property genuinely cannot meet it.

EPC and the wider regulatory picture in 2026

EPC compliance does not exist in isolation. The new HHSRS framework that takes effect today (23 June 2026) adds an additional layer of enforcement for properties with serious hazards, and while EPC and HHSRS assess different things (energy efficiency vs. health and safety), the overlap is significant. Properties with poor EPC ratings are more likely to have excess cold hazards, one of the 21 hazard categories under the HHSRS. A property rated F or G for EPC creates a strong presumption that a Category 1 excess cold hazard exists, exposing the landlord to civil penalties of up to £40,000.

The Renters' Rights Act also introduces the Decent Homes Standard for the private rented sector, which includes an energy efficiency component. The standard explicitly requires properties to have a reasonable degree of thermal comfort, which the government interprets as meeting or progressing towards the EPC C target.

For a full breakdown of the Renters' Rights Act timeline and the HHSRS penalty framework, see our dedicated guides. The regulatory direction of travel is clear: higher standards across every dimension, with enforcement powers that are real and being actively used.

Strategic approach for portfolio landlords

For landlords with multiple properties, the scattergun approach is the wrong one. Here is a systematic approach:

Audit your portfolio. Pull the EPC register data for every property. Identify which are below C and by how many SAP points. Sort by gap size relative to improvement cost.
Prioritise by return. Properties closest to C (mid-to-high D) with simple improvement paths (cavity walls, loft access) should go first. They deliver the quickest compliance and the earliest green mortgage benefits.
Align with refinance timing. If a property is due for remortgage in 2027, plan the EPC improvements for 2026 so you can refinance onto a green product with the better rate. The improvement cost is offset by lower mortgage payments from day one.
Factor into acquisition criteria. For any new purchase, budget for EPC improvement work as part of your refurbishment costs. A property at D with a clear path to C for £3,000 is a better investment than one at E that needs £8,000 of solid-wall insulation. Our deal sourcing and BRRR strategies cover how to build this into your acquisition model.
Phase the work. If your portfolio has multiple sub-C properties, spread the improvements over two years to avoid supply chain bottlenecks and cashflow strain. The 2028 deadline for new tenancies gives you 18 months, which is enough for a phased programme.

Use our deal analyser to model the full financial picture: purchase price, improvement costs, green mortgage rate savings, rental premium from higher EPC rating, and the impact on net yield. Running the numbers before committing to a programme ensures you prioritise the properties that deliver the best return on compliance spend.

Key takeaways

The current minimum EPC rating for rental properties is E. From 2028, new tenancies will need C. From 2030, all tenancies will need C.
Around 60% of rental properties already meet C. Of the remaining 40%, most D-rated properties can reach C for £2,000-£4,000 of targeted improvements.
Loft insulation, cavity wall insulation and smart heating controls are the three highest-impact, lowest-cost improvements for most properties.
Green mortgages offer 10-30 basis point rate discounts for EPC A-C properties, which can offset the cost of improvements over time.
Exemptions exist but must be registered on the PRS Exemptions Register. Failure to register means the minimum applies by default.
EPC compliance is now linked to HHSRS enforcement. Properties rated F or G create a strong presumption of an excess cold hazard under the new framework.
Audit your portfolio now, prioritise by gap size and refinance timing, and factor improvement costs into every acquisition decision.
For specialist mortgage advice on green BTL products, speak to a whole-of-market broker like Progressive Property.
Use the D for Deals calculators to model improvement costs, green mortgage savings and the impact on net rental yield before committing to any work.