BUCKINGHAMSHIRE, UK. March 24th, 2026 – New energy efficiency regulations could create what property experts are calling an “EPC time bomb” in the UK rental market, with millions of privately rented homes potentially requiring costly upgrades to remain legally lettable by 2030.
Around 2.9 million privately rented homes in England currently have an EPC rating of D or below, meaning they would require improvements to meet a future EPC C standard. Government impact assessments estimate the average cost of upgrading a rental property to EPC C could be around £5,400, with a proposed spending cap of up to £10,000 per property.
Many landlords in the UK are small-scale investors who own just one or two rental properties, meaning compliance costs could significantly impact their finances. Combined with higher mortgage rates, new licensing schemes, and increasing regulatory requirements, the cost of maintaining rental properties is continuing to rise.
For landlords with older housing stock, particularly Victorian and early 20th-century homes, the upgrades required to meet EPC targets could involve significant structural work. Improvements such as wall insulation, upgraded heating systems, double glazing, or renewable energy installations may all be needed to reach the required efficiency rating.
Property experts warn that the combination of regulatory pressure and upgrade costs could encourage some landlords to leave the market altogether, potentially reducing the supply of rental homes available to tenants.
Jason Harris-Cohen, Managing Director at LandlordBuyer, said: “We’re increasingly hearing from landlords who are concerned about how future EPC requirements will affect their properties. For many owners, particularly those with older homes, the cost of reaching an EPC C rating can be substantial and may simply not be financially viable.”
He added that for landlords who are considering exiting the rental market, or wanting to sell a house with tenants, it can be a practical solution that avoids unnecessary disruption for tenants.
“Many landlords assume that selling a rental property automatically means asking tenants to leave first, but that isn’t always the case. In reality, properties can be sold with tenants still living in them, which can help avoid evictions and maintain stability for renters.”
Services that specialise in purchasing tenanted properties are becoming an increasingly popular option for landlords who want a straightforward sale without the delays or complications that can arise on the open market.
While energy efficiency improvements aim to modernise the UK’s housing stock, the scale and cost of the upgrades required may leave some landlords reassessing whether remaining in the rental market is sustainable long term.
ENDS