Permission to attach to a neighbours wall

If it is not a party wall separating your side from there side then they can’t attach to your wall without permission. If there wall collapsing caused yours to collapse. Your neighbours should fit the bill for yours to be rebuilt.

There are many intangibles/factors involved The sheer fact that the neighbours in question did not establish communication relating to attaching their wall to your new independent wall is not a legal matter but a civil matter. My professional opinion would be that both walls are new and are now essentially one wall, if anything it is an added bonus to both parties, both walls are now reinforcing one another

Hi, Your garden wall that is on your side of the boundary line is classed as a party wall. The law states that you must inform your neighbours of any construction such as this before commencing work, so that a party wall agreement can be made between you both in writing. As your wall is a party wall it also means that they must also inform you of any new construction on the boundary, work to any existing walls on the boundary and work which involves digging near to property foundations. I assume that you did not inform them of your intention to rebuild the collapsed wall on your side of the boundary. This means that no current agreement exists and if a dispute came about you could (in the worst case) be forced to knock it down. My advice would be to firstly have an informal discussion about your disapproval of them just cutting/ joining onto your brand new wall. I would then agree that it will be okay for them to continue as long as if you can inspect the work yourself or employ someone to do so to ensure that a future collapse will be unlikely. You may at this point also consider mentioning a party wall agreement to future proof any defects discovered later on. I hope this advice is helpful for you. Kind Regards, Simon Ahern

Hi, firstly I am not sure exactly what you mean by h blocks. Are they the concrete blocks with the 2 square holes. Also are you talking about a dividing wall between yours and your neighbours? A retaining wall generally keeps back earth and a higher ground level behind the wall. Anyway, neighbours can be very inconsiderate at times. There are no written rules I don't think for this type of thing, generally it's down to like you say, communicating and agreeing. Personally, if I just had a independent wall built and the neighbours were getting theirs done later, I would expect them to ask or say something. Their footen may not be great and the fact that it's is then tied into yours may potentially lead to sinking on their side and then possibly pull on your wall. Sometimes neighbours don't mean to be funny they just don't think, they may have thought to just put the wall back like for like. Hope this helps.

If it comes on to your property/land they cannot do that without asking your permission first. I would personally say to take it down or have them to ask yourself if its okay to do it.

If you rebuilt your wall independent of theirs you must of stepped back the wall into your ground so they cannot join into your new wall as they would be taking part of your land . If you built it in the same place as the original wall was it’s not independent and your neighbour can join into it because it’s the same as it was .regards Martin