Are house elves invisible at times?

[diliapacheco]

No: HPFGUIDX 136220

Sandra:
> does it say anywhere in the books if House Elves 
> ever invisible?  They can apparate all over the place as shown by 
> Dobbie when he appears at the Dursley's place, and in the 
> hospital as well, in one of the previous stories. So do their 
> magical powers extend further, because I reckon Draco would 
> have spotted an ex-Malfoy House Elf acting suspiciously.
> Just a thought!


Yes, they are invisible. See Chamber of Secrets, PoA, and GoF.
And even though, most of us don't suspect Malfoy spotting the house 
elves, if it where true, where are you going with this? What do you 
have in mind?

Dilia