We've been planning on moving for a while, and were about to put our place on the market, when the neighbours came round announcing they were planning on building a single storey extension. They then handed over a "pack" with a party wall notice and asked us to sign.
Having never been involved with party wall stuff on either side before, we said we'd look into it and get back to them within the required 14 days. We told them we were planning on moving.
We soon reached the conclusion following research that agreeing to it would lose us all rights over any damage etc. We also discovered that this DIY party wall notice they had put together themselves was most likely invalid; it was missing our names and address, and was almost certainly filing under the wrong section for what they wanted doing among other things. There was also a reasonable chance the notice wasn't even needed anyway, but the plans were too vague! None of this filled us with any confidence, meaning not signing and therefore getting a surveyor, as is our right, felt even more important.
We went back to them explaining our concerns over the validity of the notice, said we wouldn't sign and would be arranging a surveyor (who they were welcome to use too) to be met with "oh, I didn't realise it was going to cost this much"
End result is that they are apparently now going to wait until we've sold (we're on the market now) and get the new owners to sign instead, as they seem to believe that we're unusual by not immediately signing and that most people would without question. Maybe they do, who knows, but anyway, that's their problem, assuming they do stick with that plan.
My question is - do we need to reveal any of this on the property information form or to solicitors, or to buyers in any way? Our house isn't selling as fast as we had hoped in the current market (long story), and the last thing we want to do is to make it even harder. While we are pretty sure the notice was invalid, it was never proven so by anyone official, so does it still count for anything official/legal? For all we know, given they seem so disorganised and confused, they might never get around to building an extension and could quite possibly just sell up and get somewhere bigger anyway!
FWIW we first received it well over a month ago now, so all deadlines would have expired and we've heard nothing more from them since we told them we wouldn't be immediately agreeing to it on day 12, and that's when they told us they were going to wait until we'd sold. By them not doing anything more by this point, regardless of whether it actually was valid or not, does it automatically cancel/withdraw?
Thanks!