Could anybody give me some advice please. A developer started work last week refurbishing the house next door, which is great as it has been empty for a while. However, I came home today to find supporting props holding their rear wall up and a new steel put in place (probably for bifolding doors) but they have knocked out a few of our bricks to make space to fit the steel which is about 6inches in to our property and a few bricks have cracked underneath. We have had no prior discussion, consultation or any party wall agreement or notice. This was a surprise to us today. There is also some damage to the plaster work on the inside. We've arranged to meet the builder this weekend to discuss the issue but would welcome any knowledge and advice as we are new to this. CAN ANYBODY HELP PLEASE?!!