TAN 11

TAN 11 is the current Welsh government guidance on general noise and planning policy. It was produced by the then Department of the Environment (Now DEFRA) in October 1997 and replaced Welsh Office circular 16/73. The document talks about general principles in relation to noise and planning, and provides general guidance on both noise sensitive and noise generative developments, including draft planning conditions dealing with noise. The main detailed guidance provided in TAN 11 is the Noise Exposure Categories for new residential developments.

TAN 11 uses four Noise Exposure Categories (A-D) for assessing the suitability of sites for new residential development. Category A being areas where noise need not be considered as a determining factor in granting permission, and Category D being where planning permission should normally be refused. A table of noise levels is provided for day and night time to assess which category the site falls in to. Different noise criteria are provided for road, rail, aircraft and mixed source noise, with the criteria having been derived from various social surveys for different noise sources.

Some detailed guidance is provided on the assessment of noise from a variety of sources, but this guidance generally refers to other documents for methods of assessment and criteria.

TAN 11 makes reference to BS 8233, CRTN, BS 4142, BS 5228.

Contact Your Nearest Regional Office


If you would like to discuss our services get in touch with one of our regional offices directly, which are listed below, or email us at 
This e-mail address is being protected from spambots. You need JavaScript enabled to view it. .

Manchester 

Hepworth Acoustics Ltd (Head Office)
21 Little Peter Street
Manchester
M15 4PS

 

Tel: 0161 242 7900
Fax: 0161 235 8407

Contact Manchester

Birmingham

Hepworth Acoustics Ltd
1310 Solihull Parkway
Birmingham Business Park
Birmingham
B37 7YB

Tel: 0121 635 5565
Fax: 0161 235 8407

London

Hepworth Acoustics Ltd
Hamilton House
Mabledon Place
London
WC1H 9BB
 

Tel: 0207 554 8712
Fax: 0161 235 8407

Liverpool

Hepworth Acoustics Ltd
Bulloch House
10, Rumford Place
Liverpool
L3 9DG
 

Tel: 0151 515 0741
Fax: 0161 235 8407

Contact Liverpool

Sheffield

Hepworth Acoustics Ltd
The Innovation Centre
217 Portobello
Sheffield
S1 4DP
 

Tel: 0114 224 2428
Fax: 0161 235 8407

Bristol

Hepworth Acoustics Ltd
1st Floor, Aztec Centre
Aztec West
Almondsbury
Bristol
BS32 4TD

Tel: 01454 203533
Fax: 0161 235 8407