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 2030 EPC C deadline, confirmed by the UK government in February 2025: all private landlords must meet EPC C for all tenancies by 1 October 2030. A property that's currently legal to let (EPC D or E) will become non-compliant in less than four years.
Lenders are ahead of this shift. They're pricing EPC risk into products today — because the collateral they hold will be legally restricted before the next remortgage cycle ends.
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 2030 EPC C compliance deadline. A lender considering your application on an EPC D or E property is effectively agreeing to hold a potentially non-compliant asset as security for part of the term.
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 | 0.05% rate discount across core range for EPC A–C properties | | The Mortgage Works | Up to 80% LTV for EPC A–C (vs 75% standard maximum) | | Various specialist lenders | Dedicated "green" remortgage products for upgrade-ready landlords |
The rate and LTV benefits of hitting EPC C are increasingly bankable. A 0.05% rate reduction on a £200,000 BTL mortgage saves £100/year. An extra 5% LTV headroom (75% → 80%) is the difference between raising equity or not on many deals.
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. If your property is EPC D, the typical upgrade cost to reach C is £500–£3,500 for a cavity-wall property (see our guide to upgrading from EPC D to C). For many landlords, this 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 AND you're ahead of the 2030 deadline.
Option 2: Take a shorter-term fix
If upgrading isn't immediately feasible, a 2-year fixed rate avoids the 2030 deadline overlap problem entirely. You remortgage in 2028, upgrade before then, and refinance on a full-term product with a compliant property.
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 — those properties are still legal to let. But 5-year fixed products are increasingly restricted for below-C properties, because the term extends past the 2030 compliance deadline. 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. Paragon Bank offers a 0.05% rate discount. The Mortgage Works offers 80% LTV (vs 75%) for A–C properties. The better your EPC, the more leverage you have with mainstream lenders.
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 2030 deadline. 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. If your fix expires in 2027 or 2028, that's your last clear window to upgrade before deadline pressure and lender scrutiny both peak simultaneously.
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.