Homeowners in England considering window upgrades or other home improvements this summer should check whether planning permission is required before starting work, according to an expert from the Planning Portal. John Van Eker, principal town planner at the Planning Portal—a partnership between the Ministry of Housing, Communities and Local Government and TerraQuest—said many projects may fall under permitted development rights, but this is not always the case.
“Many of the improvements people consider during the summer months can involve a significant investment, so it's important to understand any planning requirements before work begins,” Van Eker said. He added that while many projects may be allowed without permission, properties in conservation areas, National Parks, areas of outstanding natural beauty, and listed buildings face stricter rules.
Rules for Replacing Windows
Upgrading to double or triple glazing can improve comfort and reduce heat entering the home. Like-for-like replacement windows usually do not require planning permission. However, a change in materials or appearance typically will require planning permission, and additional controls apply to listed buildings and designated areas.
Insulation, Shutters, and Solar Panels
Internal insulation works generally do not need planning permission, but external insulation may require approval if it alters the external appearance, especially in protected areas or listed buildings. External shutters and awnings, including retractable ones, can be considered development and may require a planning application. Solar panel installations may be carried out under permitted development rights, but restrictions apply in conservation areas and AONBs. Heat pumps, both air source and ground source, are increasingly popular but homeowners must check planning requirements regarding location and visual impact.
How to Check Requirements
Many energy-efficiency improvements can be done without planning permission, but requirements vary by property. The Planning Portal offers advice, resources, and tools. Homeowners seeking formal confirmation can apply for a Lawful Development Certificate, which provides a legally recognised decision from the Local Planning Authority. Booking an appointment with the Planning Guidance Service is also possible.
