Technical construction documentation on construction sites

Obligations and legal requirements

Technical construction documentation on construction sites is a central component of construction execution and supervision. It serves for quality assurance, verification, legal protection, as well as the subsequent use and maintenance of a building. Its maintenance is based on various legal, normative, and contractual requirements.

1. Concept and meaning of technical documentation

Technical documentation on construction sites refers to the systematic recording of all technical, organizational and quality-relevant information during the planning and execution of a construction project.

It fulfills several functions:

• Proof of contractual performance

• Quality assurance

• Securing evidence in disputes

• Basis for acceptance and warranty

• Documentation for operation and maintenance

• Fulfillment of legal documentation requirements

Complete documentation is now an indispensable part of professional construction management.

2. Legal and normative foundations for building documentation

There is no single "overall regulation" for construction site documentation. The obligation arises from several sets of regulations.

2.1 German Civil Code (BGB)

Under the German Civil Code (BGB) provisions on contracts for work and services, documentation obligations arise indirectly through:

• § 631 BGB – Contract for work and services (failure-free production)

• § 633 BGB – Material and legal defects

• § 650k BGB – Construction contract (consumer protection)

Businesses must be able to prove that their services were provided in accordance with the contract and without defects. The technical documentation serves as evidence in this regard.

2.2 VOB/B (German Construction Contract Procedures)

Construction contracts governed by VOB/B (German Construction Contract Procedures, Part B) are subject to extensive documentation requirements.

Important regulations:

§ 4 VOB/B – Execution

• Execution according to recognized engineering standards

• Coordination and notification obligations

• Documentation requirements for people with disabilities

§ 6 VOB/B – Disabilities

• Disability reports must be documented.

• Construction delays must be proven.

§ 14 VOB/B – Acceptance

• Prerequisite: complete and verifiable documentation

Without sufficient documentation:

• Amendments fail

• Extensions of deadlines will be rejected

• Disputes arising from defects occur

  
  

2.3 State building regulations (LBO)

State building codes require the documentation of certain evidence, e.g.:

• Stability certificates

• Fire protection certificates

• Test protocols

• Construction supervision records

Example NRW (BauO NRW):

• Proof of proper construction

• The site manager must ensure supervision.

• Relevant documents must be available.

  
  

2.4 HOAI (Fee schedule for architects and engineers)

In performance phase 8 – site supervision, documentation obligations are clearly defined:

The construction supervisor must:

• Keep a construction diary

• Document defects

• Check measurements

• Check invoices

• Prepare acceptances

• Compile technical documents

This documentation is part of the contractual architect's services..

2.5 Occupational Health and Safety Law and Construction Site Ordinance

Construction Site Ordinance (BaustellV)

Requires documentation from:

• Safety and health protection plan (SiGe-Plan)

• Instructions

• Risk assessments

• Coordination of several trades

Occupational Safety and Health Act

Obligation to document:

• Security measures

• Instructions

• Device testing

  
  

2.6 DIN standards and technical rules

Important standards require evidence and documentation:

• DIN 18299 ff. (ATV – General technical contractual conditions)

• DIN 276 (costs)

• DIN 1045 (Concrete protocols – test protocols)

• DIN EN Norms (TGA) technical building equipment

• VDI-Guidelines

These demands include, among others::

• Test protocols

• Material evidence

• Acceptance protocols

• Maintenance documents

  
  

3. Contents of the technical construction site documentation

Complete documentation covers several areas.

3.1 Construction process documentation

• Construction diary

• Construction schedule

• Progress reports

• Disability notices

• Weather documentation

  
  

3.2 Quality certificates

• Test reports (concrete, screed, etc.)

• Material evidence

• Approvals

• Manufacturer's certificates

• Welding certificates

• Leakage tests

  
  

3.3 Documentation of defects and deviations

• Defect reports

• Photo documentation

• Deadlines

• Proof of rectification

  
  

3.4 Planning and contract documents

• Execution plans

• Revision plans

• Addendums

• Releases

• Test statics

  
  

3.5 Acceptance and handover documentation

• Partial acceptances

• Final acceptance

• Audit documents

• Maintenance instructions

• As-built plans

  
  

4. Who is required to document the documentation?

The responsibilities have been distributed.

Construction manager / Site supervisor

Mainly responsible for:

• Construction supervision

• Construction diary

• Quality control

• coordination

• Acceptance documentation

Contractor/Construction Company

Obligation to document:

• Personal contributions

• Material evidence

• test protocols

• Disability notices

• measurements

  
  

Specialist planners (building services engineering, structural engineering, etc.)

Documents:

• Exams

• Measurement protocols

• Commissioning

• Audit documents

  
  

SiGe - Coordinator

Documented:

• Security measures

• Instructions

• Hazards

  
  

5. Legal significance of the documentation

Technical documentation has significant legal relevance.

It serves as evidence in cases of:

Construction defects, Construction delays, Change orders, Liability issues, Insurance claims,

Legal proceedings

Principle in construction law:

„In case of a dispute, what is not documented is often considered not to have happened.“

6. Consequences of missing documentation

Inadequate documentation can lead to:

• Liability risks for construction managers

• Loss of compensation claims

• Problems with acceptance

• Warranty disputes

• Evidence problems in court

• Vviolations of occupational safety law
  

7. Digitization of construction site documentation

Increasingly standard today:

• digital construction diaries

• Photo documentation via app

• Cloud project platforms

• BIM documentation

• Defect management software

Advantages:

• Legally compliant timestamps

• transparency

• central data storage

• available at any time

Technical documentation on construction sites is not merely a formality, but a central legal and organizational obligation in the construction industry.

It arises from:

German Civil Code (BGB) and German Construction Contract Procedures (VOB/B),

State building codes, German Fee Structure for Architects and Engineers (HOAI),

Occupational health and safety law, DIN standards, Construction contracts

Responsible parties are:

Site managers and site supervisors, Contracting companies, Specialist planners, Health and safety coordinator

Complete and systematic documentation is a prerequisite for:

Quality assurance, Legal protection, Successful construction project completion, Defect-free acceptance and use of the building.