What to do if problem neighbours were not disclosed to you?

It will depend on if the problem was known about and if it can be proven that the seller knew but did not disclose the dispute. If the problem is something that the seller had previously complained to the council about or delivered a written complain to the neighbour, then it could be argued that the seller did not disclose a neighbour dispute and you could sue the seller for misrepresentation.

How do I find out about a neighbour's dispute when buying a house?

When purchasing a property, check The Property Information Form (TA6) for any disclosed information about disputes between the seller and the neighbours. This can include any written correspondence with a neighbour, boundary disputes, or complaints to council or authorities about a neighbour.

What happens if you don't declare neighbour disputes when selling?

It is your legal obligation as a seller to disclose any disputes with neighbours. If you do not disclose them, the buyer could make a claim against you for misrepresenting the property.