A block in the heritage-registered Reid housing precinct has been put on the market after the approval of plans that neighbours say do not meet heritage requirements.
The Reid Residents' Association raised concerns about the plans for the site, which authorities said had been amended to better reflect the heritage status of the precinct.
The association told the Sunday Canberra Times that the roof pitch for the planned house did not fit the area and full-height windows were out of character.
Heritage architect Eric Martin proposed changes to the facade that would have brought the house into line with neighbouring properties.
The plans were approved through a certification process, which the president of the association, Marianne Albury-Colless, described as "nonsense".
"The process hasn't worked at all to bring about a really good outcome," she said at the time.
The ex-Mr Fluffy block at 23 Dirrawan Gardens is listed at $1.599 million. It sold in February 2018 for $1.4 million.
An advertisement said the block was an "ultra-rare opportunity" with approved plans that met the heritage guidelines.
The listing said the plans were "designed to encapsulate the heritage and charm of the surrounding area".
Residents are hoping the sale will lead to a better design outcome and new plans for the prime inner-north block.