I'm not being unreasonable here... a little gobsmacked to be honest
My NDN is lovely and i never ever hear from him (which is perfect for me im very antisocial) and he needed an extension for a bedroom on ground floor level.
I'm not easily bothered by much and a few weeks of building commotion was fine by me. Didn't get off to a great start when they started dropping the entire existing concrete patio from 1st floor height (with a digger) at 7:30am on a sunday (to break it up and take it away)! Right outside autistic DS's bedroom... the whole house repeatedly shook like an earthquake we were terrified and had zero warning.
Lovely relative of lovely neighbour came over and profusely apologised after i complained to the builders and let the council know. Everything was great.
Builders then wanted to remove half of my fence and have the building there as a barrier instead. Fair enough i thought, worse things have happened and he's always been a good neighbour. So i asked "just please make sure my dog still has free roaming in the garden as he would normally and you can do that". Cue me letting the DDog out one morning to find he'd escaped onto the main road as they had left a huge hole (and broke some of the remaining fence) 
I go out next time i see them to ask politely that they just stick some wood there or something so i can still use my garden. "Yeah sure ok whatever" they say in the most "i cant be bothered with you go away" tone i've ever heard 
But now I hope to god my photo uploads to this thread of what they have done. Not only have they taken up my garden way past my kitchen window with the scaffolding, but they've used MY DRAIN to build the scaffolding in.
Meaning my kitchen water (sink, washing machine, you name it) is all just soaking onto my concrete and grass. My drain pipe was already cracked when someone tried to break in but was still in place, now it's snapped off completely and the drain is full of concrete blocks. I put a bucket there to catch some of the water and they've moved the bucket and put scaffolding there too. They've moved my BBQ etc and other things out the way so they can put scaffolding further and further into my garden. (Luckily old items i'm not very precious about as they've put them where all the water is going).
Just can't believe it.... Here goes my photo attempts...