An octagonal-shaped apartment from season 11 of The Block has hit the market.

Buyers have a chance to snap up a slice of The Block with a South Yarra apartment from the hit television show on the market.

The octagonal-shaped pad from season 11 occupies the ground floor and was the challenge apartment transformed by all the 2015 contestants.

The three-bedroom apartment at 1/1A Affleck St wasn’t auctioned as part of the show, instead offloaded by Channel 9 within three weeks of the series finale for $1.67 million, according to CoreLogic data.

The property has since been rented out at a rate between $1600-$1800 per week.

It’s now for sale with a $1.7-$1.87 million price tag and will head under the hammer on December 20.

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The three-bedroom apartment at 1/1A Affleck St, South Yarra has a $1.7-$1.87 million price tag.

It last sold a few weeks after the season 11 finale for $1.67 million.

Hocking Stuart South Yarra director Mark Konishi said the vendor, a doctor based in Queensland, purchased the property in an off-market deal after missing out on a property from season 10 of The Block at Darling St, South Yarra.

“This was the challenge apartment where all the competitors complete two of the rooms,” Mr Konishi said.

“He (the vendor) has kept it as an investment which was attractive because of the depreciation and rental return, but is now ready to let it go.”

City views are on offer.

The property has been an investment, reaping between $1600-$1800 per week.

Mr Konishi said he hoped to seal a deal before Christmas, with the property’s history hopefully a helping hand.

“It’s a boutique block of six and it has got fantastic facilities — a rooftop garden, theatre room and barbecue area — which are an extension of the apartment on offer to whoever buys the property.”

He said so far interest had been from genuine buyers, not fans of the show.

It will head under the hammer on December 20.

The apartment block was once a seedy 34-room property, Hotel Saville, which was purchased for $7.3 million by the reno show in 2014.

The hotel has a murky past and was well-known as the scene of a sex attack by a self-proclaimed vampire gigolo.

The season 11 winners, Dean and Shay Paine from New South Wales, bagged $755,000 after their level 5 apartment sold for $2.3 million under the hammer.

The Block’s next venture is the makeover of a seedy St Kilda hostel, the Oslo Hotel, which they are set to transform into five mansions.

Experts have tipped the terraces will fetch in excess of $3 million once The Block is done with them.

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