My neighbour is more than a little eccentric.
He has lived there for at least 25 years, but no one in the otherwise friendly street knows much about him, including other people who have lived their for 20+ years.
When the previous owner of my house had the knocked the 2 reception rooms into one, he thought that was a good idea so did the same. With a sledge hammer, on his own. My previous owner only realised when the floors started to slope. He hadn't made any attempt to prop up the load bearing wall and had fucked the houses either side of him.
He couldn't afford to repair it, so the council had to come in and do the remedial work, and put a charge on the house to recover their costs if he ever sells. He was SO incensed by them doing this that he then removed the stair case, and moved into the upstairs of the house, using a ladder to get up and down, and pulling it up with him at night, apparently to stop the council getting in.
He has windows open ALL year round, including the very coldest winter nights. And when he is out. I think the only reason the house hasn't been burgled or squatted is because you can obviously see the occupant is a borderline hoarder.
And he doesn't believe in recycling, so shouts at the binmen when they do the quarterly drop of recycling bags. I don't think I've ever seen a bag of rubbish outside his house on bin day, so god knows what he does with it.
He is also not a big fan of gardening, so once a year, he sprays weed killer over absolutely everything, and then leaves the dead plants in the garden for the rest of the year. Then more weeds grow to chest height and he does it again.