Secondary Dwelling DA Approved in Mortdale | Clause 4.6
November 4, 2026by Alex MachkevitchBlogDA ApprovalResidentialSecondary Dwelling
Project details
Services: Town Planning / Clause 4.6 Variation / Drafting / Project Management
Council: Georges River Council
Corona Projects has secured approval from Georges River Council for a new secondary dwelling in Mortdale. The approval adds to local housing supply by making use of an existing detached studio on the site, which will be reconfigured internally.
The clients approached Corona Projects wanting to put the studio on their property to better use as a secondary dwelling. The design responds to the site by retaining the established single storey built form at the rear of the site, keeping the visual impact on the streetscape and neighbouring properties to a minimum. The result sits comfortably within the surrounding residential area and maintains the amenity of adjoining properties.
The site presented a planning challenge in that its lot size fell below the minimum required for a detached secondary dwelling. Corona Projects prepared a Clause 4.6 variation request demonstrating that strict compliance was unreasonable and unnecessary in the circumstances, and that there were sufficient environmental planning grounds to justify the variation, particularly given the secondary dwelling would involve reuse of an existing structure on a single dwelling site located within a high density residential zone. Council supported the request and upheld the variation.
Contact Corona Projects
Noise was also a key consideration for the proposal, due to the sites location adjoining a railway corridor. Our team coordinated acoustic monitoring on site and engaged an acoustic consultant to prepare a report to accompany the application, demonstrating that the dwelling could achieve an appropriate level of amenity for future occupants. Corona Projects managed the application from start to finish, including the town planning documentation, drafting and coordination of consultants, which allowed Council to proceed with a quick approval of only 4 weeks between lodgement and determination, achieving a swift and positive outcome for the client, Council and the wider community.
Get a free consultation today to find out if your site can take a secondary dwelling
Contact Corona Projects
