Converted house with 4 flats. Pre 1991
One flat is a basement flat, with a separate entrance.You then have a ground floor flat, first floor and second floor flat.All owner occupied.
The building has a small communal hallway, and two flights of stairs.
The guidance seems to be that a Type LD2 Grade A installation is required, for the communal area.
The basement flat is not connected to the communal area, and has its own entrance. Will that flat require a detector/sounder installed?
Thanks