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nZEB Day is here!

The Nearly Zero Energy Buildings standard (Part L 2019, Building Regulations) comes into effect on 1st November 2019 (with transitional arrangements).

The definition for nZEB in the Energy Performance in Buildings Directive (EPBD) is "a very high energy performance, as determined in accordance with Annex 1, The nearly zero or very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site or nearby".

For all new residential buildings, an equivalent to a 60% improvement in energy performance on the 2008 Building Regulations is required. This means an improved energy performance for the fabric, services and lighting specification. It also introduces a mandatory requirement for renewable sources. The renewable sources must in general provide 20% of the primary energy use, however there is flexibility where the building is more energy efficient than the regulations. This typically corresponds to an A3 Building Energy Rating.

These new building standards will result in higher quality buildings but also a rise in building costs.

If you'd like to discuss nZEB or any other planning or building issues please ring 086-854 6914 or email

Emmett is currently studying a postgraduate Certificate in Building Performance (Energy Efficiency in Design) in Dublin School of Architecture, TU, Bolton Street, Dublin.

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