My neighbour who resides in between myself and another neighbour (there are 3 houses together) had an extension built last year. For 12 weeks now we have all had rats in loft, cavity wall and under kitchen units and this has been absolutely dreadful to live with. The Council have surveyed our drains and the problem has been located next door in the old drains before the extension was built. Our neighbour has been reluctant to help with the situation despite pleading from both neighbours. In desperation I have been in touch with the building inspector who visited whilst the extension was being built as I thought that they would of checked the drains as the extension was being built.
I would be grateful if anyone could inform me whether the builder who built the extension would be held accountable for not properly dealing with the drains. Surely a rat infestation would not be overlooked when a builder has not done his job properly.
Thank you for any advice.