There are two aspects to this in my opinion.
Firstly there is no reason why an FRA couldn't or shouldn't consider the requirements of both the RRO and Housing Act, because as you risk assessor types keep telling me a good assessor and assessment considers not the minimum to comply with legislation (the RRO) but will consider anything that can make the people and property safer.
Stay with me - in terms of fire precautions in HMOs if you satisfy the RRO you should by default satisfy the housing act - this is the reason Lacors was produced. The only difference being that housing officers can enforce the provision of standalone smoke detectors in each bedroom. Any good assessor would ask for that anyway in a HMO without a fire alarm system already fitted, UNLESS, of course you have a situation which William talks about here - you have an existing system which, as he says, should be perfectly suitable. Thats where your EHOs (Housing Officers) need to exercise common sense, and Im afraid many of them have little experience of BS5839 Part 1 systems and how they compare with BS5839 Part 6.
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