The parties to a work contract are:
Architect (Planner)
- Definitions
- Architect (planner) = A party, which is primarily obligated in the areas of structures for aesthetic-design work, such as project planning and planning, but also awarding preparation and construction management (a member of the so-called liberal professions)
- Full architect = An architect, who is obligated to carry out all architecture services under a “total contract” that are necessary for the execution of a structure
 
- Natural person
- Joint associations of architects
- Simple group or society
- Collective partnership
- Limited partnership
 
- Planner group or society
- Simple group or society
- as long as another organisation form was not formally selected
 
 
- Simple group or society
- Legal entity
- Stockholding company
- Company with limited liability
- Cooperative
 
Principal
- Definition
- Principal = the party which orders the work
 
- Majority of persons or entities as customer 
- So-called construction consortium
 
- Natural person
- Joint asscociations
- Simple group or society
- Collective partnership
- Limited partnership
 
- Legal entity
- Stockholding company
- Company with limited liability
- Cooperative
 
