Posting a series of snaps on Reddit, the fan said they posted the photos to give others a glimpse into the layout of the houses in Gisborne, about 50km northwest of Melbourne.
"I could not get my head around it," they wrote.
They pointed out the homes were situated quite close together and lacked privacy.
"Most other big houses in the area seem to have very bushy blocks with a preference towards a heritage style. I could see the appeal of the houses on the hill in terms of the view and the privacy of houses 1 and 2.
"Going past you could really see the factors beyond the contestants' control that made selling all these houses really difficult."
Of the five houses on the season, two failed to sell when they were put up for auction.
While Omar and Oz managed to sell their home for a record-breaking $5,666,666.66, it was the first time in 11 years two teams failed to sell their properties.
Jenny and Ryan were yet to sell their home as of Wednesday morning.
Commenting on the photos shared to Reddit, other fans said the lack of privacy was an issue, with the mix of heritage homes with modern extensions also jarring for potential buyers.
"It will take a lot of trees and about 10 years before these places hide the shed and get their privacy," one commented.
"They look ridiculous, strapping a modern black cube to the side of a heritage home is just weird," another pointed out.
"God the old and new is jarring, no architectural linkages at all. How they are $4m plus is crazy," a third added.
"No wonder no one wanted to buy them," somebody else commented.
In The Block auction, Rachel and Ryan sold their home for $4,249,000.85, while Tom and Sarah-Jane walked away with just $20,000 profit.
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