Planning Permission for a Loft Conversion : Do I Need It?

Loft conversions, like basement and garage conversions, can add much-needed space to your home. One concern you will have when extending your home however is whether you will need planning permission or not. Planning permission for a loft conversion is generally not required. But for your attic conversion to be considered as a permitted development that is exempt from planning permission, you must stick to guidelines. Below are the rules and regulations you need to know about. For a professional build, always choose a vetted loft conversion team.

planning permission for a loft conversion

Planning Permission for a Loft Conversion : Rules and Regulations

If you live in a terraced house, you can convert your attic without planning permission if additional roof space does not exceed 40 cubic metres. This allowance goes up to 50 cubic metres for detached and semi-detached houses. If you want to convert your loft without applying for planning, then your conversion cannot extend beyond the plane of the existing roof slope.

No loft extension can be higher than the existing highest part of the roof. Materials used in your conversion must also be similar to those of your existing home. What this means is that you cannot add a modern glass extension to a traditional brick home. To be exempt from planning permission you must also ensure not to include raised platforms, verandas, or balconies in your plan.

Depending on the area you live in, there may be more rules surrounding converting your home. Before you start planning any type of major building work on your home, consult with your local council to find out if there are any rules you need to know about. To be on the safe side, use the services of a vetted building team for the job. Your builders will be able to inform you of the rules and regulations for the area where you live.

More Considerations

If your loft extension will have side-facing windows, they need to be obscure-glazed. Any roof extension should be set back as far as possible, at least 20cm from the original eaves. Hip to gable extensions are not included in this rule. If you need to enlarge the roof, you may well require planning permission for a loft extension. Your new roof cannot overhang the outside face of the wall of the original build. The 20cm rule is also something that can be explained to you buy your chosen team of builders.

These rules are for planning permission for a loft conversion for homes that are terraced, semi-detached, or detached. They do not apply to maisonettes or flats, or converted homes. For all other types of build, ensure that you seek professional advice to find out whether or not you will be able to convert your attic space. Adding space in your roof will also add value to your home. So ensure that your conversion is a legal one, abides by all the laws and regulations in place, and is designed and built by a professional team of Bristol builders.

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