Sustainable by design 2050

An initiative of the UIA

Velux model home 2020




Gründerzentrum Hamm

Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
Gründerzentrum Hamm
HHS Planer + Architekten AG Hegger Hegger Schleiff, Kassel
Structural design: Ingenieurbüro Dr. Meyer, Kassel, Building services design: Ingenieurbüro Prof. Dr. Hausladen, Kirchheim and Rempe + Polzer, Gießen, Soil expertise: Ingenieurbüro Jessberger + Partner, Bochum, Landscaping: Prof. Schmid Treiber Partner, Leonberg
Further Specialists
Analysing of building material: Prof. Steiger + Meier-Knobel, Zürich
Western Europe - Germany - Hamm
Climate Zone
Design status
Date of completion
Mixed use
Site area (m²)
Footprint (m²)
GFA (m²)
NFA (m²)
Gross Volume (GV) (m³)
Building Costs
4750000 EUR
Building Costs / m² GFA
Building Costs / m² NFA
Building Costs / m³ GV
Primary Energy (kWh/m²a)
Heating Energy (kWh/m²a)
Cooling / Heating-System

air heating/cooling via solarpanels which are integrated in the facade as well as below soil air duct

Use of renewable ressources - low tech
natural cross ventilation
Use of renewable ressources - high tech
solar heating, heating pump, geothermal energy use, energy recuperation
Key Sustainability aspects
solar building integration, vernacular building strategies, accessability for disabled, renewable building materials, recycling and reuse, ecological building materials, innovative bulding materials, integrated planning process, participation of users in planning process, low cost design, use of innovative design tools
Social and ethical responsibility

The new business centre offers affordable office spaces to rent for newly established small and medium-sized enterprises that have adopted the principles of sustainable development and focus on applying environmentally friendly practices. The building itself and the way in which it was constructed also sets a good example. It was built using bricks that once belonged to the coal mine nearby, which has now been demolished. This symbolises the region's transformation from a highly industrialised area that damaged the environment into one that applies the principles of sustanable development. And this is achieved without compromising on aestetic quality.

Ressource efficiency and environmental impact

Minimal CO2 emissions during construction of support structure. Office building is a solid construction with walls made from dense materials (thermal mass). Cavity wall insulation used for exterior walls - mainly cellulose insulaton made from recycled paper fibre with no harmful binding agents. Support structure for the hall is a steel frame construction; the infill consists of re-used bricks. Roof structure made from arched laminated beams. Cavities filled with cellulose insulation made from recycled paper fibre. Windows in office building and hall wing made from local wood.

Economic lifecycle perfomance

The building helps new engineering companies and businesses within the skilled trades sector with an ecological bent get off the ground. It was never intended to be a financial investment that would provide the highest potential return (rental yield). It was constructed at the lowest possible cost (see key figures).

Contextual performance and impact

In addition to making a contribution to reducing energy consumption during construction, reusing bricks from the coalmine nearby following its demolition also symbolises the region's transformation in a way that does not compromise on aesthetic quality and takes account of local traditions.