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  • Cliff L'Aimable _Chartered Surveyor & Building Engineer

Home Office in your garden

Updated: Jan 15

What size garden office is permitted without a planning permission?


Without obtaining planning permission, how high can a garden room be? A new garden room must be one storey, with an eaves height no higher than 2.5 metres, in order to avoid requesting planning permission. For a gable, you can build up to 4 metres, and for other roof designs, up to 3 metres.





Building Regulation Approvals


If you want to put up small detached buildings such as a garden shed or summerhouse in your garden, building regulations will not normally apply if the floor area of the building is less than 15 square metres and contains NO sleeping accommodation.


If the floor area of the building is between 15 square metres and 30 square metres, you will not normally be required to apply for building regulations approval providing that the building contains NO sleeping accommodation and is either at least one metre from any boundary or it is constructed substantially of non-combustible materials.


This section provides you with general information to help you comply with the Building Regulations when constructing a new outbuilding within the boundaries of an existing property, such as:


• garage or carport

• summerhouse or shed

• greenhouse


Building a new garage attached to an existing home would normally need building regulations approval.

Building a new attached carport (open on at least two sides) would not normally require building regulations approval if it is less than 30 square metres in floor area.


Building a detached garage of less than 30 square metres floor area would not normally need building regulations approval if:

• the floor area of the detached garage is less than 15 square metres.

• the floor area of the garage is between 15 square metres and 30 square metres, provided the garage is at least one metre from any boundary, or it is constructed substantially of non-combustible materials.


If you want to convert an integral or attached garage into habitable use, building regulations will normally apply, contact us directly for specific advice at support@bcsurv.com or tel 01992 710 763.


In many cases, these structures will be exempt from requiring approval under the Building Regulations if they meet certain exemption criteria, contact us for advice.


If the Regulations do apply to the building then it must be built to reasonable standards.

get a fee quote from www.bcsurv.com tel: 01992 710 763 Email: support@bcsurv.com



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