If you're trying to remortgage a buy-to-let property with an EPC rating below C, you may already have hit a problem: some lenders are refusing 5-year fixed products on below-C properties. Others are offering better rates and higher borrowing limits to landlords whose properties already hit EPC A–C. The mortgage market is factoring EPC ratings into every BTL decision, and it's happening now, not in 2030.
This guide explains what lenders are doing, why the 5-year fix is the most urgent issue, and what your options are if your property isn't at C yet.
Why EPC ratings now affect your mortgage
The legal backdrop
Since April 2020, all privately rented properties in England and Wales must have a minimum EPC rating of E. Lenders have always refused to lend on EPC F and G properties, they're illegal to let, which makes them a lending risk. This isn't new.
What is new is the proposed 2030 EPC C standard. In its response to the "Improving the energy performance of privately rented homes" consultation, published 21 January 2026, government said it intends to require EPC band C across the private rented sector in England and Wales from 1 October 2030. That is stated policy, not law. It needs an Act of Parliament to take the powers, then a statutory instrument amending the 2015 Regulations. Nothing has been laid before Parliament yet, and a near-identical proposal was scrapped in September 2023.
Lenders are not waiting for the legislation. They are pricing the possibility into products today, because if it does become law, the collateral they hold would be legally restricted before the next remortgage cycle ends. Band D remains perfectly legal to let in the meantime.
How lenders see EPC risk
A buy-to-let mortgage is secured against a rental property. If that property becomes non-compliant mid-term, meaning the landlord can no longer legally let it, the lender's security deteriorates. Lenders are managing this risk in two ways:
- Refusing to lend past the compliance deadline, particularly on longer fixed terms
- Rewarding landlords with compliant properties, better rates and higher LTV for EPC A–C
The 5-year fix problem
This is the most acute issue in 2026, and the one most landlords don't see coming until they're in front of a broker.
If you apply for a 5-year fixed rate mortgage in 2026, the term runs until 2031, one year past the October 2030 date government has proposed. A lender considering your application on an EPC D or E property is effectively agreeing to hold an asset that could be non-compliant for part of the term if the proposal is legislated.
More and more mainstream lenders are starting to decline 5-year fixed products on below-C properties, or adding conditions. Landlords who assumed their EPC D property was fine to remortgage on a long fixed deal are being turned away.
What this means practically: If your property is EPC D or E and you want a 5-year fix, either upgrade to C first, or take a shorter-term product (2-year or tracker) and plan the upgrade before you remortgage again.
Lenders offering better deals for EPC A–C
It's not all stick. Lenders are also building in rewards for energy-efficient properties, and these can be meaningful.
| Lender | EPC incentive |
|---|---|
| Paragon Bank | "Green" products for EPC A–C priced 0.05% below the equivalent non-green product (Paragon buy-to-let product guide, 12 August 2026: 2-year fixes from 3.55% green vs 3.60% non-green, 5-year fixes from 4.95% vs 5.00%) |
| The Mortgage Works | Lending above 75% LTV requires EPC C or above, so a D or E rated property needs a 25% deposit rather than 20% (TMW intermediary lending criteria and buy-to-let eligibility pages, checked 19 August 2026) |
| Various specialist lenders | Dedicated "green" remortgage products for upgrade-ready landlords |
Both of those are checkable and both are modest. Paragon's 0.05% saves £100 a year on a £200,000 mortgage. The TMW criterion is the one that bites harder: the extra 5% LTV headroom (75% → 80%) is the difference between raising equity or not on many deals.
Rates and criteria move constantly. Confirm the current position with the lender or a broker before you plan around either figure.
The mortgage market is effectively building the upgrade cost-benefit case for you. Upgrade to C, borrow more efficiently.
What landlords with below-C properties can do
If your property is EPC D, E, or below and you're facing a remortgage, you have four realistic options:
Option 1: Upgrade before remortgage
This is the cleanest path. A D-rated cavity-wall property is usually the cheapest starting point, because the gap to C is often a handful of low-cost measures rather than a fabric rebuild. Costs vary far too much by property to quote a single figure, so get a quote against your own EPC recommendations report: our guide to upgrading from EPC D to C walks through what drives the number. For many landlords the work is achievable within a few months, well before a remortgage is needed.
