The two-month period in Section 9 of the Austrian Tenancy Act (Mietrechtsgesetz, MRG) may apply when a tenant gives notice of a private wallbox or other EV charging point. First establish who intends to make the alteration, whether the parking space forms part of the same tenancy and which MRG provisions govern the property.
If Section 9 applies, the landlord must assess the proposed substantial alteration against the statutory conditions and the building's electrical and structural circumstances. A charging point is not automatically a privileged alteration simply because it serves an electric vehicle. Electricity tariffs, grants and charging-cost allocation address separate questions.