Front wall Air Vent installation
Hi everyone.
I have a bit problem with dampness in my home. I thinking about cutting a hole in the front wall and installing a regular ventilation grille. I saw them in Leroy Merlin https://www.leroymerlin.es/productos/ferreteria-y-seguridad/perfiles-pletinas-chapas-y-rejillas/rejillas-de-ventilacion/rejilla-de-ventilacion-retorno-plata-mate-marco-de-montaje-600x200-mm-600x200-mm-86233070.html
I'm wondering if I'll need permission from Town Hall ( Licencia de obra menor) for minor building work or is not needed. I'm bit confused because is front wall of the house. If anyone can give me some advice I will really appreciate.
Many thanks