The upgrade pays back on two fronts: you qualify for better mortgage terms now, and you are ahead of the standard if it does come in.
Option 2: Take a shorter-term fix
If upgrading isn't immediately feasible, a 2-year fixed rate avoids the 2030 overlap problem entirely. You remortgage in 2028, upgrade before then, and refinance on a full-term product with a property at C.
The cost: 2-year fixes typically carry a slightly higher rate than 5-year products. But the flexibility and reduced refusal risk may be worth it.
Option 3: Use a specialist lender
Not all lenders are tightening. Specialist lenders like Pepper Money have actually relaxed their EPC requirements, in January 2026, they extended BTL lending on EPC D and E properties for HMOs. Other specialist BTL lenders take a similar pragmatic view.
This route suits landlords who need a short-term solution while planning a longer-term upgrade. Rates on specialist products are typically higher, but they're available.
Option 4: Act now before criteria tighten further
The trend is in one direction. Mainstream lenders adding EPC criteria is accelerating, Pepper Money relaxing rules is the exception, not the direction of travel. If your property is EPC D and you plan to hold it, getting an upgrade scheduled before your next remortgage window protects against a harder conversation in 2027 or 2028.
Which lenders have EPC requirements? (2026 overview)
The full picture is complex and changes frequently, always check with a broker. But the general pattern in 2026:
| Lender type | EPC approach |
|---|---|
| Mainstream BTL lenders | Will not lend on F/G (illegal); increasing scrutiny on D/E; better terms for A–C |
| Specialist BTL lenders | More flexible, some accept D/E; higher rates |
| All lenders | Will not lend on property below EPC E (legal floor, cannot let it) |
| 5-year fixes | Increasingly refused or restricted for below-C properties across major lenders |
The safest assumption for planning: if your property is EPC D or E and you have a remortgage due in the next 1–3 years, start the upgrade conversation now.
Frequently asked questions
Will my BTL mortgage be refused because of my EPC rating?
Not for EPC D or E at the moment. The legal minimum to let in England and Wales is band E, and has been since 1 April 2020, so a D is fully compliant. But 5-year fixed products are increasingly restricted for below-C properties, because the term extends past the October 2030 date government has proposed. Your best protection is upgrading to C before your next remortgage.
Does my EPC rating affect my mortgage interest rate?
Yes, in your favour if you're at A–C, though the effect is smaller than most landlords expect. Paragon Bank prices its green buy-to-let products for EPC A–C 0.05% below the equivalent non-green product (product guide dated 12 August 2026). The Mortgage Works will only lend above 75% LTV on a property rated EPC C or above, so the benefit there is borrowing capacity rather than rate. The better your EPC, the more leverage you have with mainstream lenders. Both positions were correct as at 19 August 2026 and both can change without notice, so check with the lender.
Can I still remortgage if my property is EPC D?
Yes, in most cases, on shorter fixed terms or with specialist lenders. The issue arises specifically with 5-year (and longer) products, where the term extends past the proposed October 2030 date. A broker who specialises in BTL can identify which lenders will still offer 5-year products and on what conditions.
What happens to my existing mortgage if EPC rules change?
Your existing mortgage isn't affected mid-term. The risk appears at remortgage, when you apply for a new product, lenders assess current criteria. Properties that were fine under 2022 criteria may face stricter questions under 2026 and 2028 criteria.
What's the biggest mistake landlords make on this?
Assuming 2030 is "a long time away" and not factoring EPC into their next remortgage. Even though the standard is not law yet, lenders are already pricing it. If your fix expires in 2027 or 2028, that's your clearest window to upgrade before lender scrutiny tightens further.
Mortgage products and lender criteria change frequently. This article reflects the market as of March 2026. Always consult a qualified BTL mortgage broker for product-specific advice. See our guide to EPC fines and non-compliance penalties for what happens if properties aren't upgraded before the deadline.