Major Boost for Heat Pump Adoption as Planning Rule is Scrapped
UK Government removes 1m boundary rule to accelerate green energy home heating
In a landmark decision to support greener homes and simplify low-carbon heating installations, the UK government has officially scrapped the contentious 1-meter boundary planning rule for air source heat pumps in England – a move that came into effect on 29 May 2025 2025.
This change removes a key barrier to heat pump installation and makes it easier for homeowners across the country, especially those in urban areas, to install efficient, eco-friendly heating systems without requiring planning permission from the local council, whilst also directly supporting the country’s ambitious goal to install 600,000 heat pumps per year by 2028 under the governments Warm Homes Plan.
Previously, planning hurdles resulted in home installations being delayed by an average of 8-10 weeks, sometimes up to six months. This regulatory reform aims to accelerate the process significantly and raise heat pump usage nationwide
Why the Change Matters
Easier heat pump installations
In many urban areas, especially terraced and semi-detached homes, finding 1 meter of clear space from a boundary was impossible, leading to delays or abandoned installations. Industry data show that UK energy giant Octopus Energy observed over 30% of heat pump orders were dropped due to planning permission issues.
Better options for small gardens
The relaxation directly benefits homeowners with limited outdoor space, enabling them to install heat pumps even right up to their boundary, helping to boost adoption rates in densely populated areas.
Larger & multiple units
The changes also raise the permitted development size of heat pump units from 0.6 m³ to 1.5 m³. Additionally, detached homes can now install two units under permitted development rights. Air-to-air systems now enjoy the same rights as air-to-water models.
Noise & compliance standards
Noise & Compliance Standards Despite looser planning rules, installations must comply with updated MCS 020 Noise Standards, ensuring units remain neighbour-friendly. Formal noise assessments during installation are now mandatory.
Supporting grants & energy incentives
To ease cost barriers, the government is increasing funding to the Boiler Upgrade Scheme (BUS):
- £30 million extra in 2024
- £295 million total in 2025–26. Homeowners are eligible for up to £7,500 in installation grants.
Separately, policymakers are exploring electricity bill relief for heat pump users, possibly removing certain green levies to enhance cost savings
What does this means going forward?
For homeowners and installers, this policy shift clears a major regulatory hurdle, making it simpler to adopt clean heating technology. To benefit from these reforms, consult an MCS-certified installer to check your eligibility for grants and ensure your system meets the necessary standards.