Timber decking guide - Planning & building regulations

Currently, the construction of timber decks is usually considered under the planning and building control procedures that apply to the construction of private patios, terraces, and pool surrounds.

As such, deck structures are often considered to be exempt from planning regulations. This is not always the case. There are a number of specific instances where consent is required prior to building a patio, terrace or deck and these are set out below:

Situations Requiring Planning Permission

• Where the deck is situated within 20 metres of a highway.
• Where the deck is at 1st floor level or above.
• If any part of the deck construction exceeds 3m in height.
• If the structure would affect the amenity value or privacy of neighbouring properties.
• If the deck is attached to a listed building or situated in a conservation area or National Park.

In addition to the situations set out above, other restrictions have been known to apply, including limitations to the overall deck area in relation to the existing property or garden area and the constraints of established building lines.

With the exception of ground level decks, property owners should always check that planning regulations do not apply to their proposed structure.

In addition to contacting the Local Authority, neighbours who may be affected by the structure should also be informed. Neighbour objections are the most usual reason for planning refusal or restrictions.

The TDA publishes a leaflet (Ref TB 02) about the statutory requirements (Planning and Building Regulations) applying to decks, which is free on request.