This stunning rooftop penthouse apartment, with superb views across Bingley, has some of the most up-to-date and sophisticated technology on the market.

Among other things, owner Rob Hind-Smith has installed individual heating and air conditioning throughout, along with CAT5 internet wiring, upgraded Sky HD wiring throughout and complimentary LED and mood lighting systems to many rooms.

Then of course there's the rooftop garden, which certainly has the wow' factor with its glass atrium with folding glass doors onto the terrace, where there is a stone flag floor with LED lighting and timber decked balcony in stainless steel and glass.

Here you will also find Rob's pride and joy - an eight-person hot tub with mood lighting and built-in sound system. While the tub is not part of the sale, it could be included at an extra cost.

Originally this was a commercial property where Rob had his amusement arcade business downstairs.

"It was a leasehold property and the landlord also owned the building next door," he says. "When the freehold of that property came up for sale I was in a quandary. I could either move everything next door and have the freehold, or buy both properties with a view to knocking through, if I could persuade the landlord.

"Fortunately we managed to come to an agreement and I decided to change the interior from front to back to going side to side, and then decided to redevelop the back part and the apartment above.

"Originally I was going to do this myself with the help of friends who had building experience, but after two years I decided not to and got down with paper and pencil and planned it all, then got an architect to draw it up properly."

The renovations took 18 months and Rob was wise enough not to live on site while all the work was being done.

He admits that he probably wasn't very popular while the work was going on because of numerous changes to the design. "I must have changed it ten or 12 times. I wanted it right and I wanted to know everything that was going into the fabric of the building.

"Every floor had to be taken out due to sound issues. These were old wooden floors and everything was done to new building regulations.

"When you went into the basement and you looked up it was like a cathedral up to the roof. The basement had to be dug up to get the right height in the basement apartment. Then there were issues with the foundations and new drains had to be put in. The contractor said that because it was an old building they had to address things as they came to them.

"We tried to keep as much of the character as we could; the original purlins are still in. I'm not sure exactly how old the building is but there are pictures in a cafe up the road which show how the main street used to look with horses and carts, and this was a cobblers; we found the original shelves for shoes in the basement.

"When all the work was finished we had three apartments and a double-fronted shop unit. I always intended to live in the penthouse because I'd lived there prior to the building work.

"If you gave someone the address and they pulled up outside, they'd think oh, no'. You have to go inside to appreciate just what is on offer."

The interior of the two-storey penthouse is an amazing space where no expense has been spared. An entrance hall with recessed stair lighting leads to an inner hall, off which are a laundry and airing facility along with a small loft storage area.

A glass wall - which for peace of mind is rated as fire-proof for an hour - overlooks the kitchen and dining area with a projection lighting system that has interchangeable graphic filters.

The huge, high-ceilinged open plan lounge with exposed wooden beams is divided into three zones - lounge, kitchen and dining areas. The kitchen area is raised, with cream units and black granite worktops, instant boiling water tap and built-in oven and hob with floating' extractor.

A feature of the dining area is the inset colour changing mood lighting which bathes the exposed stone wall. In this area there is also a cold water fridge with its own surface drainage and a glass wall to the lounge.

Elsewhere, there are floor-to-ceiling wardrobes with obscure glass in the master bedroom, a two-person spa bath with underwater lighting in the en-suite/house bathroom and a steam room with multi-tiered heated seating and shower tiles with deluge and body spray settings. There is also an en-suite to the second bedroom, which is another wet room with pressure shower.

On the second floor is a third bedroom or study - a cantilever mezzanine, with balcony overlooking the lounge.

The astonishing atrium, with a circular window and inset wall clock, is built of self-cleaning glass which can be opened fully out onto the rooftop terrace, where you will find the hot tub.

"The hot tub is my favourite space, as well as the steam room. I love being up here with the chimney pots all around," he says.

"The roof has been calculated to support four tons in any one position. The hot tub was craned in by a wagon with a telescopic arm. The cost of getting it in was the best £250 I've spent in a long while.

"We've had lots of parties, and the beauty of it is it's completely private, and because the sound is projected upwards by the walls, we don't disturb anyone. You can stand out on the balcony round the corner and you still can't hear it. I want to take the hot tub with me, but I might be persuaded to leave it."

Rob hasn't lived there very long with his partner, but circumstances mean that he needs to be nearer to his parents.

This property in Busfeild Street, Bingley, is on the market for £265,000 with Whitegates, Bingley, (01274) 551233.