The owner, mother of three Kristina Clements, spent about $30,000 on renovations after she bought the property two years ago.
Ms Clements replaced carpets and fittings, repainted, and refurbished a bathroom.
A few doors down, No 80, which was sold at auction in 2012 for $805,000, is now valued at $1.25 million - a 55.3 per cent rise.
The house is occupied by five flatmates. It came third in the TV show, but is now worth more than the winning house at No 78, which recently sold for $1.1 million.
In Belmont, homes from the 2013 season of the popular reality television series have not increased as dramatically, with the new CV of the winning house at 1c Eversleigh Rd being $1000 less than its 2013 purchase price of $1.126 million.
The house was put on the market only six months after it was sold and has been bought for $1.2 million, but is currently unoccupied.
Though CVs for the current season's properties in Pt Chevalier have increased dramatically, the two original sections at 26 and 28 Newell St are yet to be subdivided.
The properties' valuations of more than $1.5 million are up more than 70 per cent from their 2011 CVs.
No 26 Newell St, on which Ben and Quinn's and Maree and James' houses sit, is valued at $1.52 million, up from $880,000 in 2011.
At 28 Newell St, where Alex and Corban and Jo and Damo are vying for the title of The Block 2014 winners, the property is now worth $1.54 million - a 71 per cent increase on its 2011 CV of $900,000.
Houses on the two properties were originally pre-war bungalows, parts of which were incorporated into each of the four Block houses.
Tomorrow, the four Pt Chevalier houses will be auctioned live on TV3.
Each team will keep the profit above reserve from the sale of their house on the night, while the team whose house sells for the most above reserve will be named champions and win an additional $80,000.
The valuations were released by the council on Monday and huge public demand has crashed its website. The council has hired more call centre staff and has warned that the site could fail again.
The same frenzy shut down the Quotable Value website.
The council yesterday advised people to phone its call centre on 0508 000 021 if they could not find their property value online.