There were many rats in/at the neighbourhood of my house.

[Tan Elaine]

There were many rats in/at the neighbourhood of my block of flats.

Which preposition should I use?

Thanks.

 

[bhaisahab]

There were many rats in/at the neighbourhood of my block of flats.

Which preposition should I use?

Thanks.

"in"

 

[MikeNewYork]

There were many rats in/at the neighbourhood of my block of flats.

Which preposition should I use?

Thanks.

You would use "in". But "the neighborhood of my block of flats" sounds a bit strange. You might just say "in my neighborhood" or "in/around my block of flats.