REbuild: energy efficiency increases the value of buildings

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REbuilt 2023, the event

REbuild 2023: on 9 and 10 May, at the Congress Centre in Riva del Garda, Italy, the event that networks all the players in the construction industry returns. Registration is now open.

An important event, as also demonstrated by a study carried out for the REbuild Observatory on the built heritage, which speaks clearly: investing in the energy requalification of buildings is essential to keep the value of owned homes intact, even in medium-sized cities.

Energy efficiency increases the value of the building

If the home is the Italians’ safe, great care must be taken, because this safe has a weakness that can turn into a leak. The rising cost of energy combined with the continuing war makes it essential and urgent to act to reduce consumption. As the European Green Homes Directive shows us, the only possible answer to protect the housing stock is to invest in their efficiency.
real estate is to invest in their efficiency. With or without building bonuses.

Spending on energy retrofitting means guaranteeing your real estate an increase in value of up to 40 per cent (by moving from a class G to a class A). Conversely, not carrying out any retrofit means a dry loss of the same percentage in terms of market value.

The analysis emerges from research developed – for the REbuild 2023 Observatory – by the Department of Project Cultures of the Iuav University of Venice in view of the new edition of the event that will take place this year on 9 and 10 May at the Congress Centre in Riva del Garda (TN).


The analysis – carried out on three sample cities, namely Bergamo, Mestre and Padua – puts the data in black and white. Depending on whether a building is located in the city centre or in the suburbs, the variation in value between an E class and a D class is around 5-6%, but rises to between 14 and 18% if you go from a G to a D and even between 30 and 40% from a G to an A. Similarly, reasoning the other way round, those who do not make efficiency gains are destined to lose a substantial range of value.

The Italian housing scenario shows a building stock that for the most part dates back to before 1971: some 35 million building units. More than 55% of the properties belong to the most energy-intensive classes, which have a consumption up to 10 times higher than houses in the best performing energy class and entail an average expenditure (between a class G and a class A) that impacts on the family bill for about 4 thousand euro more per year (source: Assoimmobiliare). The more time passes, the less the market will be willing to spend to buy ‘bargain homes’ for the wallet. This is why making good use of technology and bonuses (conspicuous even without the 110%) means preserving from loss of value an asset that is still the gold reserve par excellence of families in our country.


The title of the 2023 edition ‘Integra. Rethink. Transform.” summarises the challenges facing the construction industry with the awareness that a positive outcome can only be achieved with the contribution of the entire supply chain. In the three verbs that tell the story of the ninth edition of Rebuild there is a call to the entire sector to make an effort to bring together all experiences.

16 conferences, 4 workshops and 60 internationally renowned speakers will give life to 2 days of meetings and testimonials on some key topics for the future of the built environment.

Among others, we mention:
● ESG criteria that are becoming the cornerstone of investment strategies also in real estate;
● the digitalisation and data culture that has invested the entire sector and not just design
● the energy transition, which does not only concern individual houses but cities or neighbourhoods as a whole;
● off-site as an answer to the need to control time and costs with international experiences applicable in Italy;
● houses that are increasingly full electric, digitally controlled and NZEB.

(full programme available at www.rebuilditalia.it)