The property is not hmo Its a large house converted into 3 flats.
The escape routes are fitted with 3 x smokes, 2 call points and 2 sounders.
We would prefer not to extend the communal system into the flats due to problems with access and upheavel.
Its much easier just to have the parts of the mixed systwms replaced. As long as this complies?
Having the mxed system also appeals in case one is tampered.