Sustainable development is almost mandatory

Forgotten the old slogans of "The gaspis hunt" or "there is no oil, but it has ideas!" The twenty-first century less bragging, but decided to take its destiny into to reduce energy consumption and the effects resulting therefrom. Already the Rio Summit (1992) and the Kyoto Protocol (1998) had sounded the alarm. Initiated in 2007, the Grenelle of the environment drives the nail and takes commitments up to 2020 with the 2012 key stage, where "all new buildings must meet low energy consumption standards. Of course, real estate companies are concerned primarily with this new antiphon of defined sustainable development, as a reminder, as "development" that meets the needs of the present without compromising the ability of future generations to meet their.

More a contest which requires an environmental component. A society that is concerned about its carbon footprint. More a company seeking to become "sustainable" or "sostenabilita", as so well summarizes the terminology English and Italian.

Created at the end of the 1990s, the stream of the HQE (high environmental quality) certification, which is based on 14 green targets with some very difficult to reach, quickly became a broad river where plunged proudly number of stakeholders in the building at all levels, half by belief, half for the financial windfall resulting, especially for specialized studies offices. Pascal Gontier, architect and long time consultant in the field note: "I am worried for the offices." We are really going to have to deal with electrical issues to get out of sick buildings syndrome.

François Leclerq, another architect who has just completed a big black offices at the place called the cow operation on the national 20, near Paris, is an evolution: "Everything which was previously suspected to be a constraint becomes a selling point." Yesterday, the transparency was considered a virtue. Today, it speaks only of occultation and stores. But, in my view, sustainable development beyond the only building. Implantation is paramount, and to be a little provocative, I would find that the Montparnasse tower is very successful, with stores in his basement and its immediate service by Metro. Of course, it is not beautiful but well located! The density should not become the guilt of our past.

For Elisabeth Naud and Luc lice, currently in charge of a building on the Trapeze in Boulogne-Billancourt on behalf of Hines, proponent, Gecina, investor, the team implements vegetated roofs, planted walls, the automated blinds and efficient ventilation systems... "Will it air conditioning or not." wondered what Luc Naud, Paris, can very well without them with a surventilation and an opening night. "The architect argues"for building easy to maintain, where it can clean the glass offices and enable the maintenance and sustainability of the building according to rules of good sense."

Denis Valode, Associate Director of the Agency Valode & Pistre architects, among others, which won the Generali defence tower, think not: "it is a subject which has plenty of entries: do with materials which use less energy and consume less material;" Refresh to ventilate thinking good directions and passive methods so you can be sure that outdoor air is less polluted indoors; use solar, photovoltaic or thermal panels. If you want to make buildings low consumption (BBC), or even to energy zero or positive energy, buildings must be do without air conditioning. In addition to the traditional studies offices, we have specialised in the environmental engineering offices need and who can make calculations: it is a new job!

The opinion of the Office of studies

Jean-Marc Weill, Director of the Office of studies C & E (Construction & environment) feels comfortable with the new regulations. "They force us to transversality makes us speak with more body trades." This requires us also to thermal ethics and praise of the mixed nature of the materials. I think that this is a turning point which notably allows us to become a force for proposals. We have no obligation of result, but a duty of research.

Eric Hutter, President of Inex (fluid studies Office) advocates for its part to be the most possible upstream on the project. The design is essential to reduce consumption. The solar or photovoltaic technology do to win the last kilowatteurs per square metre and per year. "Apart from these".

technical considerations, we feel a true social consensus, a movement of substance, insists. Must be set extremely drastic goals, as far as possible, as quickly as possible. Sometimes, the client asks even more... ""We work at the scale of buildings but also on neighbourhoods." There is a global effect is from the urban point of view. The facility, it is that everyone wants to sustainable development. The main difficulty is the economic component. We try to assess the additional very upstream, including when one adds a solar power station.

For its part, Christian Lombard, Director of the space-time which is twenty-three years is broken on the subject: "I came to the heat by solar power, he says". "We are working both on the envelope of the built environment, insulation, orientation, shape and quality of glass," he said. Evolution is very fast. "We work currently on a Francis Soler fully glazed building which will consume 23 less than ordinary building, including with ventilo-convectors manufactured in Belgium, quasi-prototypes." The extra cost of these intellectual and physical progress is generally estimated at 15. Additional costs which frightens not promoters.

Chairman of BNP Paribas real estate Promotion real estate business, Louis-Baudouin Decaix is a positive look at future developments. "We were the first to offer buildings HQE, claiming it, we are now on buildings HPE (high energy performance), or even to HPE (high energy performance).". "Before an inevitable movement, we have taken the advance and without large effects of announcement, already started the carbon footprint of our buildings to realize the true reality." BNP Paribas real estate believes in a certain density and between 150,000 and 200,000 m2 of offices HQE per year. "Beyond the technology, we envision a different configuration of our buildings, said the sponsor, we have a real watch hosted by Raymond Sauvegrain cell. Sustainable development is almost mandatory. We are part of the HQE association and have a contract with Certivea.

Eric Mazoyer, Director General of Bouygues real estate business, shops and offices, also seeks to define "good rules" for sustainable development. It retains three axes: "Impose the architect a bioclimatic design;" equip the building of sensors connected to a GTC (centralised technical management) to drive the building according to the good logic (now: lighting; missing: closed; external blinds calculated the temperature) and, finally, ensure that allow human exploitation in time with good reflexes, to the image of a manager of energy control. We will achieve a business centre of 23,000 m2 Vélizy with vegetable oil boiler, turbines, etc., called Green Office.

Construction at brush

Yves Dieulesaint, Director of strategic resources, and Olivier Hague, Director of construction and the building in Gecina, the environment is essential with a Committee of quality and sustainable development operational since 2002. "We are redefining our policy on sustainable development." "It's all framing that we want to make to improve performance on five lines of business that will fall on each nature of assets", exposes Yves Dieulesaint. "This revolution will we touch very soon." It is better to be in the environment that has lagged behind. We are in a constant search, which allows us to careful testing.

Director of Aviva Investor Real Estate France, Joëlle Chauvin defends the emblematic project of Carpe Diem, new Tower Defense with great conviction. "The building permit is obtained, the project is tender. "You have to pass the torch to the user who will be the custodian with its lessor," she says. "It is a culture of sharing which requires consistency between the State, the investor, operator and the contracting authority." There is a cost of comfort. The next three years will be for us very informative. There are many certifications abroad and I hope that Carpe Diem can get the American Leed Gold.

Director Council of studies on sustainable development for Jones Lang LaSalle, Franz Jenowein betting on the certifications, the American Leed or better yet the Breeam English. "Today, 250 buildings are certified in France in tertiary, tomorrow, we hope 600. "The perception is that the extra cost is huge, but if it works very early in a housing project, we reach 5 to 8 with a multitude of stakeholders, which is very complicated."

Thus, everyone has his opinion on sustainable development, which is still a great site to clear.