Industrial buildings and Warehouse planning permission

The erection, extension or alteration of an industrial building or warehouse is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions shown below.

Specific to new industrial buildings and warehouses:

• No new building to be higher than 5m, if within 10m of the curtilage boundary. In other cases no new building to be higher than the highest building within the curtilage boundary or 15m - whichever is lower
• No new building to exceed gross floor space of 100 square metres in designated land and sites of special scientific interest. In other cases 200 square metres.

Specific to extending or altering industrial buildings and warehouses:

• No extension or alteration to make building higher than 5m, if within 10m of the curtilage boundary. In all other cases any extension or alteration must not be higher than the building being extended or altered.

Applicable to all:

• Development must be within the curtilage of an existing industrial building or warehouse
• Gross floor space must not exceed:
• 110% of the original building or 500 square metres (whichever is lesser) on designated land
• 125% of the original building or 1,000 square metres (whichever is the lesser) on a site of special scientific interest
• 150% of the original building or 1,000 square metres (whichever is the lesser) in all other cases
• No development to come within 5m of the curtilage boundary
• No development within the curtilage of a listed building
• On designated land any new, extended or altered buildings to use materials similar in external appearance to those used for existing industrial building or warehouse
• Developments that would reduce space available for parking or turning vehicles are not permitted development
• Any new, extended or altered industrial building must relate to the current use of the original building, the provision of staff facilities or for research and development of products or processes
• Any new, extended or altered warehouse must relate to the current use of the original building or the provision of staff facilities
• No new, extended or altered building to provide staff facilities:
• Between 7pm and 6.30am, for employees other than those present at the premises of the undertaking for the purposes of their employment
• At all, if a notifiable quantity of hazardous substance is present

Where there is any doubt as to whether a development would be permitted development, advice from the local planning authority should be sought. To be certain that a proposed development is lawful and does not require an application for planning permission, it is possible to apply for a "Lawful Development Certificate" from the local authority

What category does my building fall under?

• Industrial Building – This is a building used for the carrying out of an industrial process and includes a building used for the carrying out of such a process on land used as a dock, harbour or quay for the purposes of an industrial undertaking and land used for research and development of products or processes, but does not include a building on land in or adjacent to and occupied together with a mine
• Warehouse – means a building used for any purpose within Class B8 (storage or distribution) of the Schedule to the Use Classes Order but does not include a building on land in or adjacent to and occupied together with a mine.

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