Porth Cynllunio

 
  1. Building Regulations (cy)
  2. Approved documents
  3. Approved Document L (Conservation of fuel and power)
  4. Building Services Compliance Guides

Building Services Compliance Guides

Dim ar gael Cyfieithu Cymraeg

Dim ond yn Saesneg y mae’r adran hon o’r wefan ar gael ar hyn o bryd. Hoffem ymddiheuro am unrhyw drafferth y mae hynny’n ei beri.

Part L 2006 Building Services Compliance Guides

Part L 2010 Building Services Compliance Guides

Archived Publications

The publications below are now out of date and therefore should no longer be referred to.