We bought our new house nearly 12 months ago. We’ve found extensive mould behind wall units and along the skirting boards, but the site manager assures us the house is merely “drying out”. He’s now said that if we aren’t satisfied we should take the matter up with the NHBC.
The National House-Building Council scheme guarantees that the builder must return and put right any defects arising from a failure to comply with the NHBC’s minimum standards for up to two years after completion. The warranty makes provision for a free conciliation scheme from the NHBC if the builder fails to carry out the repairs. I’ve a suspicion the site manager may be right however: your house may not have had chance to dry out properly if it’s double-glazed and you keep your windows shut all the time.