Do I Need Planning Permission for a Double Garage?

The decision to build a double garage can significantly enhance your home's value and functionality, but it's crucial to first understand whether you need planning permission. Figuring out when you do and when you don't need permission can seem complex, so let's break it down.

This guide will explore the intricacies of planning permission, focusing on double garages. It covers what constitutes permitted development, the key differences between Listed Buildings and Conservation Areas, and when you must seek approval.

Understanding Permitted Development

Permitted Development allows certain types of building projects to commence without requiring planning permission. For garages, these developments typically include single garages, as well as extensions to existing garages or outbuildings, provided they adhere to specific guidelines.

The key criteria include that the garage must not cover more than half of the land around the original house, and the land must be within the curtilage (boundary) of the original house. In most cases, these rules apply to houses, not flats or maisonettes.

Size Limitations

For double garages, the general rule is that external walls and the roof must be of similar materials as the main house and that their height should not exceed the house's eaves. Additionally, they should not project onto any highways without local council approval.

The overall dimensions must not exceed the largest-sized extensions currently allowable under Permitted Development rules. As of 2021, this is 8 cubic meters of additional floorspace.

Location Considerations

Double garages built in front gardens often require planning permission, especially if they might negatively impact the street scene or your neighbors' privacy. However, if the garage is being added to the side or rear of your home and it's not bigger than the existing garage, planning permission might not be required.

Remember, even if your project doesn't seem major, it's always a good idea to check with your local council before starting any work. Each area can have slightly different regulations, and it's better to ensure you're covered from the start.

Listed Buildings and Conservation Areas

If your home is located within a Conservation Area or is a Listed Building, different rules may apply. In these cases, planning permission is more likely to be necessary, even for seemingly minor changes.

Listed buildings are protected due to their architectural or historical significance, while Conservation Areas are designed to preserve the unique character of an area. Building regulations often tighten up in these zones, with garages frequently falling under stricter controls.

Listed Buildings

For Listed Buildings, any changes to their character or fabric, including the addition of a double garage, usually require listed building consent in addition to any other necessary permissions. Local councils strongly recommend engaging a conservation officer to guide you through the process.

Modifications must preserve and enhance the historic interest of the building, so expect more stringent regulations and a greater emphasis on using traditional materials and methods.

Conservation Areas

Within Conservation Areas, certain extensions, including double garages, may require planning permission. In these cases, your local council will consider the potential impact of the proposed garage on the area and the street scene.

Again, engaging with conservation officers early on can streamline the process. They can advise on what works best in your area while helping you navigate the necessary regulations successfully.

Ultimately, the key to building a double garage without running into planning permission issues lies in thorough preparation and understanding of your specific situation. Always start by consulting your local council planning department or a professional, and keep your garage in proportion to your home and within the set size restrictions.