The City of Ballarat has now issued more than 6000 defect notices seeking financial compensation for inspection of claims of shoddy workmanship undertaken by NBN contractors. 

More than 4500 notices were issued by mid-May and councillor Vicki Coltman says the trend of continual damage to Ballarat's streets has extended to private property.

"From a regional point of view, it's not the same level as the work being done in Melbourne," Cr Coltman said.

"The contractors that we're getting don't necessarily have the high skill levels.

"It's not NBN as such, it's the sub contractors."

City of Ballarat general manager of city infrastructure Eric Braslis said council has so far received $90,000 in compensation from NBN. 

"This is a direct result of damages caused due to the operation within the municipality and Council will continually undertake cost recovery until NBN completes the project," Mr Braslis said.

Notable instances of major damage include the unauthorised removal of a fully grown tree in Barkly Street, multiple instances of damage to the surface of Ripon Street and serious damage to at least one water main.

Mr Braslis confirmed those three incidents had cost council $136,000, which covered routine inspections, the appointment of a dedicated officer and the rectification of sub-standard work, including, road rectification and reinstatement, footpath reinstatement, replacement, removal and investigation of damage to trees and nature strip rectification and clay removal.

Other major incidents include $15,000 worth in damages to a section of the newly widened Long Hills Road, as well as damage to another large tree in Mansfield Avenue.

Cr Coltman said she will be writing to communications minister Malcolm Turnbull to rectify the ongoing issues.

"We will be writing to Malcolm Turnball," she said.

"It's really disappointing that I spoke to ministers in Canberra and we've seen no interest at all.

"We've had the guys from NBN come down a number of times, but another 12 months down the track and nothing has changed."

However, NBN spokesperson Michael Moore said Ballarat's NBN rollout is well advanced in comparison to the rest of the state.

"Connection of Ballarat to fast broadband through the nbn network is well advanced compared to many of Australia's regional cities and the rest of Victoria," Mr Moore said.

"NBN and its delivery partners work closely with the Ballarat City Council to address any issues and concerns about the quality and impact of the construction program, as well as supporting the council to regularly inspect work.

"Importantly, our delivery partner Transfield Services has dedicated substantial resources to resolving all outstanding defect notices by August this year."