Tenants with one spare bedroom have had a payment reduction of 14% and those deemed to have two or more spare a reduction of 25%.
Lawyers for the 10 cases say that, unless the families move from their homes into smaller properties, they face building up rent arrears and being forced out any way.
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Technical experts are at the scene of the grim discovery in Bray, Co Wicklow.
Mother of Connor Sparrowhawk, who died under the care of an NHS Trust, called "vindictive cow" in voicemail allegedly sent by trust worker.
Another beautiful day for many of us with blue skies.