A building, together with its associated facilities, must be designed and constructed taking into account its projected time of use in the manner prescribed in applicable provisions of law, including technical building regulations, and in accordance with building expertise and know-how, and so as to ensure that the building meets energy performance requirements and rational consumption of energy (Article 5.1.1.f of the Polish Building Code).
The technical building regulations concerning energy efficiency and thermal isolation are contained in Chapter 10 of the Ordinance by the Minister of Infrastructure dated 12 April 2002.
When a building, apartment or unit designed for separate use in a block is sold, an energy performance certificate must be given by the owner to the prospective buyer. An appropriate energy performance certificate must be made available to any prospective tenant. In both cases the document cannot be issued by the owner of the building, apartment or unit. Certificates for residential premises may be drawn on the basis of the certificate for the building with common heating system or on the assessment of another representative apartment in the same block (Article 5.4-5.5b of the Polish Building Code).