2026–2027 framework agreement for trenchless rehabilitation of building sewer connections using a liner system

Summary

The tender covers trenchless rehabilitation of sewer pipes connecting buildings to the network across the city of Bielefeld, using a liner system. It is a framework agreement for 2026–2027. The deadline for submitting offers is 20 October 2026 at 10:00. Price accounts for 100% of the evaluation. Offers must be submitted electronically in German. The contract is not divided into lots, and alternative offers are not permitted. Multiple main offers may be submitted, but each must independently qualify for award. The bidder must demonstrate the required professional suitability, including compliance with RAL-GZ 961 requirements (D; S27.1 and/or S27.2).