Will I Need Planning Permission if i build Conservatory?
In most cases, you do not need planning permission to build a conservatory in England, as many are covered under permitted development rights outlined in the General Permitted Development Order 2015 (GPDO 2015), Class A. These rights allow for single-storey rear extensions, including conservatories, provided specific criteria are met, such as size limits and distance from boundaries. However, exceptions apply for listed buildings, conservation areas, and larger extensions that exceed permitted development thresholds. This guide explains when planning permission is required, highlights building regulations you must comply with, and provides practical resources from Adapt Planning to help you get started.
Are Conservatories Treated the Same as Other Extensions?
Yes, under the GPDO 2015, conservatories are treated the same as any other single-storey extension for planning purposes. They fall under Class A of the GPDO, which governs the enlargement, improvement, or alteration of a dwellinghouse. This means that the rules for permitted development apply equally to conservatories and single-storey rear extensions.
Permitted Development Rights for Conservatories
Permitted development rights allow certain types of extensions and alterations to be carried out without the need for full planning permission. For a conservatory to qualify as permitted development under Class A, it must meet the following criteria:
- Location and Size:
- The conservatory must not extend beyond the rear wall of the original dwellinghouse by more than:
- 4 metres for detached houses.
- 3 metres for all other houses.
- For larger rear extensions (up to 8 metres for detached houses and 6 metres for others), a prior approval process is required.
- Height Restrictions: The maximum height of the conservatory cannot exceed 4 metres. If within 2 metres of a boundary, the eaves height must not exceed 3 metres.
- Coverage: No more than 50% of the total land area around the house can be covered by additions or other buildings.
- Additional Restrictions: The extension must not be forward of the principal elevation or side elevation fronting a highway. Properties in conservation areas, Areas of Outstanding Natural Beauty, or National Parks may have additional restrictions.
For detailed guidance on permitted development rights, visit our Permitted Development page.
Building Regulations for Conservatories
While a conservatory may not require planning permission, it must comply with building regulations if it does not meet specific exemptions. Building regulations ensure the safety, energy efficiency, and structural integrity of the construction. Key considerations include:
- Size and Separation: The conservatory must be less than 30 square metres in floor area. It must be separated from the main house by external-quality walls, doors, or windows.
- Heating Systems: Any heating installed in the conservatory must have separate temperature and on/off controls from the main house.
- Structural Stability: The foundations and overall structure must be stable and capable of supporting the roof and walls.
For more information, refer to the LABC building regulations guidance.
Applying for Planning Permission
If your conservatory does not meet the permitted development criteria, you will need to apply for planning permission. This process involves submitting detailed plans and supporting documents to your local planning authority. At Adapt Planning, we offer professional services to help streamline your planning application process. Visit our Planning Applications page for assistance.
Adapt Planning Can Advise You On Your Conservatory Project
A conservatory is a fantastic way to enhance your home, but it’s crucial to understand the planning and building regulations involved. Most conservatories fall under permitted development, but larger or more complex projects may require planning permission. For tailored advice and professional assistance, explore our services at Adapt Planning.
