Hard to say Bill without knowing all the fine details, but my first reaction was "installing 2 bathrooms" and "just repairs" are not the same thing. Replacing 2 bathrooms yes, installing no.
Anything that affects the external appearance could well be subject to permission*. Anything that increases the internal habitable area available will require at least a declaration; as will changing the number of bathrooms.
* In some area this could even include changing the colour of painted woodwork.
A European Rahinja.