What are 'L' Regs & Will I Need Planning Permission for my Conservatory?

Building Regulations Part L ('L' Regs)

Document  L is part of the Building regulations for England and Wales that sets the standards for energy efficiency in buildings. Similar standards are applicable in Scotland, Northern Ireland and the Republic of Ireland. As part of the Worldwide Kyoto agreement, the UK Government has committed to reduce emissions of greenhouse gases, such as carbon dioxide. Almost half of the carbon dioxide emissions in the UK are generated from energy that’s used to heat, light and cool buildings. The revisions to Document L cover the construction of new dwellings (houses) and non-domestic buildings, such as offices and public buildings. In addition, work on existing housing, such as replacement windows installed as home improvements and conservatories not separated from the house are also covered.

Planning Permission

In England and Wales you will not usually require planning permission provided you do not exceed the permitted development limit for your property (which is normally between 50-70 cubic metres). If you have already had an extension then it is likely that planning permission will be required for your conservatory.

Planning permission will always be required in respect of Grade I, II & III listed buildings and conservation areas.

If you have any doubts, then we, at Vantage, will be only too pleased to advise you.

Will I Need Building Regulations to Build a Conservatory?

Generally speaking conservatories on residential properties are exempt from Building Regulations.

Below are examples in respect of some of the Exemption Criteria. These criteria must be met for a conservatory to be classified as exempt.

1. The conservatory has a completely transparent or translucent roof.
2. The conservatory has an internal floor area not exceeding 30 square metres.
3. The conservatory is sited at ground level.
4. The conservatory is permanently separated from the remainder of the property by means of a door – ie not open plan.
5. The conservatory does not contain any drainage facilities (ie sink, WC or washing machine).

 At  Vantage, we will do all the necessary paperwork on your behalf and our specialist Architects will liaise with the Local Planning Authority. There will be two fees that will have to be paid – the Architect’s and the Local Planning Authority’s.

For FREE expert advice and FREE design service, please contact us on 01775 670111 or why not in this high tech world send us an email - rodney@vantagewindows.com