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3) Up to 6 months after construction is completed, at the latest, an EPB final declaration – a so-called "as-build declaration"- presents the energy performance calculation for the building. This declaration also needs to be co-signed both by the EPB responsible and the applicant.

Certification is mandatory for new buildings, as well as for existing buildings when being sold or rented. The certificate is valid for 10 years.

The execution orders on calculation methods, requirements, agreements and penalties were approved by the Government on the 17th April 2008.

The execution order on the procedure was approved by the Government on the 26th of June 2008.

2 > Status of the implementation

Calculation procedures

The calculation procedures (art. 3) are included in an execution order. The Walloon Region uses the same calculation method as the Flemish Region. The 3 Regions work in close collaboration towards the adaptations of the calculation method, which will be regularly updated.

Requirements for new buildings

Minimum requirements for new buildings have been included in an execution order. Two phases are foreseen for these to enter into force. The start of the first phase is September 2008 and of the second September 2009.

The first phase aims to strengthen the requirements of the current regulation in terms of Umax values, level K, but also ventilation for offices and schools. This new execution order also includes requirements for buildings with other specific usages including industry (cf. table1). A first software tool is available for the calculation of U values, level K and ventilation. For the moment, the proof of compliance is verified at the time of town planning permission.

The second phase aims to add new requirements depending on the function and type of the building. Those may be requirements on overheating, maximum primary energy consumption per square meter and/or maximum EW value (cf. table2).

For new residential buildings, a third phase is planned for September 2011: the requirements on maximum primary energy demand will be strengthened from 170 kWh/m2 to 130 kWh/m2. The type and level of the requirements for new buildings are governed by the function and type of the building (residential/schools and offices/industry/other non-residential buildings) and may cover:

› maximum primary energy demand per square meter; › maximum Ew value which express the primary energy consumption of the project compared to primary energy demand of a reference building;

Software tool 'build with energy'

› maximum K value which depends on the average U-value and the compactness of the project;

› maximum U-values for each element of the building shell; › respect of requirements concerning ventilation; › maximum value for overheating rating.

EPBD Buildings Platform > P137_EN_Belgium (Walloon)_December2008 3

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