Wow, this got interesting after I left yesterday..! lol
Still looks like envy to me.
As somebody said before, not all disabilities are obvious, so try and be positive as you can that there is a fiddle going on. - Don't just waste taxpayers money on a fraud investigation that was on whim/jealousy/no evidence/hearsay/etc...
Again, just because you, (JFish and his wife) paid 45k for his extention, doesn't mean everyone would. My uncle is a builder, he's do the work for me at cost, but obviously the time scale would be to suit his needs, it'd still cost a lot less than your 45k though...
It's also pefectly possibly to have got the money from a 3rd party to fund the extention. Or had a grant, or part grant/part self and/or external fund, cover the cost of the work.
People talk shit all the time, (look around
ffs) just because your neighbour says "things" doesn't mean he did, or intends to do these things. I've got a cousin who talks the biggest pile of shit, but people fall for it, and believe what he says. Madness!
It's the blokes wife I'm worried for, if she's genuninely disabled, it's her you'll be hurting the most. She can't help it if her old man is gobby, big mouth twat...
Get your evidence, be sure as you can, then report him if you really must, but don't hide behind your PC screen, saying he's this, that, and the other, when you don't actually know anything of the sort...
Mozr, do you do the lottery mate...?