Sometimes what appears to be a relatively straightforward renovation project turns up a few challenges that slow up or even stop the completion of a property makeover.
But with this property in Bargoed, Rhymney Valley that featured on BBC's Homes Under The Hammer it was a human based challenge that slowed up progress, an unresolved disagreement.
It meant that when the programme's production team returned to film the renovation project transformation two years after the first visit, the property still wasn't finished.
Maybe the indication that it was a property destined to have more headaches than expected was revealed with presenter Martin Roberts had trouble even finding a way in when he visited.
He's banging on the shutters on the main street because there's no door, but no-one is answering. Most people would be banging on the shutters to get out of a dentist, not making a scene trying to get in.
But a locked shutter and no-one at home never stops this intrepid property explorer, and a rummage around the back of the building reveals a door that Martin can open and get into view the property going to auction.
But maybe he doesn't want to because he soon realises that this property was once, and very recently, a working dentist surgery.
There's a reception desk, kitchen and rooms still occupied by dentist paraphernalia, not what you want to encounter if you have a fear of dentists.
Martin holds it together until he wanders into a room that still has the dentist chair in the centre - gulp. He quickly extracts himself from the situation.
But the property has intrigued him - a commercial unit that could continue as such or be divided into a business unit and a residential unit on the first floor, if planning allows.
The building itself seemed to be in good condition, no fillings needed, as it went to auction for a tasty guide price of £35,000.
Martin was very amused by the admission by auction buyer Douglas that he absolutely hates dentists and yet he now owns a dentist surgery, but Douglas could block out the past and visualise what he wanted to do to the property for the future.
Douglas, an aircraft software engineer, snapped up the building for £38,000 as a home for himself and his partner Rachel, with the view of updating the commercial unit into a retail space.
The plan was to take about a year to reconfigure the upstairs and the entrance to the flat, separating the two floors into residential and retail and Douglas was looking forward to the adventure.
It sounded like a straightforward procedure, as long as planning was in place, but when the show returned after over two years the whole project was not finished.
There were changes to see, including a new rear entrance to the ground floor and the creation of the living accommodation on the first floor.
This new rear entrance for the flat was a smart move by Douglas as he didn't want to eat into the retail unit space by creating a front entrance to the flat and so using up some of that valuable rentable floorspace.
So there's a metal staircase and a platform vestibule now added to the back of the building as the entrance to the flat plus a perfect place to enjoy a morning brew overlooking the mountains.
There's a smart new kitchen where the commercial kitchen once stood, in a ground floor room next to the entrance.
The stairs have been turned to flow seamlessly from the new entrance at the back of the building and straight up and into the open-plan lounge.
Where once people visited, many in fear, for fillings, crowns and extractions, Douglas has worked hard to create a comfortable living area, off which can be found two double bedrooms and a generous bathroom.
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But the ground floor is a different scenario - instead of a rentable retail or business unit there's a pile of Douglas' stuff and building materials.
He says: "The main problem we've had with the build is that we required a special acoustic insulating ceiling between the shop beneath and the flat up here.
"Unfortunately it wasn't constructed properly and that means it has to be torn down and replaced, and we're currently negotiating how that is going to be funded.
"We intend to keep living here and rent out the shop when circumstances allow us to."
Douglas was hopeful that the issue with the ceiling could be resolved within the next four months and the renovation of the retail unit could be completed and start generating some income.
But overall, has he made or lost money on this valleys project?
Douglas says the final budget spend on the renovation was £45,000 so far, with maybe a further £5k-10k to spend once the ceiling issue was resolved and the ground floor was brought up to a rentable standard.
But the issue with the ceiling seems to have been going on for a long time, with no work on the building happening for the past year.
The agent revisits the property to inspect the work that has been done. She says renting the whole building out could earn Douglas a yield of between 12-14% and, depending on how he sold the units, as one property or separately, the agent thinks he could make between £12k-£22k profit.
But Douglas is staying put, this flat is now his home.
But that unused retail unit is surely giving Douglas some nagging pain over the lost income from not being able to rent it out?
The returning agent thinks that the retail unit once completed could earn Douglas about £400 per calendar month.
And a quick look at Google maps for the address shows that in June 2021 there was still no progress on the renovation of the retail unit, making this surely the longest ever trip to the dentist.
This story appeared in series 24, episode 76 which is currently available to view on BBC iPlayer.
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