Do I need to give party wall notice for a garage conversion if my neighbour has verbally agreed to it?

When you are reliant on the goodwill of neighbours, you are taking a risk by prefering a verbal agreement over a party wall notice. When things go wrong and a neighbours home is damaged, verbal agreements are prone to disappear. If you intend to complete Works within 3 meters of a boundary, you will need to comply with the Party Wall Act. Its worth speaking to a Party Wall surveyor to ensure the necessary precautions are put in place.