The Block’s up market South Yarra apartments are set to go under the hammer later this month with listing agents claiming the lavish apartments are worth between $1.3 million and $1.5 million. Thousands of fans will finally get the opportunity to see the four trendy Darling Street apartments for themselves when Channel Nine opens the doors to the public over the weekend. Although the show’s producers are remaining tight lipped about the reserve prices, realtors have been running VIP showings since construction wrapped up to give genuine buyers a feel of the renovated homes before the hammer falls on April 28. Scroll down for video . The trendy South Yarra apartments have been valued between $ 1.3 million and $1.5 million by listing agents . After last year's bitter disappointment Darren and Dea are hoping they've created a sophisticated apartment that potential buyers will like . The controversial pair made a return for 'Triple Threat' after winning only $10,000 on the 'Glasshouse' auction day . Jellis Craig agent Andrew McCann is telling potential buyers to expect Darren and Deanne’s chic apartment to sell for around $1.5 on auction day, reported Domain. He said the couple’s upmarket wine cellar and generous terrace had parties excited to return for a second look. The controversial pair made a return for 'Triple Threat' after winning only $10,000 on the 'Glasshouse' auction day. Darren and Deanne blew the judges away with their classy master bedroom . The couple were always praised for their 'simple' and 'beautiful' styling which was featured throughout their breathtaking en suite . Although this was Josh and Charlotte's first crack at the renovation reality show 'The Block' they have become fan favourites after putting plenty of work into the renovation of 'Apartment 1' Josh and Charlotte produced a beautiful wine cellar for their luxe three bedroom apartment . Josh and Charlotte's apartment has garnered a lot of attention with 750 prospective buyers having already inspected the property . Since the apartments were listed on the market last week,  Josh and Charlotte's apartment garnered a lot of attention with 750 prospective buyers having already inspected the property. The agent taking care of Josh and Charlotte’s campaign, Hocking Stuart agent Mark Konishi, took 17 couples through the apartment on Easter Saturday and said the pair’s light-saturated apartment impressed buyers. Although the couple were disqualified from the Master bedroom reveal, despite a 'perfect score' from the judges, agents are confident the high ceilings and exposed beams will be a big draw card for buyers. Fresh and clean: Mr Konishi said buyers were impressed with the couples 'light filled' apartment . The Block's judges praised the couple for their 'thoughtful' styling and clean grey palate . Tim and Anastasia are confident that they will come out on top when the apartments go on sale next month . Tim and Anastasia's sophisticated apartment has been valued at around $1.3 million . Real estate agents said potential buyers were impressed with the property and thought it looked much better than on television . Tim and Anastasia’s apartment is being sold by Russell Cambridge and Doug Doyle of Biggin and Scott. Mr Cambridge said the property has been well received by potential buyers who think the property looks a lot better in person than on TV. Three contracts were issued after Mr Cambridge showed the property to over over 30 groups. He is telling prospective buyers the ‘sophisticated’ apartment will sell for upward of $1.3 million. After realtors showed around 30 groups through Tim and Anastasia's property, three contracts were issued. Ayden and Jess are facing stiff competition however their realtor valued the property at around $1.3 million, the same figure as Tim and Anastasia . When it goes under the hammer next month Ayden and Jess hope that the effort they put into their 'Scandanavian' apartment will be rewarded . Adam Joske from Gary Peer’s is running Ayden and Jess’s campaign and he said there has been a lot of interest coming from online buyers. The first time renovators on the Block won the very first room reveal of the season and  received positive reviews over the course of the program. Mr Joske told prospective buyers the 'Scandinavian' styled apartment will go sell around $1.3 million at auction. Judges think Ayden and Jess' bright apartment will appeal to a younger buyer . This was also Ayden and Jess' first shot at the Block with the judges giving the couple good reviews over the course of the series . All four apartments have been marketed without featuring the kitchen, stairs or terrace of the apartments as they haven’t been formally revealed on the reality series. This has given realtors ample opportunity to spark interest in the million dollar properties before auction date without disappointing dedicated fans who tune in each week for ‘room reveal’. Teams will be hoping to do better than The Block Glasshouse duos after three couples only pocketed between $10,000 and $40,000 for months of hard work and time away from their family. Contestants keep any money made over their reserves and the team that makes the most receives a $100,000 bonus. This season only registered bidders, buyers advocates and a small group of media will be present at the filmed auctions. The winners will remain a secret until the auctions are aired during the season finale. Channel Nine are opening the doors of 'The Block' apartments this weekend with around 40,000 fans expected to show up .
The Block’s four apartments are now on the market with the auction date set for April 28.
Listing agents say the apartments are worth between $1.3 million and $1.5 million.
Apartments will be open to the public on April 11-12, with thousands of people expected to turn up for a look.
Contestants keep any money made over their reserves and the team that makes the most receives a $100,000 bonus.
Agents have started showing potential buyers through the chic three-bedroom properties in trendy South Yarra.