Question juridique clé
Whether authorization for the electric heating installation had to be granted despite the availability of gas heating.
Solution extraite
Yes. Because the investment required for gas heating would be disproportionate compared with three electric radiators, the authorization for the electric installation had to be issued.
Motifs extraits
The cost difference made the gas alternative excessive in relation to the contemplated electric solution, so the permit could not be refused on proportionality grounds.