Renovation of 180 Apartments

The project involved the comprehensive renovation and refurbishment of two apartment buildings at Überlandstrasse 375/377 and 391/393 in Zürich. Originally built in the 1960s, these buildings house a total of 180 apartments and were in significant need of updates. The goal was to address the outdated structures and adapt the housing mix to meet local demographic developments, thereby reducing vacancy rates and increasing the appeal of the units.

Cost-Effective Refurbishment Model

The refurbishment adhered to an economically viable model, ensuring that the renovations could be carried out without exceeding market-standard rent prices. Detailed planning for kitchen and bathroom refurbishments, along with specific offers, allowed for clear visualization and accurate costing. The project included an attractive base renovation package with various optional modules, tailored to meet the owner's requirements.

Comprehensive Real Estate Services

Key services provided in the project included real estate consulting, location and market analysis, and demographic trend assessments. The project also optimized apartment mix and rents, and implemented a refurbishment concept that allowed for renovations to be carried out while tenants were still occupying the buildings. Execution as the total contractor, Implenia managed total interior and exterior refurbishments, seismic retrofitting, and remediation of pollutants like mold.

Efficient and Sustainable Execution

The project faced challenges such as a short construction period requiring efficient lean management, complex site logistics, and navigating tenancy law and regulations. Despite these challenges, the project adhered to sustainability standards, ensuring pollutant-free facilities and compliance with operational and building physics requirements.

Project Timeline and Cost

Construction started in September 2017 and completed by June 2019. The total cost for the refurbishment was approximately 20 million CHF. The primary stakeholders included SISKA Heuberger Holding AG as the building owner, Gutknecht + Jäger GmbH as the architect, and several specialized consultants for HVAC, energy, and structural engineering.