Recently separated. DH is staying in the house we were living in and I've moved to a property we owned and were renting out for our pension pot.
I had not seen the property for quite some time but was aware it would need a spruce up following years of renters coming and going. I'm not bothered about the condition or the work as I'm happy to have a place of my own and start afresh.
My problem is the neighboiurs have built a single story lean to extension which joins on to the wall of my house. I had no idea this was being built and I hate it. The house is detached but now has this lean to stuck on the side.
When I saw neightbour I brought up the subject and they said DH had given permission for them to attach it to our wall. I messaged DH and he said yes he thinks he problably did say go ahead as we didn't live there he didn't think it mattered.
Further digging and it turns out it was put up approx 6 months ago, no planning permission as size was within permitted development, and no 3rd party wall agreement.
Is there anything I can do ?