Residents from a block of Aberdeen council flats are in the process of being relocated due to concerns the building vibrates.
Tenants began moving into the flats on the site of the former Marchburn School in April 2012.
Aberdeen City Council said it had launched an investigation into the issue and is in the process of relocating all the residents living there.
The properties were some of the first council homes built for families in the city in 30 years.
But residents in one of the blocks have since complained the building constantly vibrates.
It is claimed this can be exacerbated by passing cars, helicopters or a car running.
But it is said it can also be made worse by children kicking balls off the building or a resident putting on a washing machine.
Aberdeen City Council started moving out residents in April and have since relocated people from four of the block’s six flats.
Mum-of-two Natalie Davidson moved into the development with her two daughters Carly, 9, and Abbie, 3, four years ago.
The 26-year-old claimed the local authority sent in a structural engineer in July who said the building was not fit for purpose.
She said: “In November they put out a vibration meter. It was almost at dangerous levels.”
She added: “It constantly vibrates.”
Natalie and her neighbour Sharon Munro, 43, who lives with son Ronan Craig, 17, have both been to the doctor with symptoms they say are caused by the vibrations including nausea, joint pain, anxiety and headaches.
An Aberdeen City Council spokeswoman said: “We were made aware of concerns about vibrations in the building from tenants in a block of flats at Marchburn Park.
“In order to carry out a full investigation, we have begun relocating the residents of the six properties into alternative suitable accommodation.
“Tenants were offered a choice of a permanent home elsewhere or temporary accommodation until the concerns were addressed and four properties accepted their first offer.
“In the remaining cases, offers of alternative accommodation and settlement packages were offered to both tenants over the last number of months and we have now reached an agreement for relocation.
“Council officers are now carrying out agreed enhancements to the properties before the tenants move in.
“Until thorough investigations have been completed, we cannot speculate as to whether the issue is a fault with the construction or has been caused by other factors.”