NSW Premier Gladys Berejiklian says she is confident in the state's building regulations system amid concerns Sydney's Mascot Towers may be sinking.

Key points: The engineers' report states there has been "downward movement" in the 10-storey building

The engineers' report states there has been "downward movement" in the 10-storey building Premier Gladys Berejiklian said every state government in the country was "struggling" with building regulations

Premier Gladys Berejiklian said every state government in the country was "struggling" with building regulations The building's owners' corporation said any interpretation Mascot Towers is sinking was "alarmist"

A new engineers' report, provided to the building's owners' corporation yesterday afternoon, said it appeared the block was "moving in a downward motion" and urged owners and tenants to remove all their possessions.

The block's 132 units were evacuated 11 days ago and authorities continue to work to determine the cause of cracks in the building.

Ms Berejiklian labelled the new findings "concerning" but said it was a nation-wide problem.

"This isn't a situation that is isolated to NSW," Ms Berejiklian said.

"Every state government is struggling to make sure we have a comprehensive system which ensures everyone who is accountable during the process of construction is held to the highest standards.

"We are confident in the system."

Fabiano Dos Santos shows off a sign made by angry Mascot Towers residents. ( ABC News: Liv Casben )

The Premier would not rule out increasing the Government's $3 million accommodation relief loan announced on Sunday if required.

Residents said they feared the worst after the new report.

"It's very, very concerning, and they [are] asking the owners and tenants to start to remove everything from the units there, so we didn't expect that at all," unit owner Fabiano Dos Santos said.

"The first interpretation is that the building is sinking."

The Owners Corporation later released a statement clarifying the new report.

"There has been some differential settlement resulting in the currently observed building movements, at least in part," the statement read.

"But any interpretation of the building sinking at present is considered to be alarmist."

At a general meeting last week owners voted to pay for a $1 million "special levy" to fund urgent repairs.

Another meeting has been organised for this Thursday.