Revitalisation of the Alsterhaus During Ongoing Operations

Alsterhaus Hamburg

Das der KaDeWe Group zugehörige Alsterhaus sollte im laufenden Betrieb revitalisiert und modernisiert werden, um hinsichtlich der Konzeption den Ansprüchen eines modernen Luxuswarenhauses gerecht zu werden. Hierfür wurden fünf Etagen des denkmalgeschützten Gebäudes etappenweise saniert und zwischen 2017 und 2020 zum jeweiligen Weihnachtsgeschäft eröffnet.

Trotz komplexer Herausforderungen, die das Bauen im Bestand bei laufendem Betrieb und beengten Baustelleneinrichtungsflächen in stark frequentierter Innenstadtlage mit sich bringt, konnten die einzelnen Bauabschnitte getaktet entlang einer ambitionierten und mit dem Verkaufsgeschäft eng verzahnten Terminschiene erfolgreich übergeben werden. Neben der Neugestaltung der Verkaufsflächen und Shopeinbauten, nach Vorgaben der Designer und Brands, wurden umfängliche Schadstoff- und Brandschutzsanierungen an der historischen Bausubstanz, sowie die Erneuerung einzelner technischer Anlagen und der Austausch von Deckenaufbauten zur Verringerung der Nutzlasten vorgenommen.

// Project Management // The KaDeWe Group // Refurbishment // LEAN // Listed Building // Retail

Aufgabenstellung

The works at the Alsterhaus on Hamburg's Jungfernstieg envisaged a phased revitalisation of the retail floors from 2016 onwards, with the aim of surpassing the level of other historic luxury department stores in terms of its concept as a modern department store. From December 2021, the works were additionally extended to include extensive fire protection, roof refurbishment and façade access measures.

Compliance with the construction schedule was of extraordinary importance. The plans envisaged completing the floor-by-floor works between 2017 and 2020 for the respective Christmas trading seasons.

Projektdetails

// BGF:

42.500 m²

// Projektlaufzeit:

2017 bis 2024

The KaDeWe Group GmbH

Hamburg

// Projektvolumen:

46 Mio. € Netto

Refurbishing a luxury department store of this scale during ongoing operations was a particular challenge. We are delighted that we were able to accomplish this successfully through close collaboration between all parties involved.

Alexandra Knoblauch

Project Manager

Entwicklung

The revitalisation of the Alsterhaus required the renovation of the retail floors to adapt them to the needs of an inner-city luxury department store. To achieve this, various stakeholders came together to successfully realise measures relating to design, efficiency and technical modernisation.

Projektplanung

The plans for the Alsterhaus included, among other things, a revised store design as well as a renewal of the building fabric in terms of fire protection, structural loads and technical systems. In order to realise these, the aspects of the listed building – such as potential changes of use – had to be taken into account during the planning phase.

Bauphase

After the conversion measures had already begun in 2016, KVL took over project management from January 2017, with the ground floor being revitalised first. The tight schedule made regular meetings and evaluations of the current status indispensable, resulting in LEAN takt planning for the renovation of the second upper floor – where quick-drying screed was also used to reduce construction time.

Übergabe

Despite the emerging COVID-19 pandemic during the conversion works, the measures were completed satisfactorily within the prescribed timescales.

In order to comply with listed building protection requirements during the course of the works and to document the preservation of listed elements, consulting services were obtained from a conservation office. The facility management of the user was also closely involved in the various approaches from the planning phase onwards, in order to ensure a sustainable service life and ease of maintenance of the building services.

Nachbereitung

Looking back, an overwhelmingly positive conclusion can be drawn – particularly taking into account the impact of the COVID-19 pandemic. The works made it especially clear that, particularly in the case of listed buildings, timely and enhanced investigation of the building fabric allows unwanted surprises to be identified early. Involving the executing trades even before design phase 1 can also help here.

Unser Learning

Comprehensive risk management with corresponding budgeting for unforeseen events is essential when building in existing stock.

The work on and in the Alsterhaus – during ongoing operations no less – once again demonstrated how important close-knit and above all partnership-based collaboration and communication with all project participants are in construction projects of this scale.

In particular during the construction phase, transparent communication and mutual understanding also allowed the client's needs to be met and the project to be brought to a successful conclusion.

Normann-Henner Plattner, KaDeWe GMBH

Bauzeit

Jahre

Volumen

Millionen €

Projektbeteiligte

Mitarbeitende

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Thomas Penske

Managing Partner

penske@kvlgroup.com +49 40 325285520