There are some Welsh houses going to auction on BBC's Homes Under The Hammer's that surprise and even worry presenter Martin Roberts.
Some have surprising features that even he can't fathom or dangerous additions that he is definitely not a fan of - and it is very entertaining that he never hides his emotions.
Whilst visiting a three-bed, ramshackle terrace in Rhondda Cynon Taf Martin came across a number of issues and puzzling things that made him especially demonstrative.
READ MORE: Homes Under The Hammer's Martin Roberts has bought an old Welsh farmhouse and transformed it
There was a front door that didn't fit as a starting point but it got much, much worse at this rundown house in Trealaw near Tonypandy.
Between the hall and the reception room he finds a glass wall and Martin is not impressed. He says: "Really not sure what's going on with this glass dividing wall - really, so dangerous.
"I haven't talked about this for a while actually but if you've got glass like this, unless it's safety glass, in your property especially if it's one you're doing up it really needs to be replaced by stuff that is safety glass.
"Because if you fall into that and you cut yourself and there have been fatal accidents with people falling into exactly that, so it's something that definitely needs to be sorted."
A feature that could kill you - not a great start to the property tour then.
The open-plan ground floor living space has the original two reception rooms knocked together.
It is a big plus for Martin until he sees one of the added features that is a minus, even though he's not sure what it actually is.
A bar? A breakfast table? It has to go, whatever it is, he demands.
But there's more things that "have to go" waiting for Martin in the kitchen at the rear of the house - the single storey space was a complete mess.
Exposed pipes, damp and battered units assaulted the eyes on the inside but only the true horror of this area of the house was evident when Martin went outside and looked back at the property.
He says: "Ah! It all starts to go a bit haywire when you step out towards the rear of the property here.
"The kitchen is in a right old state. Looks like you've got damp on the floor, the most bizarre set of pipework - it really lets the house down. And as I suspected, it's a fairly ramshackle construction, you can see it's even got a tin roof."
Help with your hunt for a home here:
But Martin is an optimistic soul too and he's overjoyed to see the sweeping views of the valleys from the garden, as well as finding three really good sized bedrooms on the first floor and a sizeable bathroom too.
Martin's overall verdict? It needed a full renovation project but it was also "a house that keeps on giving".
But it might have been giving the new owner Simon, who bought it at auction for £62,750, regular nightmares as he bought it unseen - a very big Homes Under The Hammer sin.
Simon seemed a little stunned at the state of the house when he visited for the first time.
He says: "Today is the first time I've seen it in person and it definitely appears worse than it did online.
"There's a lot I didn't realise - so upstairs the doors are incorrectly sized doors they need to be changed, we've got flooring that's not quite level that I didn't notice.
"The extension out the back, although I knew I was going to replace it anyway, that's in a much worse state than I originally thought."
So, there's much to do and only a budget of £25,000 and timescale of six to eight months. Ten months later and is it a case of now a beauty or still a beast?
Martin is bowled-over at the transformation Simon and Rebecca and their team have achieved, dragging the house from stinker to stunner full of modern interiors. He says, "Wow! What a difference!"
Some clever reconfiguration of the space has created extra rooms that are surely going to add value, such as a new entrance to the kitchen freeing up space for a utility room and an ensuite shower room for the master bedroom by stealing some space from the larger bathroom next door.
Simon and Rebecca and family and friends have done a lot of work on the property, as well as specialist contractors for the electrics, the plumbing and the roofing.
Plus the couple employed a builder for all the internal walls and doors, plastering and general building tasks, with the family then mucking in to do all the decorating and constructing the outside decking.
And what of the rickety rear extension? Simon was unbelievably able to keep it and bring it back to life.
He says: "The extension was actually structurally sound - we didn't think it was at first but we had it all checked out.
"And so all that had to be done was a new roof went on and had all new windows and doors put into it and the outside was then rendered and it's completely transformed it."
The couple went over budget and ended up spending about £35,000, which Simon attributes to adding in the extra shower room that they weren't originally going to do.
Plus there was replastering throughout and "lots of unexpected things that cropped up during the renovation".
The property was valued between £125,000 and £135,000 meaning a profit before tax and expenses of up to £37,250 but Simon is going to rent it out and has already achieved a rent of £750 per calendar month, resulting in yield of 9.2%.
And Martin can't contain his feelings on this one - he says: "It's a fantastic transformation both inside and out, it looks amazing."
This story can be seen as part of series 25, episode five currently available to view on BBC iPlayer.
Never miss the best property, renovation and interiors stories, sign up for the Amazing Welsh Homes Property Newsletter here.
