Harrow councillors savaged plans to build more than 500 new homes on three London Underground station car parks in the borough.

Several members of the council’s major developments panel outright dismissed the proposals put forward by Transport for London (TfL) in collaboration with Catalyst housing association.

The project seeks to build 523 homes – all of which are said to be affordable – on the tube car parks in Canons Park, Rayners Lane and Stanmore.

But councillors – and those living close to the stations – criticised the design of the proposed buildings, as well as the loss of commuter parking and the issue of trying to implement car-free schemes.

Cllr Marilyn Ashton, who represents Stanmore Park, said she was “dumbfounded” by the design in her ward, which could include a housing block up to 11 storeys high.

She said: “The people of Stanmore are uniformly against this – they are really upset about it.

“You will not find a single person for it and I don’t think anything about any of these proposals reflects the local context.

“I think [TfL] are getting this very badly wrong and the people of Stanmore will never forgive them if it goes ahead; they will never get over it.”

Cllr Paul Osborn, leader of Harrow Conservatives, accused the team behind the project of ignoring the concerns of the panel after they met earlier in the year.

“If anything, this is more depressing than the presentation in July. It’s incredibly upsetting that things seem to have got worse,” he said.

“They are fundamentally different from the surrounding areas and this would represent a fundamental change to the borough of Harrow.”

And Cllr Stephen Greek said it was unrealistic to expect people living in Harrow not to use cars.

He criticised what he sees as a double-negative impact on the areas around the station – the removal of car-parking spaces and no provision for new resident cars.

“People are open to a reasonable scheme that isn’t an overdevelopment or takes away too much parking. This goes much, much further than that,” he said.

On the other side of the chamber, Labour councillor Varsha Parmar, responsible for the environment at Harrow Council, said she was “totally against all the proposals”.

She likened their design to a “prison block” and said it would have an irreparable impact on those living nearby.

The schemes are scheduled to be put before Harrow Council’s planning committee early next year.