The Future Homes Standard (FHS) does not apply to your existing property. You are not legally required to retrofit your home to meet the new-build standards, nor must you replace your gas boiler or install a heat pump because of this particular legislation.
However, while the FHS itself leaves existing homes alone, several related changes will affect homeowners and landlords in the coming years.
What the Standard Requires
The FHS sets performance targets rather than mandating specific technologies, but the expected outcomes are clear:
- Low-Carbon Heating: The standard effectively rules out gas boilers in new homes, with heat pumps expected to become the primary heating solution .
- High Energy Efficiency: New homes must have much better insulation and fabric performance, emitting on average at least 75% less carbon than homes built to 2013 standards .
- On-Site Renewable Energy: A new legal requirement means most new homes will need to include on-site renewable electricity generation, such as solar panels, with some exemptions for practical constraints or higher-risk buildings.
The UK Future Homes Standard (FHS) is a major update to building regulations in England, designed to radically reduce the carbon footprint of new homes. Its core principle is making new homes “zero carbon ready,” meaning they will produce no carbon emissions as the national electricity grid decarbonises, without needing expensive retrofits later.
Your EPC Is Changing
The way energy performance is measured for existing homes is being reformed, which will affect anyone selling or renting a property.
The current single A–G rating is being replaced by four separate metrics: Fabric Performance, Heating System, Smart Readiness, and Energy Cost. Under the proposed system, a property with a gas boiler would not be able to achieve a C rating on the Heating System metric, even if the home is well insulated. The new EPC format is expected to be introduced from the second half of 2027.
The Rental Sector Faces Stricter Rules
If you are a landlord, the pressure to improve your property is real, even though the FHS does not apply to you directly.
Privately rented homes in England will need to reach EPC C by 1 October 2030. This is a separate regulatory requirement from the FHS, but it means landlords of older, less efficient properties may need to invest in insulation, heating upgrades, or other measures to keep their properties lettable.
Help Is Available If You Choose to Upgrade
The government is not compelling existing homeowners to act, but it is providing support for those who want to reduce bills and carbon emissions.
The Warm Homes Plan represents a significant public investment in home upgrades, aimed at supporting households with measures to reduce bills and improve energy security. For those considering improvements, better insulation will show clearly in the new Fabric Performance metric, and a heat pump would dramatically improve the Heating System rating. Plug-in solar panels are also becoming available as a lower-cost option for generating electricity.
The Bottom Line
The Future Homes Standard is a rule for new homes, not a retrofit mandate. Your existing property is not affected by the standard itself. The changes that will affect you are the reformed EPC system and, for landlords, the 2030 rental efficiency deadline. Any upgrade you undertake beyond that is a choice, supported by government funding schemes, rather than a legal obligation under the FHS.
