Loft conversions - Planning

Do I need Planning Permission?

Many loft conversions do not need planning permission at all. However you should obtain advice as you may need it in your case. Some examples of those which require planning permission are

• if the loft conversion changes the outside appearance of your property
• if the new room(s) will constitute a change of use, for instance an office
• if the area exceeds 50m²
• if the loft is converted into more than two habitable rooms
• if you live in a conservation area

An architect will be able to advise you on whether you need planning permission, or you could contact your Local Authority yourself. Our Council Links page will direct you to your own Local Council's website for more information on planning regulations in your area. If you need to apply for planning permission the Planning Department will require several copies of your drawings and a fee. Then your planning application will be placed on the Planning Register ( which is available for members of the public to view) and your application will be published in the local press. You should receive a decision from the Planning Department within eight weeks, or if it will take longer they should write to you and and ask for an extension of time.

Loft Conversions Loft Conversions has almost 300 full colour illustrations, step-by-step notes, tips and advice throughout. It is designed to assist anyone planning a loft conversion, and to ensure the project meets all the requirements of 'good building practice' and complies with building regulations

Building Regulations

Even if planning permission is not necessary, the design of your loft extension must meet building regulations. These cover such things as fire escapes, ventilation, and, if the property is semi detached, sound insulation

Party Wall legislation will need to be considered. In principle you can do work on a party wall, but the adjoining owner needs at least 2 months notice before work commences.

The Building Control Department of your Local Council will require several copies of all your drawings. Your application will be placed on the Building Register. There will be a fee for this. Any member of the public may look at the register and may lodge an objection. You should receive a decision from the Building Control Department within five weeks..