Video: Inside £1.5m bungalow - Scotland’s priciest

The single-storey home covers an area the size of two singles tennis courts and experts say they have never seen anything like it.

Sitting in five acres of grounds, and just 16 miles from Edinburgh, it even comes with a separate staff annex.

The luxurious interior includes a shoe rack inspired by the Christian Louboutin boutique in Paris and a dressing room with a “central dressing console”.

The property in Haddington, East Lothian, has been developed by the McMillan family who have previously broken records for the most expensive house and the most expensive flat sold in Scotland.

Anna Gardiner from Savills, the agency selling the property, said: “I’ve never seen anything like this on this price scale.”

She added: “Bungalows have a bit of a bad name, it has modest connotations.

“This is a contradiction.”

Asked if she had ever seen a more expensive bungalow for sale north of the border, she replied: “I can’t think of any others.”

The brochure for the bungalow states: “The dressing room is quite exceptional and has fully fitted, hand crafted furniture including a central dressing console and extensive wardrobe space and shoe racks inspired by the Christian Louboutin boutique in Paris.

“The en suite bathroom is spacious and has a round spa bath, limestone walls and floor, a plasma screen television, double shower cubicle, bidet, WC and two basins with cabinets above and drawers below.

“The master bedroom itself has a French door leading into the garden, a four poster bed, and bespoke, hand crafted, fitted furniture.”

The property also includes a triple garage and stables.

Alan Fraser, an Edinburgh-based investment property agent, described it as “phenomenal”.

He said: “The sellers are due enormous credit for developing the property and the site to a level rarely seen.

“To take a small holding bungalow and have the vision to create such a cutting edge family home is truly impressive.”

Mr Fraser continued: “It really is great to see a property push all the conventional boundaries and when you add the location, equestrian possibilities, annexe and guest accommodation I think you have a home that may break price records.”

The McMillan family includes Mary, who takes the led on the developments, and her husband David, a Edinburgh property dealer and their children Porsche, Mercedes and Velvet.

In 2007 they sold Seton Castle for £5m plus an undisclosed sum for the upmarket contents after having purchased it for £1.3m.

At the time it was the highest price paid for any house in Scotland.

While in 2010 it is believed they also broke the record for the country’s most expensive apartment.

Whittingehame House, also in East Lothian, sold eight months after going on the market for £2.5m. It had been purchased by the the McMillan’s for £832,000 three years earlier.

The flat comprised of the state rooms at the neoclassical mansion built in 1817 for the wealthy Balfour family and had played host to guests included King Edward VII, Winston Churchill.