Climate adaption & Environmental sustainability


The effects of climate change have not only been researched for a long time, they are also becoming increasingly noticeable for all of us, with the number of heat days (and thus also heat deaths) in summer increasing. Densely built-up urban areas in particular cool down noticeably less at night, and slowly but surely the animal and plant world is also changing.

What to do? On the one hand, we need climate protection that combats the causes of climate change, with environmentally friendly construction methods, circular economy, renewable energy systems and much more. On the other hand, even in achieving climate neutrality, we cannot avoid climate adaptation measures that respond to the inevitable changes: shading, cooling, greening.

Climate change is also a challenge for social housing in the city. This is because there are not only ecological, but also socio-spatial effects. Some neighborhoods and groups of residents are more affected than others. In short, the urban climate is also about issues of equity. It is about making buildings and neighborhoods climate-friendly and providing cool green and open spaces for as many people as possible.

The IBA_Vienna projects have developed constructive contributions to climate protection at all scales, from building greening to sponge cities, from innovative timber construction to circular economy. This is because without answers to the climate question, even the best housing model would not be sustainable.


Examples in the IBA ...

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50 Green Houses

Within the framework of "50 Green Houses", an integrated combination solution for roadside retrofitting of existing buildings with greenery is being developed for the first time.

Biotope City

Climate adaptation measures in subsidized housing play an increasingly important role, but the principle of affordability must not be neglected. The Biotope City Wienerberg shows that dense development and effective greening are compatible.


The project deals with the topic of circular economy in the housing sector.


This project is an independent Innovation Lab that is specifically dedicated to the topic of redevelopment of urban stock with greening buildings.


LiLa4Green stands for "Living Lab for Green,” i.e., a living laboratory: innovative social science ­methods are combined ­with digital techniques in the development of Nature-Based Solutions with the greatest possible social impact and acceptance.


MGG²² is more than a normal housing project. For the first time, thermal component activation (TCA) is used for heating and cooling in social housing. This ensures a year-round supply of 100% renewable energy!

Quartier "An der Schanze"

The "An der Schanze" property developers' competition tendered started in February 2019. In a two-stage, dialog-oriented procedure, the foundations were laid for a new, lively neighborhood with high living quality and an urban character.


The vivihouse is an innovative construction system for erecting multi-story buildings for mixed use. It is based on a modular timber frame construction, which is specially optimized for the use of ecological materials.


As a result of a developers’ competition of the 2018-2020 housing offensive, subsidized rental apartments in a timber construction will be built on a plot of land in Stadlau.

... and beyond

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More Innovations & Projects

Many concrete innovations and projects go beyond the period of the IBA_Vienna and represent important impulses for the further development of the mentioned thematic field.

Click on the arrow above the image to learn more!


Straw, sheep’s wool, flax or cellulose are not only ecological insulating materials, but they also create a significantly improved living climate.

1st Vienna Housing TREE Program

The aim of the 1st Vienna Housing TREE Program is to gather experience in reducing CO2 emissions in the building sector.


GREENPASS® provides architects, developers and authorities with a digital tool for climate-optimized planning.

Shading measures

Since 2019, the City of Vienna has been awarding subsidies for the installation of sun protection devices in multi-story residential buildings.

Circular Economy

Since 2022, the City of Vienna has had its own staff unit for Resource Conservation and Sustainability in the Construction Industry.