Part P is a legal requirement. It is law. It is part of the Building Regulations. It is law. It became law on 31/12/2004. It became law because it was brought into being as a Statutory Instrument, signed on 06/12/2004 by Phil Hope, Parliamentary Under Secretary of State Office of the Deputy Prime Minister, and laid before Parliament on 10/12/2004. And if you don't believe me, perhaps you'll believe the Government website that publishes legislation after you click here: http://www.opsi.gov.uk/si/si2004/20043210.htm and read what you find. (As an aside, there was an amending SI made in March of this year, but that changed the wording of Part P, not the legal status, and so is irrelevant to this particular discussion.) The thing that is guidance, and non-statutory, is not Part P, it is <u>Approved Document P</u>, and if you don't believe me, perhaps you'll believe the people who publish the Approved Documents after you click here: http://www.communities.gov.uk/index.asp?id=1501258 and read what you find.