Greenhills Beach residents claim Sutherland Shire Council has been slow and ineffective in dealing with a new home construction not complying with what was proposed in the development application.
The council has issued two stop work orders on the construction at 34 Peregrine Drive.
However, some internal work was allowed to continue while section 96 applications for retrospective approval of modifications to development consent rere considered.
One MA (modification application) was rejected in October last year and a second was submitted in January this year.
The house is being built in the elevated Shearwater Landing estate, where views over Woolooware Bay are highly valued.
Submissions by other residents to the second MA say, as a result of changes to the roof and other elements, the building will be significantly higher than what was approved, impacting on the views and privacy of neighbours.
The council was accused of acting only after being contacted by residents, and allowing building work to continue despite stop work orders being imposed.
One submission criticised "the lack of monitoring and policing" by council and the private certifier.
Another said, "We now know that council do not have the necessary resources to police every development and once the building was approved it is up to the certifying authority to police the build".
A council spokeswoman said the property was "currently subject to a stop work order after it was brought to council's attention that building works on the site were not proceeding consistent with the approval given to construct a new home".
"The owner has since applied to modify the approval and the current application has been neighbour notified and is under assessment," she said.