Determined This application has been determined. Contact Mosman Municipal Council if you want to understand or challenge the decision. Some decisions can be appealed to the NSW Land and Environment Court, and who can appeal depends on the type of development.

Lodged 14 May 2026 On exhibition 9 June 2026 Under assessment Determined 21 July 2026

Status DEFERRED COMMENCEMENT

Overview

Address

9 Sirius Avenue Mosman 2088

Portal application no.

PAN-638142

Council reference

8.2026.65.1

Application type

Development Application

Development types

Dwelling house; Change of use of land or a building or the classification of a building under the Building Code of Australia

Estimated cost

$4,296,696

New dwellings

1

Storeys

3

Determination authority

Council staff under delegated authority

Key dates

Lodged

14 May 2026

Exhibition starts

9 June 2026

Exhibition ends

22 June 2026

Determined

21 July 2026

Source: NSW Planning Portal (opens in a new tab). The tracker searches by address, not by application number. Quote its portal number PAN-638142 or council reference 8.2026.65.1 when you contact Mosman Municipal Council.