General renovation small swimming pool of the municipality of Beuren. Property planning services building, § 34 HOAI iVM. Appendix 10, output phases 1-4.

Property planning services building, § 34 HOAI iVM. Appendix 10, performance phases 1-4 (stage 1). Client's option: level 2 (service phases 5-7) and level 3 (service phases 8-9). No entitlement by the contractor to re-order according to level 1.