Site Manager

The German construction site manager, Bauleiter, is the central supervisory role on the construction site and carries a public-law function under the state building codes. The duty to appoint follows §§ 56 to 59 of the relevant Landesbauordnung (LBO), aligned with §§ 55 and 56 of the Musterbauordnung but varying by federal state. The Bauleiter ensures that the construction site complies with public-law requirements, that the works conform to the building permit and recognised technical rules, and that neither workers on site nor third parties are endangered.

The Bauleiter must be clearly distinguished from the Safety and Health Coordinator (SiGeKo) under the German Construction Site Ordinance (Baustellenverordnung, BaustellV). The SiGeKo is appointed by the building owner under § 3 BaustellV when workers from several employers are active on site and the project exceeds 30 working days with more than 20 workers simultaneously or 500 person-days in total. RAB 30 (Rules on Occupational Safety on Construction Sites) details the SiGeKo duties. The Bauleiter, by contrast, supervises proper construction execution towards the building authority, while the SiGeKo coordinates occupational safety across contractors.

In practice, the Bauleiter performs concrete tasks: checking execution documents against the building permit, attending critical construction phases, instructing contractors, maintaining the construction logbook, supervising acceptances and quantity surveys, ensuring traffic safety under § 32 StVO, and documenting defects. § 14 Para. 2 of the Occupational Safety Act (ArbSchG) further requires the Bauleiter to instruct workers on hazards where they have authority. VOB/B § 4 Para. 1 obliges the contractor to nominate a suitable Bauleiter who follows the client's instructions.

Appointment of the Bauleiter is mandatory under the Landesbauordnungen and must be in writing as soon as the project requires a building permit. The owner nominates the Bauleiter towards the building authority with the permit application or at the latest before construction starts, in some states (e.g. Bavaria Art. 56 BayBO, Baden-Wuerttemberg § 56 LBO BW) also retroactively on changeover. The appointment captures name, address, qualification record and explicit acceptance of duties under LBO §§ 56-59. Without a valid written appointment, the construction supervision liability falls back on the owner personally.

Qualification depends on the complexity of the building. Building classes 1 to 3 require at least a master craftsman or state-certified technician in construction. Building classes 4 and 5 and special buildings require an architect or civil engineer with submission rights registered with the relevant state chamber. Liability follows several tracks: civil under works contract (§§ 631 ff. BGB) and general safety duty (§ 823 BGB), administrative under the LBOs (fines up to 500,000 EUR), criminal under § 319 StGB construction endangerment with imprisonment up to five years, and § 222 StGB negligent homicide. Daily rates for external Bauleiter range from 700 to 1,400 EUR, hourly rates from 80 to 350 EUR depending on building category.