Clarence councillors will decide on Monday whether to approve a Rose Bay development that would see a 1950s home demolished and replaced with two two-storey dwellings.
The proposal for 72 Esplanade has drawn opposition from neighbours, with six formal objections lodged with Clarence City Council.
Concerns raised include the height and scale of the design, impacts on privacy, overshadowing, street and neighbourhood character and an increase in traffic.
Council documents show residents believe the buildings would be too tall and bulky, blocking winter sunlight from their living areas.
Privacy was also a sticking point, with representors arguing the upper decks would overlook backyards and leave little room for seclusion.

The plans detail two three-bedroom homes with open-plan living, three bathrooms each and decks facing the Derwent River.
Five off-street parking spaces are also included in the design.
Residents have flagged traffic and amenity issues, warning more cars on the Esplanade would make parking harder and the road busier.
Others argued the new dwellings would obstruct water views and alter the character of the neighbourhood.
Despite the objections, council planning officers have recommended approval, finding the proposal complies with all planning requirements.

“The proposed development is assessed as being consistent in scale and proportion with the applicable General Residential Zoning of the site because the proposal complies with the relevant acceptable solutions,” their report stated.
The application will be considered by councillors at Monday’s meeting.