The apartment building, which is around 70 metres long and 13 metres wide, will contain 46 publicly subsidised flats with almost 3,600 m2 of living space. The mix of barrier-free 2- to 5-room flats, all with balconies or terraces and accessible via a lift system, covers a wide range of needs. There will be 19 car parking spaces as well as 33 bicycle parking spaces in the underground car park. A further 70 bicycle parking spaces, a playground as well as car and bike sharing will be offered in the outdoor area. The flat roof will be extensively greened and will be equipped with a photovoltaic tenant electricity system with an annual capacity of around 55,000 kWh.

High degree of prefabrication and Lean construction ensure a tight deadline

Despite some challenges, the team is more than on schedule. As the construction site only offers limited space for equipment and storage areas, the materials are being delivered just in time. The construction of the masonry from prefabricated sand-lime brick planning elements contributed significantly to more rationalised construction processes. The precise timing of the shell construction sections also played its part, allowing the building shell to be completely finished by the beginning of 2024.

As Hansaallee is located in a potential earthquake zone, 50% of the walls of the standard storeys are made of reinforced concrete for structural safety reasons. The façade is finished with light and greyish window plaster, while anthracite-coloured balcony parapets provide contrasting accents. "We carried out a process analysis for the finishing work using the lean construction method. All defined deadlines and milestones are transparent for the entire construction site team as well as the subcontractors at all times,’ says project manager Ansgar Merten. The roof and façade are scheduled for completion in June, while the outdoor facilities are to be completed in July so that the handover can take place on schedule in the autumn.