Testing Laboratories, Inspection Bodies and Certification Bodies under the Building Codes of the German Federal States (Landesbauordnungen)

Depending on the provisions of the relevant federal state, the testing laboratories, inspection bodies and certification bodies are either recognised by the federal state itself or by DIBt.
In both cases, DIBt prepares the recognition in accordance with the recognition ordinance of the federal state concerned. If mandated to do so, it also recognises the bodies. As part of the recognition procedure, DIBt verifies not only whether the body meets the general requirements (such as impartiality) but also whether the applicant has the necessary technical competence and equipment as well as sufficiently qualified and experienced staff.
Furthermore, DIBt is responsible for publishing and keeping up-to-date a list of recognised testing laboratories, inspection bodies and certification bodies.

List of necessary documents for the recognition procedure under the Building Codes of the German federal states (German)

List of Testing Laboratories, Inspection Bodies and Certification Bodies in Accordance with the Building Codes of the German Federal States (Landesbauordungen) (Version: May 2017, German)

Obligations and Instructions for Testing Laboratories, Inspection Bodies and Certification Bodies in Accordance with the Building Codes of the German Federal States (Landesbauordnungen) (German)

Preliminary Remarks (Version: January 2013, German)
Obligations (Version: January 2013, German)
Instructions (Version: January 2013, German)

Guidelines and Instructions for Bodies Granting National Technical Test Certificates (allgemeine bauaufsichtliche PrŁfzeugnisse)

Preliminary note (Version: February 2015, German)

Guidelines (Version: February 2015, German)

Instructions (Version: February 2015, German)

General Information

Information for recognised testing laboratories, inspection and certification bodies concerning Construction Products List A Ė Version 2016/1 and the implementation of the new Model Building Code
14 December 2016 (German)

Letter from the Expert Committee on Construction Engineering (Fachkommission Bautechnik) to All Bodies Granting National Technical Test Certificates (abPs) with Regard to Fire Resistance of Building Components dated 10 June 2014 (Information for abP holders/applicants) (German)

Letter from the Expert Committee on Construction Engineering (Fachkommission Bautechnik) to All Bodies Granting National Technical Test Certificates (abPs) with Regard to Fire Resistance of Building Components dated 11 March 2014 (German)

Instructions from the Expert Committee on Construction Engineering (Fachkommission Bautechnik): Opinions Supplementing National Technical Test Certificates (abPs) dated 7 October 2013 (German)

2nd Circular on the Extrapolation of Test Results for National Technical Test Certificates (abPs) dated 24 June 2010 (German)

1st Circular on the Extrapolation of Test Results for National Technical Test Certificates (abPs) dated 24 February 2009 (German)

Comment on the "1st Circular on the Extrapolation of Test Results for National Technical Test Certificates (abPs)" dated 28 May 2009 (abP Cover Page) (German)